diff options
88 files changed, 1136 insertions, 379 deletions
diff --git a/Documentation/devicetree/bindings/iommu/xen,grant-dma.yaml b/Documentation/devicetree/bindings/iommu/xen,grant-dma.yaml new file mode 100644 index 000000000000..be1539d234f9 --- /dev/null +++ b/Documentation/devicetree/bindings/iommu/xen,grant-dma.yaml @@ -0,0 +1,39 @@ +# SPDX-License-Identifier: (GPL-2.0-only or BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/iommu/xen,grant-dma.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Xen specific IOMMU for virtualized devices (e.g. virtio) + +maintainers: + - Stefano Stabellini <[email protected]> + +description: + The Xen IOMMU represents the Xen grant table interface. Grant mappings + are to be used with devices connected to the Xen IOMMU using the "iommus" + property, which also specifies the ID of the backend domain. + The binding is required to restrict memory access using Xen grant mappings. + +properties: + compatible: + const: xen,grant-dma + + '#iommu-cells': + const: 1 + description: + The single cell is the domid (domain ID) of the domain where the backend + is running. + +required: + - compatible + - "#iommu-cells" + +additionalProperties: false + +examples: + - | + iommu { + compatible = "xen,grant-dma"; + #iommu-cells = <1>; + }; diff --git a/Documentation/filesystems/netfs_library.rst b/Documentation/filesystems/netfs_library.rst index a80a59941d2f..3276c3d55142 100644 --- a/Documentation/filesystems/netfs_library.rst +++ b/Documentation/filesystems/netfs_library.rst @@ -37,30 +37,31 @@ The network filesystem helper library needs a place to store a bit of state for its use on each netfs inode it is helping to manage. To this end, a context structure is defined:: - struct netfs_i_context { + struct netfs_inode { + struct inode inode; const struct netfs_request_ops *ops; - struct fscache_cookie *cache; + struct fscache_cookie *cache; }; -A network filesystem that wants to use netfs lib must place one of these -directly after the VFS ``struct inode`` it allocates, usually as part of its -own struct. This can be done in a way similar to the following:: +A network filesystem that wants to use netfs lib must place one of these in its +inode wrapper struct instead of the VFS ``struct inode``. This can be done in +a way similar to the following:: struct my_inode { - struct { - /* These must be contiguous */ - struct inode vfs_inode; - struct netfs_i_context netfs_ctx; - }; + struct netfs_inode netfs; /* Netfslib context and vfs inode */ ... }; -This allows netfslib to find its state by simple offset from the inode pointer, -thereby allowing the netfslib helper functions to be pointed to directly by the -VFS/VM operation tables. +This allows netfslib to find its state by using ``container_of()`` from the +inode pointer, thereby allowing the netfslib helper functions to be pointed to +directly by the VFS/VM operation tables. The structure contains the following fields: + * ``inode`` + + The VFS inode structure. + * ``ops`` The set of operations provided by the network filesystem to netfslib. @@ -78,14 +79,12 @@ To help deal with the per-inode context, a number helper functions are provided. Firstly, a function to perform basic initialisation on a context and set the operations table pointer:: - void netfs_i_context_init(struct inode *inode, - const struct netfs_request_ops *ops); + void netfs_inode_init(struct inode *inode, + const struct netfs_request_ops *ops); -then two functions to cast between the VFS inode structure and the netfs -context:: +then a function to cast from the VFS inode structure to the netfs context:: - struct netfs_i_context *netfs_i_context(struct inode *inode); - struct inode *netfs_inode(struct netfs_i_context *ctx); + struct netfs_inode *netfs_node(struct inode *inode); and finally, a function to get the cache cookie pointer from the context attached to an inode (or NULL if fscache is disabled):: diff --git a/MAINTAINERS b/MAINTAINERS index 39e78f58b0aa..de8350706c5d 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -15830,6 +15830,14 @@ S: Maintained F: Documentation/devicetree/bindings/iio/chemical/plantower,pms7003.yaml F: drivers/iio/chemical/pms7003.c +PLATFORM FEATURE INFRASTRUCTURE +M: Juergen Gross <[email protected]> +S: Maintained +F: arch/*/include/asm/platform-feature.h +F: include/asm-generic/platform-feature.h +F: include/linux/platform-feature.h +F: kernel/platform-feature.c + PLDMFW LIBRARY M: Jacob Keller <[email protected]> S: Maintained diff --git a/arch/arm/include/asm/xen/xen-ops.h b/arch/arm/include/asm/xen/xen-ops.h new file mode 100644 index 000000000000..7ebb7eb0bd93 --- /dev/null +++ b/arch/arm/include/asm/xen/xen-ops.h @@ -0,0 +1,2 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#include <xen/arm/xen-ops.h> diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c index 82ffac621854..059cce018570 100644 --- a/arch/arm/mm/dma-mapping.c +++ b/arch/arm/mm/dma-mapping.c @@ -33,7 +33,7 @@ #include <asm/dma-iommu.h> #include <asm/mach/map.h> #include <asm/system_info.h> -#include <xen/swiotlb-xen.h> +#include <asm/xen/xen-ops.h> #include "dma.h" #include "mm.h" @@ -2287,10 +2287,7 @@ void arch_setup_dma_ops(struct device *dev, u64 dma_base, u64 size, set_dma_ops(dev, dma_ops); -#ifdef CONFIG_XEN - if (xen_initial_domain()) - dev->dma_ops = &xen_swiotlb_dma_ops; -#endif + xen_setup_dma_ops(dev); dev->archdata.dma_ops_setup = true; } diff --git a/arch/arm/xen/enlighten.c b/arch/arm/xen/enlighten.c index 07eb69f9e7df..1f9c3ba32833 100644 --- a/arch/arm/xen/enlighten.c +++ b/arch/arm/xen/enlighten.c @@ -443,6 +443,8 @@ static int __init xen_guest_init(void) if (!xen_domain()) return 0; + xen_set_restricted_virtio_memory_access(); + if (!acpi_disabled) xen_acpi_guest_init(); else diff --git a/arch/arm64/include/asm/xen/xen-ops.h b/arch/arm64/include/asm/xen/xen-ops.h new file mode 100644 index 000000000000..7ebb7eb0bd93 --- /dev/null +++ b/arch/arm64/include/asm/xen/xen-ops.h @@ -0,0 +1,2 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#include <xen/arm/xen-ops.h> diff --git a/arch/arm64/mm/dma-mapping.c b/arch/arm64/mm/dma-mapping.c index 6719f9efea09..6099c81b9322 100644 --- a/arch/arm64/mm/dma-mapping.c +++ b/arch/arm64/mm/dma-mapping.c @@ -9,9 +9,9 @@ #include <linux/dma-map-ops.h> #include <linux/dma-iommu.h> #include <xen/xen.h> -#include <xen/swiotlb-xen.h> #include <asm/cacheflush.h> +#include <asm/xen/xen-ops.h> void arch_sync_dma_for_device(phys_addr_t paddr, size_t size, enum dma_data_direction dir) @@ -52,8 +52,5 @@ void arch_setup_dma_ops(struct device *dev, u64 dma_base, u64 size, if (iommu) iommu_setup_dma_ops(dev, dma_base, dma_base + size - 1); -#ifdef CONFIG_XEN - if (xen_swiotlb_detect()) - dev->dma_ops = &xen_swiotlb_dma_ops; -#endif + xen_setup_dma_ops(dev); } diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig index be68c1f02b79..c2ce2e60c8f0 100644 --- a/arch/powerpc/Kconfig +++ b/arch/powerpc/Kconfig @@ -223,7 +223,6 @@ config PPC select HAVE_HARDLOCKUP_DETECTOR_PERF if PERF_EVENTS && HAVE_PERF_EVENTS_NMI && !HAVE_HARDLOCKUP_DETECTOR_ARCH select HAVE_HW_BREAKPOINT if PERF_EVENTS && (PPC_BOOK3S || PPC_8xx) select HAVE_IOREMAP_PROT - select HAVE_IRQ_EXIT_ON_IRQ_STACK select HAVE_IRQ_TIME_ACCOUNTING select HAVE_KERNEL_GZIP select HAVE_KERNEL_LZMA if DEFAULT_UIMAGE @@ -786,7 +785,6 @@ config THREAD_SHIFT range 13 15 default "15" if PPC_256K_PAGES default "14" if PPC64 - default "14" if KASAN default "13" help Used to define the stack size. The default is almost always what you diff --git a/arch/powerpc/include/asm/thread_info.h b/arch/powerpc/include/asm/thread_info.h index 125328d1b980..af58f1ed3952 100644 --- a/arch/powerpc/include/asm/thread_info.h +++ b/arch/powerpc/include/asm/thread_info.h @@ -14,10 +14,16 @@ #ifdef __KERNEL__ -#if defined(CONFIG_VMAP_STACK) && CONFIG_THREAD_SHIFT < PAGE_SHIFT +#ifdef CONFIG_KASAN +#define MIN_THREAD_SHIFT (CONFIG_THREAD_SHIFT + 1) +#else +#define MIN_THREAD_SHIFT CONFIG_THREAD_SHIFT +#endif + +#if defined(CONFIG_VMAP_STACK) && MIN_THREAD_SHIFT < PAGE_SHIFT #define THREAD_SHIFT PAGE_SHIFT #else -#define THREAD_SHIFT CONFIG_THREAD_SHIFT +#define THREAD_SHIFT MIN_THREAD_SHIFT #endif #define THREAD_SIZE (1 << THREAD_SHIFT) diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile index 2e2a2a9bcf43..f91f0f29a566 100644 --- a/arch/powerpc/kernel/Makefile +++ b/arch/powerpc/kernel/Makefile @@ -37,6 +37,8 @@ KASAN_SANITIZE_paca.o := n KASAN_SANITIZE_setup_64.o := n KASAN_SANITIZE_mce.o := n KASAN_SANITIZE_mce_power.o := n +KASAN_SANITIZE_udbg.o := n +KASAN_SANITIZE_udbg_16550.o := n # we have to be particularly careful in ppc64 to exclude code that # runs with translations off, as we cannot access the shadow with diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c index b62046bf3bb8..ee0433809621 100644 --- a/arch/powerpc/kernel/process.c +++ b/arch/powerpc/kernel/process.c @@ -2158,12 +2158,12 @@ static unsigned long ___get_wchan(struct task_struct *p) return 0; do { - sp = *(unsigned long *)sp; + sp = READ_ONCE_NOCHECK(*(unsigned long *)sp); if (!validate_sp(sp, p, STACK_FRAME_OVERHEAD) || task_is_running(p)) return 0; if (count > 0) { - ip = ((unsigned long *)sp)[STACK_FRAME_LR_SAVE]; + ip = READ_ONCE_NOCHECK(((unsigned long *)sp)[STACK_FRAME_LR_SAVE]); if (!in_sched_functions(ip)) return ip; } diff --git a/arch/powerpc/kernel/ptrace/ptrace-fpu.c b/arch/powerpc/kernel/ptrace/ptrace-fpu.c index 5dca19361316..09c49632bfe5 100644 --- a/arch/powerpc/kernel/ptrace/ptrace-fpu.c +++ b/arch/powerpc/kernel/ptrace/ptrace-fpu.c @@ -17,9 +17,13 @@ int ptrace_get_fpr(struct task_struct *child, int index, unsigned long *data) #ifdef CONFIG_PPC_FPU_REGS flush_fp_to_thread(child); - if (fpidx < (PT_FPSCR - PT_FPR0)) - memcpy(data, &child->thread.TS_FPR(fpidx), sizeof(long)); - else + if (fpidx < (PT_FPSCR - PT_FPR0)) { + if (IS_ENABLED(CONFIG_PPC32)) + // On 32-bit the index we are passed refers to 32-bit words + *data = ((u32 *)child->thread.fp_state.fpr)[fpidx]; + else + memcpy(data, &child->thread.TS_FPR(fpidx), sizeof(long)); + } else *data = child->thread.fp_state.fpscr; #else *data = 0; @@ -39,9 +43,13 @@ int ptrace_put_fpr(struct task_struct *child, int index, unsigned long data) #ifdef CONFIG_PPC_FPU_REGS flush_fp_to_thread(child); - if (fpidx < (PT_FPSCR - PT_FPR0)) - memcpy(&child->thread.TS_FPR(fpidx), &data, sizeof(long)); - else + if (fpidx < (PT_FPSCR - PT_FPR0)) { + if (IS_ENABLED(CONFIG_PPC32)) + // On 32-bit the index we are passed refers to 32-bit words + ((u32 *)child->thread.fp_state.fpr)[fpidx] = data; + else + memcpy(&child->thread.TS_FPR(fpidx), &data, sizeof(long)); + } else child->thread.fp_state.fpscr = data; #endif diff --git a/arch/powerpc/kernel/ptrace/ptrace.c b/arch/powerpc/kernel/ptrace/ptrace.c index 4d2dc22d4a2d..5d7a72b41ae7 100644 --- a/arch/powerpc/kernel/ptrace/ptrace.c +++ b/arch/powerpc/kernel/ptrace/ptrace.c @@ -444,4 +444,7 @@ void __init pt_regs_check(void) * real registers. */ BUILD_BUG_ON(PT_DSCR < sizeof(struct user_pt_regs) / sizeof(unsigned long)); + + // ptrace_get/put_fpr() rely on PPC32 and VSX being incompatible + BUILD_BUG_ON(IS_ENABLED(CONFIG_PPC32) && IS_ENABLED(CONFIG_VSX)); } diff --git a/arch/powerpc/kernel/rtas.c b/arch/powerpc/kernel/rtas.c index 9bb43aa53d43..a6fce3106e02 100644 --- a/arch/powerpc/kernel/rtas.c +++ b/arch/powerpc/kernel/rtas.c @@ -993,8 +993,8 @@ int rtas_call_reentrant(int token, int nargs, int nret, int *outputs, ...) * * Return: A pointer to the specified errorlog or NULL if not found. */ -struct pseries_errorlog *get_pseries_errorlog(struct rtas_error_log *log, - uint16_t section_id) +noinstr struct pseries_errorlog *get_pseries_errorlog(struct rtas_error_log *log, + uint16_t section_id) { struct rtas_ext_event_log_v6 *ext_log = (struct rtas_ext_event_log_v6 *)log->buffer; diff --git a/arch/powerpc/kexec/crash.c b/arch/powerpc/kexec/crash.c index d85fa9fc6f3c..80f54723cf6d 100644 --- a/arch/powerpc/kexec/crash.c +++ b/arch/powerpc/kexec/crash.c @@ -224,7 +224,7 @@ void crash_kexec_secondary(struct pt_regs *regs) /* wait for all the CPUs to hit real mode but timeout if they don't come in */ #if defined(CONFIG_SMP) && defined(CONFIG_PPC64) -static void __maybe_unused crash_kexec_wait_realmode(int cpu) +noinstr static void __maybe_unused crash_kexec_wait_realmode(int cpu) { unsigned int msecs; int i; diff --git a/arch/powerpc/mm/nohash/kaslr_booke.c b/arch/powerpc/mm/nohash/kaslr_booke.c index 1f3f9fedf1bc..0d04f9d5da8d 100644 --- a/arch/powerpc/mm/nohash/kaslr_booke.c +++ b/arch/powerpc/mm/nohash/kaslr_booke.c @@ -19,7 +19,6 @@ #include <asm/cacheflush.h> #include <asm/kdump.h> #include <mm/mmu_decl.h> -#include <generated/compile.h> #include <generated/utsrelease.h> struct regions { @@ -37,10 +36,6 @@ struct regions { int reserved_mem_size_cells; }; -/* Simplified build-specific string for starting entropy. */ -static const char build_str[] = UTS_RELEASE " (" LINUX_COMPILE_BY "@" - LINUX_COMPILE_HOST ") (" LINUX_COMPILER ") " UTS_VERSION; - struct regions __initdata regions; static __init void kaslr_get_cmdline(void *fdt) @@ -71,7 +66,8 @@ static unsigned long __init get_boot_seed(void *fdt) { unsigned long hash = 0; - hash = rotate_xor(hash, build_str, sizeof(build_str)); + /* build-specific string for starting entropy. */ + hash = rotate_xor(hash, linux_banner, strlen(linux_banner)); hash = rotate_xor(hash, fdt, fdt_totalsize(fdt)); return hash; diff --git a/arch/powerpc/platforms/powernv/Makefile b/arch/powerpc/platforms/powernv/Makefile index 6488b3842199..19f0fc5c6f1b 100644 --- a/arch/powerpc/platforms/powernv/Makefile +++ b/arch/powerpc/platforms/powernv/Makefile @@ -4,6 +4,7 @@ # in particular, idle code runs a bunch of things in real mode KASAN_SANITIZE_idle.o := n KASAN_SANITIZE_pci-ioda.o := n +KASAN_SANITIZE_pci-ioda-tce.o := n # pnv_machine_check_early KASAN_SANITIZE_setup.o := n diff --git a/arch/powerpc/platforms/pseries/papr_scm.c b/arch/powerpc/platforms/pseries/papr_scm.c index 181b855b3050..82cae08976bc 100644 --- a/arch/powerpc/platforms/pseries/papr_scm.c +++ b/arch/powerpc/platforms/pseries/papr_scm.c @@ -465,6 +465,9 @@ static int papr_scm_pmu_check_events(struct papr_scm_priv *p, struct nvdimm_pmu u32 available_events; int index, rc = 0; + if (!p->stat_buffer_len) + return -ENOENT; + available_events = (p->stat_buffer_len - sizeof(struct papr_scm_perf_stats)) / sizeof(struct papr_scm_perf_stat); if (available_events == 0) diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig index 5126a5db41fd..91c0b80a8bf0 100644 --- a/arch/s390/Kconfig +++ b/arch/s390/Kconfig @@ -769,7 +769,6 @@ menu "Virtualization" config PROTECTED_VIRTUALIZATION_GUEST def_bool n prompt "Protected virtualization guest support" - select ARCH_HAS_RESTRICTED_VIRTIO_MEMORY_ACCESS help Select this option, if you want to be able to run this kernel as a protected virtualization KVM guest. diff --git a/arch/s390/mm/init.c b/arch/s390/mm/init.c index 6fb6bf64326f..6a0ac00d5a42 100644 --- a/arch/s390/mm/init.c +++ b/arch/s390/mm/init.c @@ -31,6 +31,7 @@ #include <linux/cma.h> #include <linux/gfp.h> #include <linux/dma-direct.h> +#include <linux/platform-feature.h> #include <asm/processor.h> #include <linux/uaccess.h> #include <asm/pgalloc.h> @@ -168,22 +169,14 @@ bool force_dma_unencrypted(struct device *dev) return is_prot_virt_guest(); } -#ifdef CONFIG_ARCH_HAS_RESTRICTED_VIRTIO_MEMORY_ACCESS - -int arch_has_restricted_virtio_memory_access(void) -{ - return is_prot_virt_guest(); -} -EXPORT_SYMBOL(arch_has_restricted_virtio_memory_access); - -#endif - /* protected virtualization */ static void pv_init(void) { if (!is_prot_virt_guest()) return; + platform_set(PLATFORM_VIRTIO_RESTRICTED_MEM_ACCESS); + /* make sure bounce buffers are shared */ swiotlb_init(true, SWIOTLB_FORCE | SWIOTLB_VERBOSE); swiotlb_update_mem_attributes(); diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 9783ebc4e021..be0b95e51df6 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -1542,7 +1542,6 @@ config X86_CPA_STATISTICS config X86_MEM_ENCRYPT select ARCH_HAS_FORCE_DMA_UNENCRYPTED select DYNAMIC_PHYSICAL_MASK - select ARCH_HAS_RESTRICTED_VIRTIO_MEMORY_ACCESS def_bool n config AMD_MEM_ENCRYPT diff --git a/arch/x86/mm/mem_encrypt.c b/arch/x86/mm/mem_encrypt.c index 11350e2fd736..9f27e14e185f 100644 --- a/arch/x86/mm/mem_encrypt.c +++ b/arch/x86/mm/mem_encrypt.c @@ -12,7 +12,6 @@ #include <linux/swiotlb.h> #include <linux/cc_platform.h> #include <linux/mem_encrypt.h> -#include <linux/virtio_config.h> /* Override for DMA direct allocation check - ARCH_HAS_FORCE_DMA_UNENCRYPTED */ bool force_dma_unencrypted(struct device *dev) @@ -87,9 +86,3 @@ void __init mem_encrypt_init(void) print_mem_encrypt_feature_info(); } - -int arch_has_restricted_virtio_memory_access(void) -{ - return cc_platform_has(CC_ATTR_GUEST_MEM_ENCRYPT); -} -EXPORT_SYMBOL_GPL(arch_has_restricted_virtio_memory_access); diff --git a/arch/x86/mm/mem_encrypt_amd.c b/arch/x86/mm/mem_encrypt_amd.c index e8f7953fda83..f6d038e2cd8e 100644 --- a/arch/x86/mm/mem_encrypt_amd.c +++ b/arch/x86/mm/mem_encrypt_amd.c @@ -21,6 +21,7 @@ #include <linux/dma-mapping.h> #include <linux/virtio_config.h> #include <linux/cc_platform.h> +#include <linux/platform-feature.h> #include <asm/tlbflush.h> #include <asm/fixmap.h> @@ -242,6 +243,9 @@ void __init sev_setup_arch(void) size = total_mem * 6 / 100; size = clamp_val(size, IO_TLB_DEFAULT_SIZE, SZ_1G); swiotlb_adjust_size(size); + + /* Set restricted memory access for virtio. */ + platform_set(PLATFORM_VIRTIO_RESTRICTED_MEM_ACCESS); } static unsigned long pg_level_to_pfn(int level, pte_t *kpte, pgprot_t *ret_prot) diff --git a/arch/x86/xen/enlighten_hvm.c b/arch/x86/xen/enlighten_hvm.c index 517a9d8d8f94..8b71b1dd7639 100644 --- a/arch/x86/xen/enlighten_hvm.c +++ b/arch/x86/xen/enlighten_hvm.c @@ -195,6 +195,8 @@ static void __init xen_hvm_guest_init(void) if (xen_pv_domain()) return; + xen_set_restricted_virtio_memory_access(); + init_hvm_pv_info(); reserve_shared_info(); diff --git a/arch/x86/xen/enlighten_pv.c b/arch/x86/xen/enlighten_pv.c index f33a4421e7cd..e3297b15701c 100644 --- a/arch/x86/xen/enlighten_pv.c +++ b/arch/x86/xen/enlighten_pv.c @@ -109,6 +109,8 @@ static DEFINE_PER_CPU(struct tls_descs, shadow_tls_desc); static void __init xen_pv_init_platform(void) { + xen_set_restricted_virtio_memory_access(); + populate_extra_pte(fix_to_virt(FIX_PARAVIRT_BOOTMAP)); set_fixmap(FIX_PARAVIRT_BOOTMAP, xen_start_info->shared_info); diff --git a/drivers/platform/mips/Kconfig b/drivers/platform/mips/Kconfig index d421e1482395..6b51ad01f791 100644 --- a/drivers/platform/mips/Kconfig +++ b/drivers/platform/mips/Kconfig @@ -17,7 +17,7 @@ menuconfig MIPS_PLATFORM_DEVICES if MIPS_PLATFORM_DEVICES config CPU_HWMON - tristate "Loongson-3 CPU HWMon Driver" + bool "Loongson-3 CPU HWMon Driver" depends on MACH_LOONGSON64 select HWMON default y diff --git a/drivers/virtio/Kconfig b/drivers/virtio/Kconfig index b5adf6abd241..a6dc8b5846fe 100644 --- a/drivers/virtio/Kconfig +++ b/drivers/virtio/Kconfig @@ -6,12 +6,6 @@ config VIRTIO bus, such as CONFIG_VIRTIO_PCI, CONFIG_VIRTIO_MMIO, CONFIG_RPMSG or CONFIG_S390_GUEST. -config ARCH_HAS_RESTRICTED_VIRTIO_MEMORY_ACCESS - bool - help - This option is selected if the architecture may need to enforce - VIRTIO_F_ACCESS_PLATFORM - config VIRTIO_PCI_LIB tristate help diff --git a/drivers/virtio/virtio.c b/drivers/virtio/virtio.c index ef04a96942bf..6bace84ae37e 100644 --- a/drivers/virtio/virtio.c +++ b/drivers/virtio/virtio.c @@ -5,6 +5,7 @@ #include <linux/module.h> #include <linux/idr.h> #include <linux/of.h> +#include <linux/platform-feature.h> #include <uapi/linux/virtio_ids.h> /* Unique numbering for virtio devices. */ @@ -170,12 +171,10 @@ EXPORT_SYMBOL_GPL(virtio_add_status); static int virtio_features_ok(struct virtio_device *dev) { unsigned int status; - int ret; might_sleep(); - ret = arch_has_restricted_virtio_memory_access(); - if (ret) { + if (platform_has(PLATFORM_VIRTIO_RESTRICTED_MEM_ACCESS)) { if (!virtio_has_feature(dev, VIRTIO_F_VERSION_1)) { dev_warn(&dev->dev, "device must provide VIRTIO_F_VERSION_1\n"); diff --git a/drivers/xen/Kconfig b/drivers/xen/Kconfig index 120d32f164ac..bfd5f4f706bc 100644 --- a/drivers/xen/Kconfig +++ b/drivers/xen/Kconfig @@ -335,4 +335,24 @@ config XEN_UNPOPULATED_ALLOC having to balloon out RAM regions in order to obtain physical memory space to create such mappings. +config XEN_GRANT_DMA_IOMMU + bool + select IOMMU_API + +config XEN_GRANT_DMA_OPS + bool + select DMA_OPS + +config XEN_VIRTIO + bool "Xen virtio support" + depends on VIRTIO + select XEN_GRANT_DMA_OPS + select XEN_GRANT_DMA_IOMMU if OF + help + Enable virtio support for running as Xen guest. Depending on the + guest type this will require special support on the backend side + (qemu or kernel, depending on the virtio device types used). + + If in doubt, say n. + endmenu diff --git a/drivers/xen/Makefile b/drivers/xen/Makefile index 5aae66e638a7..c0503f1c7d5b 100644 --- a/drivers/xen/Makefile +++ b/drivers/xen/Makefile @@ -39,3 +39,5 @@ xen-gntalloc-y := gntalloc.o xen-privcmd-y := privcmd.o privcmd-buf.o obj-$(CONFIG_XEN_FRONT_PGDIR_SHBUF) += xen-front-pgdir-shbuf.o obj-$(CONFIG_XEN_UNPOPULATED_ALLOC) += unpopulated-alloc.o +obj-$(CONFIG_XEN_GRANT_DMA_OPS) += grant-dma-ops.o +obj-$(CONFIG_XEN_GRANT_DMA_IOMMU) += grant-dma-iommu.o diff --git a/drivers/xen/grant-dma-iommu.c b/drivers/xen/grant-dma-iommu.c new file mode 100644 index 000000000000..16b8bc0c0b33 --- /dev/null +++ b/drivers/xen/grant-dma-iommu.c @@ -0,0 +1,78 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Stub IOMMU driver which does nothing. + * The main purpose of it being present is to reuse generic IOMMU device tree + * bindings by Xen grant DMA-mapping layer. + * + * Copyright (C) 2022 EPAM Systems Inc. + */ + +#include <linux/iommu.h> +#include <linux/of.h> +#include <linux/platform_device.h> + +struct grant_dma_iommu_device { + struct device *dev; + struct iommu_device iommu; +}; + +/* Nothing is really needed here */ +static const struct iommu_ops grant_dma_iommu_ops; + +static const struct of_device_id grant_dma_iommu_of_match[] = { + { .compatible = "xen,grant-dma" }, + { }, +}; + +static int grant_dma_iommu_probe(struct platform_device *pdev) +{ + struct grant_dma_iommu_device *mmu; + int ret; + + mmu = devm_kzalloc(&pdev->dev, sizeof(*mmu), GFP_KERNEL); + if (!mmu) + return -ENOMEM; + + mmu->dev = &pdev->dev; + + ret = iommu_device_register(&mmu->iommu, &grant_dma_iommu_ops, &pdev->dev); + if (ret) + return ret; + + platform_set_drvdata(pdev, mmu); + + return 0; +} + +static int grant_dma_iommu_remove(struct platform_device *pdev) +{ + struct grant_dma_iommu_device *mmu = platform_get_drvdata(pdev); + + platform_set_drvdata(pdev, NULL); + iommu_device_unregister(&mmu->iommu); + + return 0; +} + +static struct platform_driver grant_dma_iommu_driver = { + .driver = { + .name = "grant-dma-iommu", + .of_match_table = grant_dma_iommu_of_match, + }, + .probe = grant_dma_iommu_probe, + .remove = grant_dma_iommu_remove, +}; + +static int __init grant_dma_iommu_init(void) +{ + struct device_node *iommu_np; + + iommu_np = of_find_matching_node(NULL, grant_dma_iommu_of_match); + if (!iommu_np) + return 0; + + of_node_put(iommu_np); + + return platform_driver_register(&grant_dma_iommu_driver); +} +subsys_initcall(grant_dma_iommu_init); diff --git a/drivers/xen/grant-dma-ops.c b/drivers/xen/grant-dma-ops.c new file mode 100644 index 000000000000..fc0142484001 --- /dev/null +++ b/drivers/xen/grant-dma-ops.c @@ -0,0 +1,346 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Xen grant DMA-mapping layer - contains special DMA-mapping routines + * for providing grant references as DMA addresses to be used by frontends + * (e.g. virtio) in Xen guests + * + * Copyright (c) 2021, Juergen Gross <[email protected]> + */ + +#include <linux/module.h> +#include <linux/dma-map-ops.h> +#include <linux/of.h> +#include <linux/pfn.h> +#include <linux/xarray.h> +#include <xen/xen.h> +#include <xen/xen-ops.h> +#include <xen/grant_table.h> + +struct xen_grant_dma_data { + /* The ID of backend domain */ + domid_t backend_domid; + /* Is device behaving sane? */ + bool broken; +}; + +static DEFINE_XARRAY(xen_grant_dma_devices); + +#define XEN_GRANT_DMA_ADDR_OFF (1ULL << 63) + +static inline dma_addr_t grant_to_dma(grant_ref_t grant) +{ + return XEN_GRANT_DMA_ADDR_OFF | ((dma_addr_t)grant << PAGE_SHIFT); +} + +static inline grant_ref_t dma_to_grant(dma_addr_t dma) +{ + return (grant_ref_t)((dma & ~XEN_GRANT_DMA_ADDR_OFF) >> PAGE_SHIFT); +} + +static struct xen_grant_dma_data *find_xen_grant_dma_data(struct device *dev) +{ + struct xen_grant_dma_data *data; + + xa_lock(&xen_grant_dma_devices); + data = xa_load(&xen_grant_dma_devices, (unsigned long)dev); + xa_unlock(&xen_grant_dma_devices); + + return data; +} + +/* + * DMA ops for Xen frontends (e.g. virtio). + * + * Used to act as a kind of software IOMMU for Xen guests by using grants as + * DMA addresses. + * Such a DMA address is formed by using the grant reference as a frame + * number and setting the highest address bit (this bit is for the backend + * to be able to distinguish it from e.g. a mmio address). + */ +static void *xen_grant_dma_alloc(struct device *dev, size_t size, + dma_addr_t *dma_handle, gfp_t gfp, + unsigned long attrs) +{ + struct xen_grant_dma_data *data; + unsigned int i, n_pages = PFN_UP(size); + unsigned long pfn; + grant_ref_t grant; + void *ret; + + data = find_xen_grant_dma_data(dev); + if (!data) + return NULL; + + if (unlikely(data->broken)) + return NULL; + + ret = alloc_pages_exact(n_pages * PAGE_SIZE, gfp); + if (!ret) + return NULL; + + pfn = virt_to_pfn(ret); + + if (gnttab_alloc_grant_reference_seq(n_pages, &grant)) { + free_pages_exact(ret, n_pages * PAGE_SIZE); + return NULL; + } + + for (i = 0; i < n_pages; i++) { + gnttab_grant_foreign_access_ref(grant + i, data->backend_domid, + pfn_to_gfn(pfn + i), 0); + } + + *dma_handle = grant_to_dma(grant); + + return ret; +} + +static void xen_grant_dma_free(struct device *dev, size_t size, void *vaddr, + dma_addr_t dma_handle, unsigned long attrs) +{ + struct xen_grant_dma_data *data; + unsigned int i, n_pages = PFN_UP(size); + grant_ref_t grant; + + data = find_xen_grant_dma_data(dev); + if (!data) + return; + + if (unlikely(data->broken)) + return; + + grant = dma_to_grant(dma_handle); + + for (i = 0; i < n_pages; i++) { + if (unlikely(!gnttab_end_foreign_access_ref(grant + i))) { + dev_alert(dev, "Grant still in use by backend domain, disabled for further use\n"); + data->broken = true; + return; + } + } + + gnttab_free_grant_reference_seq(grant, n_pages); + + free_pages_exact(vaddr, n_pages * PAGE_SIZE); +} + +static struct page *xen_grant_dma_alloc_pages(struct device *dev, size_t size, + dma_addr_t *dma_handle, + enum dma_data_direction dir, + gfp_t gfp) +{ + void *vaddr; + + vaddr = xen_grant_dma_alloc(dev, size, dma_handle, gfp, 0); + if (!vaddr) + return NULL; + + return virt_to_page(vaddr); +} + +static void xen_grant_dma_free_pages(struct device *dev, size_t size, + struct page *vaddr, dma_addr_t dma_handle, + enum dma_data_direction dir) +{ + xen_grant_dma_free(dev, size, page_to_virt(vaddr), dma_handle, 0); +} + +static dma_addr_t xen_grant_dma_map_page(struct device *dev, struct page *page, + unsigned long offset, size_t size, + enum dma_data_direction dir, + unsigned long attrs) +{ + struct xen_grant_dma_data *data; + unsigned int i, n_pages = PFN_UP(size); + grant_ref_t grant; + dma_addr_t dma_handle; + + if (WARN_ON(dir == DMA_NONE)) + return DMA_MAPPING_ERROR; + + data = find_xen_grant_dma_data(dev); + if (!data) + return DMA_MAPPING_ERROR; + + if (unlikely(data->broken)) + return DMA_MAPPING_ERROR; + + if (gnttab_alloc_grant_reference_seq(n_pages, &grant)) + return DMA_MAPPING_ERROR; + + for (i = 0; i < n_pages; i++) { + gnttab_grant_foreign_access_ref(grant + i, data->backend_domid, + xen_page_to_gfn(page) + i, dir == DMA_TO_DEVICE); + } + + dma_handle = grant_to_dma(grant) + offset; + + return dma_handle; +} + +static void xen_grant_dma_unmap_page(struct device *dev, dma_addr_t dma_handle, + size_t size, enum dma_data_direction dir, + unsigned long attrs) +{ + struct xen_grant_dma_data *data; + unsigned int i, n_pages = PFN_UP(size); + grant_ref_t grant; + + if (WARN_ON(dir == DMA_NONE)) + return; + + data = find_xen_grant_dma_data(dev); + if (!data) + return; + + if (unlikely(data->broken)) + return; + + grant = dma_to_grant(dma_handle); + + for (i = 0; i < n_pages; i++) { + if (unlikely(!gnttab_end_foreign_access_ref(grant + i))) { + dev_alert(dev, "Grant still in use by backend domain, disabled for further use\n"); + data->broken = true; + return; + } + } + + gnttab_free_grant_reference_seq(grant, n_pages); +} + +static void xen_grant_dma_unmap_sg(struct device *dev, struct scatterlist *sg, + int nents, enum dma_data_direction dir, + unsigned long attrs) +{ + struct scatterlist *s; + unsigned int i; + + if (WARN_ON(dir == DMA_NONE)) + return; + + for_each_sg(sg, s, nents, i) + xen_grant_dma_unmap_page(dev, s->dma_address, sg_dma_len(s), dir, + attrs); +} + +static int xen_grant_dma_map_sg(struct device *dev, struct scatterlist *sg, + int nents, enum dma_data_direction dir, + unsigned long attrs) +{ + struct scatterlist *s; + unsigned int i; + + if (WARN_ON(dir == DMA_NONE)) + return -EINVAL; + + for_each_sg(sg, s, nents, i) { + s->dma_address = xen_grant_dma_map_page(dev, sg_page(s), s->offset, + s->length, dir, attrs); + if (s->dma_address == DMA_MAPPING_ERROR) + goto out; + + sg_dma_len(s) = s->length; + } + + return nents; + +out: + xen_grant_dma_unmap_sg(dev, sg, i, dir, attrs | DMA_ATTR_SKIP_CPU_SYNC); + sg_dma_len(sg) = 0; + + return -EIO; +} + +static int xen_grant_dma_supported(struct device *dev, u64 mask) +{ + return mask == DMA_BIT_MASK(64); +} + +static const struct dma_map_ops xen_grant_dma_ops = { + .alloc = xen_grant_dma_alloc, + .free = xen_grant_dma_free, + .alloc_pages = xen_grant_dma_alloc_pages, + .free_pages = xen_grant_dma_free_pages, + .mmap = dma_common_mmap, + .get_sgtable = dma_common_get_sgtable, + .map_page = xen_grant_dma_map_page, + .unmap_page = xen_grant_dma_unmap_page, + .map_sg = xen_grant_dma_map_sg, + .unmap_sg = xen_grant_dma_unmap_sg, + .dma_supported = xen_grant_dma_supported, +}; + +bool xen_is_grant_dma_device(struct device *dev) +{ + struct device_node *iommu_np; + bool has_iommu; + + /* XXX Handle only DT devices for now */ + if (!dev->of_node) + return false; + + iommu_np = of_parse_phandle(dev->of_node, "iommus", 0); + has_iommu = iommu_np && of_device_is_compatible(iommu_np, "xen,grant-dma"); + of_node_put(iommu_np); + + return has_iommu; +} + +void xen_grant_setup_dma_ops(struct device *dev) +{ + struct xen_grant_dma_data *data; + struct of_phandle_args iommu_spec; + + data = find_xen_grant_dma_data(dev); + if (data) { + dev_err(dev, "Xen grant DMA data is already created\n"); + return; + } + + /* XXX ACPI device unsupported for now */ + if (!dev->of_node) + goto err; + + if (of_parse_phandle_with_args(dev->of_node, "iommus", "#iommu-cells", + 0, &iommu_spec)) { + dev_err(dev, "Cannot parse iommus property\n"); + goto err; + } + + if (!of_device_is_compatible(iommu_spec.np, "xen,grant-dma") || + iommu_spec.args_count != 1) { + dev_err(dev, "Incompatible IOMMU node\n"); + of_node_put(iommu_spec.np); + goto err; + } + + of_node_put(iommu_spec.np); + + data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL); + if (!data) + goto err; + + /* + * The endpoint ID here means the ID of the domain where the corresponding + * backend is running + */ + data->backend_domid = iommu_spec.args[0]; + + if (xa_err(xa_store(&xen_grant_dma_devices, (unsigned long)dev, data, + GFP_KERNEL))) { + dev_err(dev, "Cannot store Xen grant DMA data\n"); + goto err; + } + + dev->dma_ops = &xen_grant_dma_ops; + + return; + +err: + dev_err(dev, "Cannot set up Xen grant DMA ops, retain platform DMA ops\n"); +} + +MODULE_DESCRIPTION("Xen grant DMA-mapping layer"); +MODULE_AUTHOR("Juergen Gross <[email protected]>"); +MODULE_LICENSE("GPL"); diff --git a/drivers/xen/grant-table.c b/drivers/xen/grant-table.c index 7a18292540bc..738029de3c67 100644 --- a/drivers/xen/grant-table.c +++ b/drivers/xen/grant-table.c @@ -33,6 +33,7 @@ #define pr_fmt(fmt) "xen:" KBUILD_MODNAME ": " fmt +#include <linux/bitmap.h> #include <linux/memblock.h> #include <linux/sched.h> #include <linux/mm.h> @@ -70,9 +71,32 @@ static grant_ref_t **gnttab_list; static unsigned int nr_grant_frames; + +/* + * Handling of free grants: + * + * Free grants are in a simple list anchored in gnttab_free_head. They are + * linked by grant ref, the last element contains GNTTAB_LIST_END. The number + * of free entries is stored in gnttab_free_count. + * Additionally there is a bitmap of free entries anchored in + * gnttab_free_bitmap. This is being used for simplifying allocation of + * multiple consecutive grants, which is needed e.g. for support of virtio. + * gnttab_last_free is used to add free entries of new frames at the end of + * the free list. + * gnttab_free_tail_ptr specifies the variable which references the start + * of consecutive free grants ending with gnttab_last_free. This pointer is + * updated in a rather defensive way, in order to avoid performance hits in + * hot paths. + * All those variables are protected by gnttab_list_lock. + */ static int gnttab_free_count; -static grant_ref_t gnttab_free_head; +static unsigned int gnttab_size; +static grant_ref_t gnttab_free_head = GNTTAB_LIST_END; +static grant_ref_t gnttab_last_free = GNTTAB_LIST_END; +static grant_ref_t *gnttab_free_tail_ptr; +static unsigned long *gnttab_free_bitmap; static DEFINE_SPINLOCK(gnttab_list_lock); + struct grant_frames xen_auto_xlat_grant_frames; static unsigned int xen_gnttab_version; module_param_named(version, xen_gnttab_version, uint, 0); @@ -168,16 +192,116 @@ static int get_free_entries(unsigned count) ref = head = gnttab_free_head; gnttab_free_count -= count; - while (count-- > 1) - head = gnttab_entry(head); + while (count--) { + bitmap_clear(gnttab_free_bitmap, head, 1); + if (gnttab_free_tail_ptr == __gnttab_entry(head)) + gnttab_free_tail_ptr = &gnttab_free_head; + if (count) + head = gnttab_entry(head); + } gnttab_free_head = gnttab_entry(head); gnttab_entry(head) = GNTTAB_LIST_END; + if (!gnttab_free_count) { + gnttab_last_free = GNTTAB_LIST_END; + gnttab_free_tail_ptr = NULL; + } + spin_unlock_irqrestore(&gnttab_list_lock, flags); return ref; } +static int get_seq_entry_count(void) +{ + if (gnttab_last_free == GNTTAB_LIST_END || !gnttab_free_tail_ptr || + *gnttab_free_tail_ptr == GNTTAB_LIST_END) + return 0; + + return gnttab_last_free - *gnttab_free_tail_ptr + 1; +} + +/* Rebuilds the free grant list and tries to find count consecutive entries. */ +static int get_free_seq(unsigned int count) +{ + int ret = -ENOSPC; + unsigned int from, to; + grant_ref_t *last; + + gnttab_free_tail_ptr = &gnttab_free_head; + last = &gnttab_free_head; + + for (from = find_first_bit(gnttab_free_bitmap, gnttab_size); + from < gnttab_size; + from = find_next_bit(gnttab_free_bitmap, gnttab_size, to + 1)) { + to = find_next_zero_bit(gnttab_free_bitmap, gnttab_size, + from + 1); + if (ret < 0 && to - from >= count) { + ret = from; + bitmap_clear(gnttab_free_bitmap, ret, count); + from += count; + gnttab_free_count -= count; + if (from == to) + continue; + } + + /* + * Recreate the free list in order to have it properly sorted. + * This is needed to make sure that the free tail has the maximum + * possible size. + */ + while (from < to) { + *last = from; + last = __gnttab_entry(from); + gnttab_last_free = from; + from++; + } + if (to < gnttab_size) + gnttab_free_tail_ptr = __gnttab_entry(to - 1); + } + + *last = GNTTAB_LIST_END; + if (gnttab_last_free != gnttab_size - 1) + gnttab_free_tail_ptr = NULL; + + return ret; +} + +static int get_free_entries_seq(unsigned int count) +{ + unsigned long flags; + int ret = 0; + + spin_lock_irqsave(&gnttab_list_lock, flags); + + if (gnttab_free_count < count) { + ret = gnttab_expand(count - gnttab_free_count); + if (ret < 0) + goto out; + } + + if (get_seq_entry_count() < count) { + ret = get_free_seq(count); + if (ret >= 0) + goto out; + ret = gnttab_expand(count - get_seq_entry_count()); + if (ret < 0) + goto out; + } + + ret = *gnttab_free_tail_ptr; + *gnttab_free_tail_ptr = gnttab_entry(ret + count - 1); + gnttab_free_count -= count; + if (!gnttab_free_count) + gnttab_free_tail_ptr = NULL; + bitmap_clear(gnttab_free_bitmap, ret, count); + + out: + spin_unlock_irqrestore(&gnttab_list_lock, flags); + + return ret; +} + static void do_free_callbacks(void) { struct gnttab_free_callback *callback, *next; @@ -204,21 +328,51 @@ static inline void check_free_callbacks(void) do_free_callbacks(); } -static void put_free_entry(grant_ref_t ref) +static void put_free_entry_locked(grant_ref_t ref) { - unsigned long flags; - if (unlikely(ref < GNTTAB_NR_RESERVED_ENTRIES)) return; - spin_lock_irqsave(&gnttab_list_lock, flags); gnttab_entry(ref) = gnttab_free_head; gnttab_free_head = ref; + if (!gnttab_free_count) + gnttab_last_free = ref; + if (gnttab_free_tail_ptr == &gnttab_free_head) + gnttab_free_tail_ptr = __gnttab_entry(ref); gnttab_free_count++; + bitmap_set(gnttab_free_bitmap, ref, 1); +} + +static void put_free_entry(grant_ref_t ref) +{ + unsigned long flags; + + spin_lock_irqsave(&gnttab_list_lock, flags); + put_free_entry_locked(ref); check_free_callbacks(); spin_unlock_irqrestore(&gnttab_list_lock, flags); } +static void gnttab_set_free(unsigned int start, unsigned int n) +{ + unsigned int i; + + for (i = start; i < start + n - 1; i++) + gnttab_entry(i) = i + 1; + + gnttab_entry(i) = GNTTAB_LIST_END; + if (!gnttab_free_count) { + gnttab_free_head = start; + gnttab_free_tail_ptr = &gnttab_free_head; + } else { + gnttab_entry(gnttab_last_free) = start; + } + gnttab_free_count += n; + gnttab_last_free = i; + + bitmap_set(gnttab_free_bitmap, start, n); +} + /* * Following applies to gnttab_update_entry_v1 and gnttab_update_entry_v2. * Introducing a valid entry into the grant table: @@ -450,23 +604,31 @@ void gnttab_free_grant_references(grant_ref_t head) { grant_ref_t ref; unsigned long flags; - int count = 1; - if (head == GNTTAB_LIST_END) - return; + spin_lock_irqsave(&gnttab_list_lock, flags); - ref = head; - while (gnttab_entry(ref) != GNTTAB_LIST_END) { - ref = gnttab_entry(ref); - count++; + while (head != GNTTAB_LIST_END) { + ref = gnttab_entry(head); + put_free_entry_locked(head); + head = ref; } - gnttab_entry(ref) = gnttab_free_head; - gnttab_free_head = head; - gnttab_free_count += count; check_free_callbacks(); spin_unlock_irqrestore(&gnttab_list_lock, flags); } EXPORT_SYMBOL_GPL(gnttab_free_grant_references); +void gnttab_free_grant_reference_seq(grant_ref_t head, unsigned int count) +{ + unsigned long flags; + unsigned int i; + + spin_lock_irqsave(&gnttab_list_lock, flags); + for (i = count; i > 0; i--) + put_free_entry_locked(head + i - 1); + check_free_callbacks(); + spin_unlock_irqrestore(&gnttab_list_lock, flags); +} +EXPORT_SYMBOL_GPL(gnttab_free_grant_reference_seq); + int gnttab_alloc_grant_references(u16 count, grant_ref_t *head) { int h = get_free_entries(count); @@ -480,6 +642,24 @@ int gnttab_alloc_grant_references(u16 count, grant_ref_t *head) } EXPORT_SYMBOL_GPL(gnttab_alloc_grant_references); +int gnttab_alloc_grant_reference_seq(unsigned int count, grant_ref_t *first) +{ + int h; + + if (count == 1) + h = get_free_entries(1); + else + h = get_free_entries_seq(count); + + if (h < 0) + return -ENOSPC; + + *first = h; + + return 0; +} +EXPORT_SYMBOL_GPL(gnttab_alloc_grant_reference_seq); + int gnttab_empty_grant_references(const grant_ref_t *private_head) { return (*private_head == GNTTAB_LIST_END); @@ -572,16 +752,13 @@ static int grow_gnttab_list(unsigned int more_frames) goto grow_nomem; } + gnttab_set_free(gnttab_size, extra_entries); - for (i = grefs_per_frame * nr_grant_frames; - i < grefs_per_frame * new_nr_grant_frames - 1; i++) - gnttab_entry(i) = i + 1; - - gnttab_entry(i) = gnttab_free_head; - gnttab_free_head = grefs_per_frame * nr_grant_frames; - gnttab_free_count += extra_entries; + if (!gnttab_free_tail_ptr) + gnttab_free_tail_ptr = __gnttab_entry(gnttab_size); nr_grant_frames = new_nr_grant_frames; + gnttab_size += extra_entries; check_free_callbacks(); @@ -1424,20 +1601,20 @@ static int gnttab_expand(unsigned int req_entries) int gnttab_init(void) { int i; - unsigned long max_nr_grant_frames; + unsigned long max_nr_grant_frames, max_nr_grefs; unsigned int max_nr_glist_frames, nr_glist_frames; - unsigned int nr_init_grefs; int ret; gnttab_request_version(); max_nr_grant_frames = gnttab_max_grant_frames(); + max_nr_grefs = max_nr_grant_frames * + gnttab_interface->grefs_per_grant_frame; nr_grant_frames = 1; /* Determine the maximum number of frames required for the * grant reference free list on the current hypervisor. */ - max_nr_glist_frames = (max_nr_grant_frames * - gnttab_interface->grefs_per_grant_frame / RPP); + max_nr_glist_frames = max_nr_grefs / RPP; gnttab_list = kmalloc_array(max_nr_glist_frames, sizeof(grant_ref_t *), @@ -1454,6 +1631,12 @@ int gnttab_init(void) } } + gnttab_free_bitmap = bitmap_zalloc(max_nr_grefs, GFP_KERNEL); + if (!gnttab_free_bitmap) { + ret = -ENOMEM; + goto ini_nomem; + } + ret = arch_gnttab_init(max_nr_grant_frames, nr_status_frames(max_nr_grant_frames)); if (ret < 0) @@ -1464,15 +1647,10 @@ int gnttab_init(void) goto ini_nomem; } - nr_init_grefs = nr_grant_frames * - gnttab_interface->grefs_per_grant_frame; - - for (i = GNTTAB_NR_RESERVED_ENTRIES; i < nr_init_grefs - 1; i++) - gnttab_entry(i) = i + 1; + gnttab_size = nr_grant_frames * gnttab_interface->grefs_per_grant_frame; - gnttab_entry(nr_init_grefs - 1) = GNTTAB_LIST_END; - gnttab_free_count = nr_init_grefs - GNTTAB_NR_RESERVED_ENTRIES; - gnttab_free_head = GNTTAB_NR_RESERVED_ENTRIES; + gnttab_set_free(GNTTAB_NR_RESERVED_ENTRIES, + gnttab_size - GNTTAB_NR_RESERVED_ENTRIES); printk("Grant table initialized\n"); return 0; @@ -1481,6 +1659,7 @@ int gnttab_init(void) for (i--; i >= 0; i--) free_page((unsigned long)gnttab_list[i]); kfree(gnttab_list); + bitmap_free(gnttab_free_bitmap); return ret; } EXPORT_SYMBOL_GPL(gnttab_init); diff --git a/drivers/xen/xlate_mmu.c b/drivers/xen/xlate_mmu.c index 34742c6e189e..f17c4c03db30 100644 --- a/drivers/xen/xlate_mmu.c +++ b/drivers/xen/xlate_mmu.c @@ -261,7 +261,6 @@ int __init xen_xlate_map_ballooned_pages(xen_pfn_t **gfns, void **virt, return 0; } -EXPORT_SYMBOL_GPL(xen_xlate_map_ballooned_pages); struct remap_pfn { struct mm_struct *mm; diff --git a/fs/9p/cache.c b/fs/9p/cache.c index 1c8dc696d516..cebba4eaa0b5 100644 --- a/fs/9p/cache.c +++ b/fs/9p/cache.c @@ -62,12 +62,12 @@ void v9fs_cache_inode_get_cookie(struct inode *inode) version = cpu_to_le32(v9inode->qid.version); path = cpu_to_le64(v9inode->qid.path); v9ses = v9fs_inode2v9ses(inode); - v9inode->netfs_ctx.cache = + v9inode->netfs.cache = fscache_acquire_cookie(v9fs_session_cache(v9ses), 0, &path, sizeof(path), &version, sizeof(version), - i_size_read(&v9inode->vfs_inode)); + i_size_read(&v9inode->netfs.inode)); p9_debug(P9_DEBUG_FSC, "inode %p get cookie %p\n", inode, v9fs_inode_cookie(v9inode)); diff --git a/fs/9p/v9fs.c b/fs/9p/v9fs.c index e28ddf763b3b..0129de2ea31a 100644 --- a/fs/9p/v9fs.c +++ b/fs/9p/v9fs.c @@ -625,7 +625,7 @@ static void v9fs_inode_init_once(void *foo) struct v9fs_inode *v9inode = (struct v9fs_inode *)foo; memset(&v9inode->qid, 0, sizeof(v9inode->qid)); - inode_init_once(&v9inode->vfs_inode); + inode_init_once(&v9inode->netfs.inode); } /** diff --git a/fs/9p/v9fs.h b/fs/9p/v9fs.h index ec0e8df3b2eb..1b219c21d15e 100644 --- a/fs/9p/v9fs.h +++ b/fs/9p/v9fs.h @@ -109,11 +109,7 @@ struct v9fs_session_info { #define V9FS_INO_INVALID_ATTR 0x01 struct v9fs_inode { - struct { - /* These must be contiguous */ - struct inode vfs_inode; /* the VFS's inode record */ - struct netfs_i_context netfs_ctx; /* Netfslib context */ - }; + struct netfs_inode netfs; /* Netfslib context and vfs inode */ struct p9_qid qid; unsigned int cache_validity; struct p9_fid *writeback_fid; @@ -122,13 +118,13 @@ struct v9fs_inode { static inline struct v9fs_inode *V9FS_I(const struct inode *inode) { - return container_of(inode, struct v9fs_inode, vfs_inode); + return container_of(inode, struct v9fs_inode, netfs.inode); } static inline struct fscache_cookie *v9fs_inode_cookie(struct v9fs_inode *v9inode) { #ifdef CONFIG_9P_FSCACHE - return netfs_i_cookie(&v9inode->vfs_inode); + return netfs_i_cookie(&v9inode->netfs.inode); #else return NULL; #endif diff --git a/fs/9p/vfs_addr.c b/fs/9p/vfs_addr.c index 8ce82ff1e40a..90c6c1ba03ab 100644 --- a/fs/9p/vfs_addr.c +++ b/fs/9p/vfs_addr.c @@ -140,7 +140,7 @@ static void v9fs_write_to_cache_done(void *priv, ssize_t transferred_or_error, transferred_or_error != -ENOBUFS) { version = cpu_to_le32(v9inode->qid.version); fscache_invalidate(v9fs_inode_cookie(v9inode), &version, - i_size_read(&v9inode->vfs_inode), 0); + i_size_read(&v9inode->netfs.inode), 0); } } diff --git a/fs/9p/vfs_inode.c b/fs/9p/vfs_inode.c index 55367ecb9442..e660c6348b9d 100644 --- a/fs/9p/vfs_inode.c +++ b/fs/9p/vfs_inode.c @@ -234,7 +234,7 @@ struct inode *v9fs_alloc_inode(struct super_block *sb) v9inode->writeback_fid = NULL; v9inode->cache_validity = 0; mutex_init(&v9inode->v_mutex); - return &v9inode->vfs_inode; + return &v9inode->netfs.inode; } /** @@ -252,7 +252,7 @@ void v9fs_free_inode(struct inode *inode) */ static void v9fs_set_netfs_context(struct inode *inode) { - netfs_i_context_init(inode, &v9fs_req_ops); + netfs_inode_init(inode, &v9fs_req_ops); } int v9fs_init_inode(struct v9fs_session_info *v9ses, diff --git a/fs/afs/callback.c b/fs/afs/callback.c index 1b4d5809808d..a484fa642808 100644 --- a/fs/afs/callback.c +++ b/fs/afs/callback.c @@ -30,7 +30,7 @@ void afs_invalidate_mmap_work(struct work_struct *work) { struct afs_vnode *vnode = container_of(work, struct afs_vnode, cb_work); - unmap_mapping_pages(vnode->vfs_inode.i_mapping, 0, 0, false); + unmap_mapping_pages(vnode->netfs.inode.i_mapping, 0, 0, false); } void afs_server_init_callback_work(struct work_struct *work) diff --git a/fs/afs/dir.c b/fs/afs/dir.c index 79f6b74336d2..56ae5cd5184f 100644 --- a/fs/afs/dir.c +++ b/fs/afs/dir.c @@ -109,7 +109,7 @@ struct afs_lookup_cookie { */ static void afs_dir_read_cleanup(struct afs_read *req) { - struct address_space *mapping = req->vnode->vfs_inode.i_mapping; + struct address_space *mapping = req->vnode->netfs.inode.i_mapping; struct folio *folio; pgoff_t last = req->nr_pages - 1; @@ -153,7 +153,7 @@ static bool afs_dir_check_folio(struct afs_vnode *dvnode, struct folio *folio, block = kmap_local_folio(folio, offset); if (block->hdr.magic != AFS_DIR_MAGIC) { printk("kAFS: %s(%lx): [%llx] bad magic %zx/%zx is %04hx\n", - __func__, dvnode->vfs_inode.i_ino, + __func__, dvnode->netfs.inode.i_ino, pos, offset, size, ntohs(block->hdr.magic)); trace_afs_dir_check_failed(dvnode, pos + offset, i_size); kunmap_local(block); @@ -183,7 +183,7 @@ error: static void afs_dir_dump(struct afs_vnode *dvnode, struct afs_read *req) { union afs_xdr_dir_block *block; - struct address_space *mapping = dvnode->vfs_inode.i_mapping; + struct address_space *mapping = dvnode->netfs.inode.i_mapping; struct folio *folio; pgoff_t last = req->nr_pages - 1; size_t offset, size; @@ -217,7 +217,7 @@ static void afs_dir_dump(struct afs_vnode *dvnode, struct afs_read *req) */ static int afs_dir_check(struct afs_vnode *dvnode, struct afs_read *req) { - struct address_space *mapping = dvnode->vfs_inode.i_mapping; + struct address_space *mapping = dvnode->netfs.inode.i_mapping; struct folio *folio; pgoff_t last = req->nr_pages - 1; int ret = 0; @@ -269,7 +269,7 @@ static int afs_dir_open(struct inode *inode, struct file *file) static struct afs_read *afs_read_dir(struct afs_vnode *dvnode, struct key *key) __acquires(&dvnode->validate_lock) { - struct address_space *mapping = dvnode->vfs_inode.i_mapping; + struct address_space *mapping = dvnode->netfs.inode.i_mapping; struct afs_read *req; loff_t i_size; int nr_pages, i; @@ -287,7 +287,7 @@ static struct afs_read *afs_read_dir(struct afs_vnode *dvnode, struct key *key) req->cleanup = afs_dir_read_cleanup; expand: - i_size = i_size_read(&dvnode->vfs_inode); + i_size = i_size_read(&dvnode->netfs.inode); if (i_size < 2048) { ret = afs_bad(dvnode, afs_file_error_dir_small); goto error; @@ -305,7 +305,7 @@ expand: req->actual_len = i_size; /* May change */ req->len = nr_pages * PAGE_SIZE; /* We can ask for more than there is */ req->data_version = dvnode->status.data_version; /* May change */ - iov_iter_xarray(&req->def_iter, READ, &dvnode->vfs_inode.i_mapping->i_pages, + iov_iter_xarray(&req->def_iter, READ, &dvnode->netfs.inode.i_mapping->i_pages, 0, i_size); req->iter = &req->def_iter; @@ -897,7 +897,7 @@ static struct inode *afs_do_lookup(struct inode *dir, struct dentry *dentry, out_op: if (op->error == 0) { - inode = &op->file[1].vnode->vfs_inode; + inode = &op->file[1].vnode->netfs.inode; op->file[1].vnode = NULL; } @@ -1139,7 +1139,7 @@ static int afs_d_revalidate(struct dentry *dentry, unsigned int flags) afs_stat_v(dir, n_reval); /* search the directory for this vnode */ - ret = afs_do_lookup_one(&dir->vfs_inode, dentry, &fid, key, &dir_version); + ret = afs_do_lookup_one(&dir->netfs.inode, dentry, &fid, key, &dir_version); switch (ret) { case 0: /* the filename maps to something */ @@ -1170,7 +1170,7 @@ static int afs_d_revalidate(struct dentry *dentry, unsigned int flags) _debug("%pd: file deleted (uq %u -> %u I:%u)", dentry, fid.unique, vnode->fid.unique, - vnode->vfs_inode.i_generation); + vnode->netfs.inode.i_generation); goto not_found; } goto out_valid; @@ -1368,7 +1368,7 @@ static void afs_dir_remove_subdir(struct dentry *dentry) if (d_really_is_positive(dentry)) { struct afs_vnode *vnode = AFS_FS_I(d_inode(dentry)); - clear_nlink(&vnode->vfs_inode); + clear_nlink(&vnode->netfs.inode); set_bit(AFS_VNODE_DELETED, &vnode->flags); clear_bit(AFS_VNODE_CB_PROMISED, &vnode->flags); clear_bit(AFS_VNODE_DIR_VALID, &vnode->flags); @@ -1487,8 +1487,8 @@ static void afs_dir_remove_link(struct afs_operation *op) /* Already done */ } else if (test_bit(AFS_VNODE_DIR_VALID, &dvnode->flags)) { write_seqlock(&vnode->cb_lock); - drop_nlink(&vnode->vfs_inode); - if (vnode->vfs_inode.i_nlink == 0) { + drop_nlink(&vnode->netfs.inode); + if (vnode->netfs.inode.i_nlink == 0) { set_bit(AFS_VNODE_DELETED, &vnode->flags); __afs_break_callback(vnode, afs_cb_break_for_unlink); } @@ -1504,7 +1504,7 @@ static void afs_dir_remove_link(struct afs_operation *op) op->error = ret; } - _debug("nlink %d [val %d]", vnode->vfs_inode.i_nlink, op->error); + _debug("nlink %d [val %d]", vnode->netfs.inode.i_nlink, op->error); } static void afs_unlink_success(struct afs_operation *op) @@ -1680,8 +1680,8 @@ static void afs_link_success(struct afs_operation *op) afs_update_dentry_version(op, dvp, op->dentry); if (op->dentry_2->d_parent == op->dentry->d_parent) afs_update_dentry_version(op, dvp, op->dentry_2); - ihold(&vp->vnode->vfs_inode); - d_instantiate(op->dentry, &vp->vnode->vfs_inode); + ihold(&vp->vnode->netfs.inode); + d_instantiate(op->dentry, &vp->vnode->netfs.inode); } static void afs_link_put(struct afs_operation *op) diff --git a/fs/afs/dir_edit.c b/fs/afs/dir_edit.c index d98e109ecee9..0ab7752d1b75 100644 --- a/fs/afs/dir_edit.c +++ b/fs/afs/dir_edit.c @@ -109,7 +109,7 @@ static void afs_clear_contig_bits(union afs_xdr_dir_block *block, */ static struct folio *afs_dir_get_folio(struct afs_vnode *vnode, pgoff_t index) { - struct address_space *mapping = vnode->vfs_inode.i_mapping; + struct address_space *mapping = vnode->netfs.inode.i_mapping; struct folio *folio; folio = __filemap_get_folio(mapping, index, @@ -216,7 +216,7 @@ void afs_edit_dir_add(struct afs_vnode *vnode, _enter(",,{%d,%s},", name->len, name->name); - i_size = i_size_read(&vnode->vfs_inode); + i_size = i_size_read(&vnode->netfs.inode); if (i_size > AFS_DIR_BLOCK_SIZE * AFS_DIR_MAX_BLOCKS || (i_size & (AFS_DIR_BLOCK_SIZE - 1))) { clear_bit(AFS_VNODE_DIR_VALID, &vnode->flags); @@ -336,7 +336,7 @@ found_space: if (b < AFS_DIR_BLOCKS_WITH_CTR) meta->meta.alloc_ctrs[b] -= need_slots; - inode_inc_iversion_raw(&vnode->vfs_inode); + inode_inc_iversion_raw(&vnode->netfs.inode); afs_stat_v(vnode, n_dir_cr); _debug("Insert %s in %u[%u]", name->name, b, slot); @@ -383,7 +383,7 @@ void afs_edit_dir_remove(struct afs_vnode *vnode, _enter(",,{%d,%s},", name->len, name->name); - i_size = i_size_read(&vnode->vfs_inode); + i_size = i_size_read(&vnode->netfs.inode); if (i_size < AFS_DIR_BLOCK_SIZE || i_size > AFS_DIR_BLOCK_SIZE * AFS_DIR_MAX_BLOCKS || (i_size & (AFS_DIR_BLOCK_SIZE - 1))) { @@ -463,7 +463,7 @@ found_dirent: if (b < AFS_DIR_BLOCKS_WITH_CTR) meta->meta.alloc_ctrs[b] += need_slots; - inode_set_iversion_raw(&vnode->vfs_inode, vnode->status.data_version); + inode_set_iversion_raw(&vnode->netfs.inode, vnode->status.data_version); afs_stat_v(vnode, n_dir_rm); _debug("Remove %s from %u[%u]", name->name, b, slot); diff --git a/fs/afs/dir_silly.c b/fs/afs/dir_silly.c index 45cfd50a9521..bb5807e87fa4 100644 --- a/fs/afs/dir_silly.c +++ b/fs/afs/dir_silly.c @@ -131,7 +131,7 @@ int afs_sillyrename(struct afs_vnode *dvnode, struct afs_vnode *vnode, goto out; } while (!d_is_negative(sdentry)); - ihold(&vnode->vfs_inode); + ihold(&vnode->netfs.inode); ret = afs_do_silly_rename(dvnode, vnode, dentry, sdentry, key); switch (ret) { @@ -148,7 +148,7 @@ int afs_sillyrename(struct afs_vnode *dvnode, struct afs_vnode *vnode, d_drop(sdentry); } - iput(&vnode->vfs_inode); + iput(&vnode->netfs.inode); dput(sdentry); out: _leave(" = %d", ret); diff --git a/fs/afs/dynroot.c b/fs/afs/dynroot.c index f120bcb8bf73..3a5bbffdf053 100644 --- a/fs/afs/dynroot.c +++ b/fs/afs/dynroot.c @@ -76,7 +76,7 @@ struct inode *afs_iget_pseudo_dir(struct super_block *sb, bool root) /* there shouldn't be an existing inode */ BUG_ON(!(inode->i_state & I_NEW)); - netfs_i_context_init(inode, NULL); + netfs_inode_init(inode, NULL); inode->i_size = 0; inode->i_mode = S_IFDIR | S_IRUGO | S_IXUGO; if (root) { diff --git a/fs/afs/file.c b/fs/afs/file.c index a8e8832179e4..4de7af7c2f09 100644 --- a/fs/afs/file.c +++ b/fs/afs/file.c @@ -194,7 +194,7 @@ int afs_release(struct inode *inode, struct file *file) afs_put_wb_key(af->wb); if ((file->f_mode & FMODE_WRITE)) { - i_size = i_size_read(&vnode->vfs_inode); + i_size = i_size_read(&vnode->netfs.inode); afs_set_cache_aux(vnode, &aux); fscache_unuse_cookie(afs_vnode_cache(vnode), &aux, &i_size); } else { @@ -325,7 +325,7 @@ static void afs_issue_read(struct netfs_io_subrequest *subreq) fsreq->iter = &fsreq->def_iter; iov_iter_xarray(&fsreq->def_iter, READ, - &fsreq->vnode->vfs_inode.i_mapping->i_pages, + &fsreq->vnode->netfs.inode.i_mapping->i_pages, fsreq->pos, fsreq->len); afs_fetch_data(fsreq->vnode, fsreq); diff --git a/fs/afs/fs_operation.c b/fs/afs/fs_operation.c index d222dfbe976b..7a3803ce3a22 100644 --- a/fs/afs/fs_operation.c +++ b/fs/afs/fs_operation.c @@ -232,14 +232,14 @@ int afs_put_operation(struct afs_operation *op) if (op->file[1].modification && op->file[1].vnode != op->file[0].vnode) clear_bit(AFS_VNODE_MODIFYING, &op->file[1].vnode->flags); if (op->file[0].put_vnode) - iput(&op->file[0].vnode->vfs_inode); + iput(&op->file[0].vnode->netfs.inode); if (op->file[1].put_vnode) - iput(&op->file[1].vnode->vfs_inode); + iput(&op->file[1].vnode->netfs.inode); if (op->more_files) { for (i = 0; i < op->nr_files - 2; i++) if (op->more_files[i].put_vnode) - iput(&op->more_files[i].vnode->vfs_inode); + iput(&op->more_files[i].vnode->netfs.inode); kfree(op->more_files); } diff --git a/fs/afs/inode.c b/fs/afs/inode.c index 65b439cd53d2..22811e9eacf5 100644 --- a/fs/afs/inode.c +++ b/fs/afs/inode.c @@ -25,9 +25,6 @@ #include "internal.h" #include "afs_fs.h" -// Temporary: netfs does disgusting things with inode pointers -#pragma GCC diagnostic ignored "-Wattribute-warning" - static const struct inode_operations afs_symlink_inode_operations = { .get_link = page_get_link, }; @@ -61,7 +58,7 @@ static noinline void dump_vnode(struct afs_vnode *vnode, struct afs_vnode *paren */ static void afs_set_netfs_context(struct afs_vnode *vnode) { - netfs_i_context_init(&vnode->vfs_inode, &afs_req_ops); + netfs_inode_init(&vnode->netfs.inode, &afs_req_ops); } /* @@ -99,7 +96,7 @@ static int afs_inode_init_from_status(struct afs_operation *op, inode->i_flags |= S_NOATIME; inode->i_uid = make_kuid(&init_user_ns, status->owner); inode->i_gid = make_kgid(&init_user_ns, status->group); - set_nlink(&vnode->vfs_inode, status->nlink); + set_nlink(&vnode->netfs.inode, status->nlink); switch (status->type) { case AFS_FTYPE_FILE: @@ -142,7 +139,7 @@ static int afs_inode_init_from_status(struct afs_operation *op, afs_set_netfs_context(vnode); vnode->invalid_before = status->data_version; - inode_set_iversion_raw(&vnode->vfs_inode, status->data_version); + inode_set_iversion_raw(&vnode->netfs.inode, status->data_version); if (!vp->scb.have_cb) { /* it's a symlink we just created (the fileserver @@ -166,7 +163,7 @@ static void afs_apply_status(struct afs_operation *op, { struct afs_file_status *status = &vp->scb.status; struct afs_vnode *vnode = vp->vnode; - struct inode *inode = &vnode->vfs_inode; + struct inode *inode = &vnode->netfs.inode; struct timespec64 t; umode_t mode; bool data_changed = false; @@ -249,7 +246,7 @@ static void afs_apply_status(struct afs_operation *op, * idea of what the size should be that's not the same as * what's on the server. */ - vnode->netfs_ctx.remote_i_size = status->size; + vnode->netfs.remote_i_size = status->size; if (change_size) { afs_set_i_size(vnode, status->size); inode->i_ctime = t; @@ -292,7 +289,7 @@ void afs_vnode_commit_status(struct afs_operation *op, struct afs_vnode_param *v */ if (vp->scb.status.abort_code == VNOVNODE) { set_bit(AFS_VNODE_DELETED, &vnode->flags); - clear_nlink(&vnode->vfs_inode); + clear_nlink(&vnode->netfs.inode); __afs_break_callback(vnode, afs_cb_break_for_deleted); op->flags &= ~AFS_OPERATION_DIR_CONFLICT; } @@ -309,8 +306,8 @@ void afs_vnode_commit_status(struct afs_operation *op, struct afs_vnode_param *v if (vp->scb.have_cb) afs_apply_callback(op, vp); } else if (vp->op_unlinked && !(op->flags & AFS_OPERATION_DIR_CONFLICT)) { - drop_nlink(&vnode->vfs_inode); - if (vnode->vfs_inode.i_nlink == 0) { + drop_nlink(&vnode->netfs.inode); + if (vnode->netfs.inode.i_nlink == 0) { set_bit(AFS_VNODE_DELETED, &vnode->flags); __afs_break_callback(vnode, afs_cb_break_for_deleted); } @@ -329,7 +326,7 @@ static void afs_fetch_status_success(struct afs_operation *op) struct afs_vnode *vnode = vp->vnode; int ret; - if (vnode->vfs_inode.i_state & I_NEW) { + if (vnode->netfs.inode.i_state & I_NEW) { ret = afs_inode_init_from_status(op, vp, vnode); op->error = ret; if (ret == 0) @@ -433,7 +430,7 @@ static void afs_get_inode_cache(struct afs_vnode *vnode) struct afs_vnode_cache_aux aux; if (vnode->status.type != AFS_FTYPE_FILE) { - vnode->netfs_ctx.cache = NULL; + vnode->netfs.cache = NULL; return; } @@ -460,7 +457,7 @@ static void afs_get_inode_cache(struct afs_vnode *vnode) struct inode *afs_iget(struct afs_operation *op, struct afs_vnode_param *vp) { struct afs_vnode_param *dvp = &op->file[0]; - struct super_block *sb = dvp->vnode->vfs_inode.i_sb; + struct super_block *sb = dvp->vnode->netfs.inode.i_sb; struct afs_vnode *vnode; struct inode *inode; int ret; @@ -585,10 +582,10 @@ static void afs_zap_data(struct afs_vnode *vnode) /* nuke all the non-dirty pages that aren't locked, mapped or being * written back in a regular file and completely discard the pages in a * directory or symlink */ - if (S_ISREG(vnode->vfs_inode.i_mode)) - invalidate_remote_inode(&vnode->vfs_inode); + if (S_ISREG(vnode->netfs.inode.i_mode)) + invalidate_remote_inode(&vnode->netfs.inode); else - invalidate_inode_pages2(vnode->vfs_inode.i_mapping); + invalidate_inode_pages2(vnode->netfs.inode.i_mapping); } /* @@ -686,8 +683,8 @@ int afs_validate(struct afs_vnode *vnode, struct key *key) key_serial(key)); if (unlikely(test_bit(AFS_VNODE_DELETED, &vnode->flags))) { - if (vnode->vfs_inode.i_nlink) - clear_nlink(&vnode->vfs_inode); + if (vnode->netfs.inode.i_nlink) + clear_nlink(&vnode->netfs.inode); goto valid; } @@ -829,7 +826,7 @@ void afs_evict_inode(struct inode *inode) static void afs_setattr_success(struct afs_operation *op) { struct afs_vnode_param *vp = &op->file[0]; - struct inode *inode = &vp->vnode->vfs_inode; + struct inode *inode = &vp->vnode->netfs.inode; loff_t old_i_size = i_size_read(inode); op->setattr.old_i_size = old_i_size; @@ -846,7 +843,7 @@ static void afs_setattr_success(struct afs_operation *op) static void afs_setattr_edit_file(struct afs_operation *op) { struct afs_vnode_param *vp = &op->file[0]; - struct inode *inode = &vp->vnode->vfs_inode; + struct inode *inode = &vp->vnode->netfs.inode; if (op->setattr.attr->ia_valid & ATTR_SIZE) { loff_t size = op->setattr.attr->ia_size; @@ -878,7 +875,7 @@ int afs_setattr(struct user_namespace *mnt_userns, struct dentry *dentry, ATTR_MTIME | ATTR_MTIME_SET | ATTR_TIMES_SET | ATTR_TOUCH; struct afs_operation *op; struct afs_vnode *vnode = AFS_FS_I(d_inode(dentry)); - struct inode *inode = &vnode->vfs_inode; + struct inode *inode = &vnode->netfs.inode; loff_t i_size; int ret; diff --git a/fs/afs/internal.h b/fs/afs/internal.h index a30995901266..984b113a9107 100644 --- a/fs/afs/internal.h +++ b/fs/afs/internal.h @@ -619,12 +619,7 @@ enum afs_lock_state { * leak from one inode to another. */ struct afs_vnode { - struct { - /* These must be contiguous */ - struct inode vfs_inode; /* the VFS's inode record */ - struct netfs_i_context netfs_ctx; /* Netfslib context */ - }; - + struct netfs_inode netfs; /* Netfslib context and vfs inode */ struct afs_volume *volume; /* volume on which vnode resides */ struct afs_fid fid; /* the file identifier for this inode */ struct afs_file_status status; /* AFS status info for this file */ @@ -675,7 +670,7 @@ struct afs_vnode { static inline struct fscache_cookie *afs_vnode_cache(struct afs_vnode *vnode) { #ifdef CONFIG_AFS_FSCACHE - return netfs_i_cookie(&vnode->vfs_inode); + return netfs_i_cookie(&vnode->netfs.inode); #else return NULL; #endif @@ -685,7 +680,7 @@ static inline void afs_vnode_set_cache(struct afs_vnode *vnode, struct fscache_cookie *cookie) { #ifdef CONFIG_AFS_FSCACHE - vnode->netfs_ctx.cache = cookie; + vnode->netfs.cache = cookie; #endif } @@ -892,7 +887,7 @@ static inline void afs_invalidate_cache(struct afs_vnode *vnode, unsigned int fl afs_set_cache_aux(vnode, &aux); fscache_invalidate(afs_vnode_cache(vnode), &aux, - i_size_read(&vnode->vfs_inode), flags); + i_size_read(&vnode->netfs.inode), flags); } /* @@ -1217,7 +1212,7 @@ static inline struct afs_net *afs_i2net(struct inode *inode) static inline struct afs_net *afs_v2net(struct afs_vnode *vnode) { - return afs_i2net(&vnode->vfs_inode); + return afs_i2net(&vnode->netfs.inode); } static inline struct afs_net *afs_sock2net(struct sock *sk) @@ -1593,12 +1588,12 @@ extern void yfs_fs_store_opaque_acl2(struct afs_operation *); */ static inline struct afs_vnode *AFS_FS_I(struct inode *inode) { - return container_of(inode, struct afs_vnode, vfs_inode); + return container_of(inode, struct afs_vnode, netfs.inode); } static inline struct inode *AFS_VNODE_TO_I(struct afs_vnode *vnode) { - return &vnode->vfs_inode; + return &vnode->netfs.inode; } /* @@ -1621,8 +1616,8 @@ static inline void afs_update_dentry_version(struct afs_operation *op, */ static inline void afs_set_i_size(struct afs_vnode *vnode, u64 size) { - i_size_write(&vnode->vfs_inode, size); - vnode->vfs_inode.i_blocks = ((size + 1023) >> 10) << 1; + i_size_write(&vnode->netfs.inode, size); + vnode->netfs.inode.i_blocks = ((size + 1023) >> 10) << 1; } /* diff --git a/fs/afs/super.c b/fs/afs/super.c index 1fea195b0b27..95d713074dc8 100644 --- a/fs/afs/super.c +++ b/fs/afs/super.c @@ -659,7 +659,7 @@ static void afs_i_init_once(void *_vnode) struct afs_vnode *vnode = _vnode; memset(vnode, 0, sizeof(*vnode)); - inode_init_once(&vnode->vfs_inode); + inode_init_once(&vnode->netfs.inode); mutex_init(&vnode->io_lock); init_rwsem(&vnode->validate_lock); spin_lock_init(&vnode->wb_lock); @@ -700,8 +700,8 @@ static struct inode *afs_alloc_inode(struct super_block *sb) init_rwsem(&vnode->rmdir_lock); INIT_WORK(&vnode->cb_work, afs_invalidate_mmap_work); - _leave(" = %p", &vnode->vfs_inode); - return &vnode->vfs_inode; + _leave(" = %p", &vnode->netfs.inode); + return &vnode->netfs.inode; } static void afs_free_inode(struct inode *inode) diff --git a/fs/afs/write.c b/fs/afs/write.c index 2236b2165e37..f80a6096d91c 100644 --- a/fs/afs/write.c +++ b/fs/afs/write.c @@ -146,10 +146,10 @@ int afs_write_end(struct file *file, struct address_space *mapping, write_end_pos = pos + copied; - i_size = i_size_read(&vnode->vfs_inode); + i_size = i_size_read(&vnode->netfs.inode); if (write_end_pos > i_size) { write_seqlock(&vnode->cb_lock); - i_size = i_size_read(&vnode->vfs_inode); + i_size = i_size_read(&vnode->netfs.inode); if (write_end_pos > i_size) afs_set_i_size(vnode, write_end_pos); write_sequnlock(&vnode->cb_lock); @@ -257,7 +257,7 @@ static void afs_redirty_pages(struct writeback_control *wbc, */ static void afs_pages_written_back(struct afs_vnode *vnode, loff_t start, unsigned int len) { - struct address_space *mapping = vnode->vfs_inode.i_mapping; + struct address_space *mapping = vnode->netfs.inode.i_mapping; struct folio *folio; pgoff_t end; @@ -354,7 +354,6 @@ static const struct afs_operation_ops afs_store_data_operation = { static int afs_store_data(struct afs_vnode *vnode, struct iov_iter *iter, loff_t pos, bool laundering) { - struct netfs_i_context *ictx = &vnode->netfs_ctx; struct afs_operation *op; struct afs_wb_key *wbk = NULL; loff_t size = iov_iter_count(iter); @@ -385,9 +384,9 @@ static int afs_store_data(struct afs_vnode *vnode, struct iov_iter *iter, loff_t op->store.write_iter = iter; op->store.pos = pos; op->store.size = size; - op->store.i_size = max(pos + size, ictx->remote_i_size); + op->store.i_size = max(pos + size, vnode->netfs.remote_i_size); op->store.laundering = laundering; - op->mtime = vnode->vfs_inode.i_mtime; + op->mtime = vnode->netfs.inode.i_mtime; op->flags |= AFS_OPERATION_UNINTR; op->ops = &afs_store_data_operation; @@ -554,7 +553,7 @@ static ssize_t afs_write_back_from_locked_folio(struct address_space *mapping, struct iov_iter iter; unsigned long priv; unsigned int offset, to, len, max_len; - loff_t i_size = i_size_read(&vnode->vfs_inode); + loff_t i_size = i_size_read(&vnode->netfs.inode); bool new_content = test_bit(AFS_VNODE_NEW_CONTENT, &vnode->flags); bool caching = fscache_cookie_enabled(afs_vnode_cache(vnode)); long count = wbc->nr_to_write; @@ -845,7 +844,7 @@ ssize_t afs_file_write(struct kiocb *iocb, struct iov_iter *from) _enter("{%llx:%llu},{%zu},", vnode->fid.vid, vnode->fid.vnode, count); - if (IS_SWAPFILE(&vnode->vfs_inode)) { + if (IS_SWAPFILE(&vnode->netfs.inode)) { printk(KERN_INFO "AFS: Attempt to write to active swap file!\n"); return -EBUSY; @@ -958,8 +957,8 @@ void afs_prune_wb_keys(struct afs_vnode *vnode) /* Discard unused keys */ spin_lock(&vnode->wb_lock); - if (!mapping_tagged(&vnode->vfs_inode.i_data, PAGECACHE_TAG_WRITEBACK) && - !mapping_tagged(&vnode->vfs_inode.i_data, PAGECACHE_TAG_DIRTY)) { + if (!mapping_tagged(&vnode->netfs.inode.i_data, PAGECACHE_TAG_WRITEBACK) && + !mapping_tagged(&vnode->netfs.inode.i_data, PAGECACHE_TAG_DIRTY)) { list_for_each_entry_safe(wbk, tmp, &vnode->wb_keys, vnode_link) { if (refcount_read(&wbk->usage) == 1) list_move(&wbk->vnode_link, &graveyard); @@ -1034,6 +1033,6 @@ static void afs_write_to_cache(struct afs_vnode *vnode, bool caching) { fscache_write_to_cache(afs_vnode_cache(vnode), - vnode->vfs_inode.i_mapping, start, len, i_size, + vnode->netfs.inode.i_mapping, start, len, i_size, afs_write_to_cache_done, vnode, caching); } diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c index e5221be6eb55..f5f116ed1b9e 100644 --- a/fs/ceph/addr.c +++ b/fs/ceph/addr.c @@ -1798,7 +1798,7 @@ enum { static int __ceph_pool_perm_get(struct ceph_inode_info *ci, s64 pool, struct ceph_string *pool_ns) { - struct ceph_fs_client *fsc = ceph_inode_to_client(&ci->vfs_inode); + struct ceph_fs_client *fsc = ceph_inode_to_client(&ci->netfs.inode); struct ceph_mds_client *mdsc = fsc->mdsc; struct ceph_osd_request *rd_req = NULL, *wr_req = NULL; struct rb_node **p, *parent; @@ -1913,7 +1913,7 @@ static int __ceph_pool_perm_get(struct ceph_inode_info *ci, 0, false, true); err = ceph_osdc_start_request(&fsc->client->osdc, rd_req, false); - wr_req->r_mtime = ci->vfs_inode.i_mtime; + wr_req->r_mtime = ci->netfs.inode.i_mtime; err2 = ceph_osdc_start_request(&fsc->client->osdc, wr_req, false); if (!err) diff --git a/fs/ceph/cache.c b/fs/ceph/cache.c index ddea99922073..177d8e8d73fe 100644 --- a/fs/ceph/cache.c +++ b/fs/ceph/cache.c @@ -29,9 +29,9 @@ void ceph_fscache_register_inode_cookie(struct inode *inode) if (!(inode->i_state & I_NEW)) return; - WARN_ON_ONCE(ci->netfs_ctx.cache); + WARN_ON_ONCE(ci->netfs.cache); - ci->netfs_ctx.cache = + ci->netfs.cache = fscache_acquire_cookie(fsc->fscache, 0, &ci->i_vino, sizeof(ci->i_vino), &ci->i_version, sizeof(ci->i_version), diff --git a/fs/ceph/cache.h b/fs/ceph/cache.h index 7255b790a4c1..26c6ae06e2f4 100644 --- a/fs/ceph/cache.h +++ b/fs/ceph/cache.h @@ -28,7 +28,7 @@ void ceph_fscache_invalidate(struct inode *inode, bool dio_write); static inline struct fscache_cookie *ceph_fscache_cookie(struct ceph_inode_info *ci) { - return netfs_i_cookie(&ci->vfs_inode); + return netfs_i_cookie(&ci->netfs.inode); } static inline void ceph_fscache_resize(struct inode *inode, loff_t to) diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c index bf2e94005598..38c930384d41 100644 --- a/fs/ceph/caps.c +++ b/fs/ceph/caps.c @@ -492,7 +492,7 @@ static void __cap_set_timeouts(struct ceph_mds_client *mdsc, struct ceph_mount_options *opt = mdsc->fsc->mount_options; ci->i_hold_caps_max = round_jiffies(jiffies + opt->caps_wanted_delay_max * HZ); - dout("__cap_set_timeouts %p %lu\n", &ci->vfs_inode, + dout("__cap_set_timeouts %p %lu\n", &ci->netfs.inode, ci->i_hold_caps_max - jiffies); } @@ -507,7 +507,7 @@ static void __cap_set_timeouts(struct ceph_mds_client *mdsc, static void __cap_delay_requeue(struct ceph_mds_client *mdsc, struct ceph_inode_info *ci) { - dout("__cap_delay_requeue %p flags 0x%lx at %lu\n", &ci->vfs_inode, + dout("__cap_delay_requeue %p flags 0x%lx at %lu\n", &ci->netfs.inode, ci->i_ceph_flags, ci->i_hold_caps_max); if (!mdsc->stopping) { spin_lock(&mdsc->cap_delay_lock); @@ -531,7 +531,7 @@ no_change: static void __cap_delay_requeue_front(struct ceph_mds_client *mdsc, struct ceph_inode_info *ci) { - dout("__cap_delay_requeue_front %p\n", &ci->vfs_inode); + dout("__cap_delay_requeue_front %p\n", &ci->netfs.inode); spin_lock(&mdsc->cap_delay_lock); ci->i_ceph_flags |= CEPH_I_FLUSH; if (!list_empty(&ci->i_cap_delay_list)) @@ -548,7 +548,7 @@ static void __cap_delay_requeue_front(struct ceph_mds_client *mdsc, static void __cap_delay_cancel(struct ceph_mds_client *mdsc, struct ceph_inode_info *ci) { - dout("__cap_delay_cancel %p\n", &ci->vfs_inode); + dout("__cap_delay_cancel %p\n", &ci->netfs.inode); if (list_empty(&ci->i_cap_delay_list)) return; spin_lock(&mdsc->cap_delay_lock); @@ -568,7 +568,7 @@ static void __check_cap_issue(struct ceph_inode_info *ci, struct ceph_cap *cap, * Each time we receive FILE_CACHE anew, we increment * i_rdcache_gen. */ - if (S_ISREG(ci->vfs_inode.i_mode) && + if (S_ISREG(ci->netfs.inode.i_mode) && (issued & (CEPH_CAP_FILE_CACHE|CEPH_CAP_FILE_LAZYIO)) && (had & (CEPH_CAP_FILE_CACHE|CEPH_CAP_FILE_LAZYIO)) == 0) { ci->i_rdcache_gen++; @@ -583,14 +583,14 @@ static void __check_cap_issue(struct ceph_inode_info *ci, struct ceph_cap *cap, if ((issued & CEPH_CAP_FILE_SHARED) != (had & CEPH_CAP_FILE_SHARED)) { if (issued & CEPH_CAP_FILE_SHARED) atomic_inc(&ci->i_shared_gen); - if (S_ISDIR(ci->vfs_inode.i_mode)) { - dout(" marking %p NOT complete\n", &ci->vfs_inode); + if (S_ISDIR(ci->netfs.inode.i_mode)) { + dout(" marking %p NOT complete\n", &ci->netfs.inode); __ceph_dir_clear_complete(ci); } } /* Wipe saved layout if we're losing DIR_CREATE caps */ - if (S_ISDIR(ci->vfs_inode.i_mode) && (had & CEPH_CAP_DIR_CREATE) && + if (S_ISDIR(ci->netfs.inode.i_mode) && (had & CEPH_CAP_DIR_CREATE) && !(issued & CEPH_CAP_DIR_CREATE)) { ceph_put_string(rcu_dereference_raw(ci->i_cached_layout.pool_ns)); memset(&ci->i_cached_layout, 0, sizeof(ci->i_cached_layout)); @@ -771,7 +771,7 @@ static int __cap_is_valid(struct ceph_cap *cap) if (cap->cap_gen < gen || time_after_eq(jiffies, ttl)) { dout("__cap_is_valid %p cap %p issued %s " - "but STALE (gen %u vs %u)\n", &cap->ci->vfs_inode, + "but STALE (gen %u vs %u)\n", &cap->ci->netfs.inode, cap, ceph_cap_string(cap->issued), cap->cap_gen, gen); return 0; } @@ -797,7 +797,7 @@ int __ceph_caps_issued(struct ceph_inode_info *ci, int *implemented) if (!__cap_is_valid(cap)) continue; dout("__ceph_caps_issued %p cap %p issued %s\n", - &ci->vfs_inode, cap, ceph_cap_string(cap->issued)); + &ci->netfs.inode, cap, ceph_cap_string(cap->issued)); have |= cap->issued; if (implemented) *implemented |= cap->implemented; @@ -844,12 +844,12 @@ static void __touch_cap(struct ceph_cap *cap) spin_lock(&s->s_cap_lock); if (!s->s_cap_iterator) { - dout("__touch_cap %p cap %p mds%d\n", &cap->ci->vfs_inode, cap, + dout("__touch_cap %p cap %p mds%d\n", &cap->ci->netfs.inode, cap, s->s_mds); list_move_tail(&cap->session_caps, &s->s_caps); } else { dout("__touch_cap %p cap %p mds%d NOP, iterating over caps\n", - &cap->ci->vfs_inode, cap, s->s_mds); + &cap->ci->netfs.inode, cap, s->s_mds); } spin_unlock(&s->s_cap_lock); } @@ -867,7 +867,7 @@ int __ceph_caps_issued_mask(struct ceph_inode_info *ci, int mask, int touch) if ((have & mask) == mask) { dout("__ceph_caps_issued_mask ino 0x%llx snap issued %s" - " (mask %s)\n", ceph_ino(&ci->vfs_inode), + " (mask %s)\n", ceph_ino(&ci->netfs.inode), ceph_cap_string(have), ceph_cap_string(mask)); return 1; @@ -879,7 +879,7 @@ int __ceph_caps_issued_mask(struct ceph_inode_info *ci, int mask, int touch) continue; if ((cap->issued & mask) == mask) { dout("__ceph_caps_issued_mask ino 0x%llx cap %p issued %s" - " (mask %s)\n", ceph_ino(&ci->vfs_inode), cap, + " (mask %s)\n", ceph_ino(&ci->netfs.inode), cap, ceph_cap_string(cap->issued), ceph_cap_string(mask)); if (touch) @@ -891,7 +891,7 @@ int __ceph_caps_issued_mask(struct ceph_inode_info *ci, int mask, int touch) have |= cap->issued; if ((have & mask) == mask) { dout("__ceph_caps_issued_mask ino 0x%llx combo issued %s" - " (mask %s)\n", ceph_ino(&ci->vfs_inode), + " (mask %s)\n", ceph_ino(&ci->netfs.inode), ceph_cap_string(cap->issued), ceph_cap_string(mask)); if (touch) { @@ -919,7 +919,7 @@ int __ceph_caps_issued_mask(struct ceph_inode_info *ci, int mask, int touch) int __ceph_caps_issued_mask_metric(struct ceph_inode_info *ci, int mask, int touch) { - struct ceph_fs_client *fsc = ceph_sb_to_client(ci->vfs_inode.i_sb); + struct ceph_fs_client *fsc = ceph_sb_to_client(ci->netfs.inode.i_sb); int r; r = __ceph_caps_issued_mask(ci, mask, touch); @@ -950,7 +950,7 @@ int __ceph_caps_revoking_other(struct ceph_inode_info *ci, int ceph_caps_revoking(struct ceph_inode_info *ci, int mask) { - struct inode *inode = &ci->vfs_inode; + struct inode *inode = &ci->netfs.inode; int ret; spin_lock(&ci->i_ceph_lock); @@ -969,8 +969,8 @@ int __ceph_caps_used(struct ceph_inode_info *ci) if (ci->i_rd_ref) used |= CEPH_CAP_FILE_RD; if (ci->i_rdcache_ref || - (S_ISREG(ci->vfs_inode.i_mode) && - ci->vfs_inode.i_data.nrpages)) + (S_ISREG(ci->netfs.inode.i_mode) && + ci->netfs.inode.i_data.nrpages)) used |= CEPH_CAP_FILE_CACHE; if (ci->i_wr_ref) used |= CEPH_CAP_FILE_WR; @@ -993,11 +993,11 @@ int __ceph_caps_file_wanted(struct ceph_inode_info *ci) const int WR_SHIFT = ffs(CEPH_FILE_MODE_WR); const int LAZY_SHIFT = ffs(CEPH_FILE_MODE_LAZY); struct ceph_mount_options *opt = - ceph_inode_to_client(&ci->vfs_inode)->mount_options; + ceph_inode_to_client(&ci->netfs.inode)->mount_options; unsigned long used_cutoff = jiffies - opt->caps_wanted_delay_max * HZ; unsigned long idle_cutoff = jiffies - opt->caps_wanted_delay_min * HZ; - if (S_ISDIR(ci->vfs_inode.i_mode)) { + if (S_ISDIR(ci->netfs.inode.i_mode)) { int want = 0; /* use used_cutoff here, to keep dir's wanted caps longer */ @@ -1050,7 +1050,7 @@ int __ceph_caps_file_wanted(struct ceph_inode_info *ci) int __ceph_caps_wanted(struct ceph_inode_info *ci) { int w = __ceph_caps_file_wanted(ci) | __ceph_caps_used(ci); - if (S_ISDIR(ci->vfs_inode.i_mode)) { + if (S_ISDIR(ci->netfs.inode.i_mode)) { /* we want EXCL if holding caps of dir ops */ if (w & CEPH_CAP_ANY_DIR_OPS) w |= CEPH_CAP_FILE_EXCL; @@ -1116,9 +1116,9 @@ void __ceph_remove_cap(struct ceph_cap *cap, bool queue_release) lockdep_assert_held(&ci->i_ceph_lock); - dout("__ceph_remove_cap %p from %p\n", cap, &ci->vfs_inode); + dout("__ceph_remove_cap %p from %p\n", cap, &ci->netfs.inode); - mdsc = ceph_inode_to_client(&ci->vfs_inode)->mdsc; + mdsc = ceph_inode_to_client(&ci->netfs.inode)->mdsc; /* remove from inode's cap rbtree, and clear auth cap */ rb_erase(&cap->ci_node, &ci->i_caps); @@ -1169,7 +1169,7 @@ void __ceph_remove_cap(struct ceph_cap *cap, bool queue_release) * keep i_snap_realm. */ if (ci->i_wr_ref == 0 && ci->i_snap_realm) - ceph_change_snap_realm(&ci->vfs_inode, NULL); + ceph_change_snap_realm(&ci->netfs.inode, NULL); __cap_delay_cancel(mdsc, ci); } @@ -1188,11 +1188,11 @@ void ceph_remove_cap(struct ceph_cap *cap, bool queue_release) lockdep_assert_held(&ci->i_ceph_lock); - fsc = ceph_inode_to_client(&ci->vfs_inode); + fsc = ceph_inode_to_client(&ci->netfs.inode); WARN_ON_ONCE(ci->i_auth_cap == cap && !list_empty(&ci->i_dirty_item) && !fsc->blocklisted && - !ceph_inode_is_shutdown(&ci->vfs_inode)); + !ceph_inode_is_shutdown(&ci->netfs.inode)); __ceph_remove_cap(cap, queue_release); } @@ -1343,7 +1343,7 @@ static void __prep_cap(struct cap_msg_args *arg, struct ceph_cap *cap, int flushing, u64 flush_tid, u64 oldest_flush_tid) { struct ceph_inode_info *ci = cap->ci; - struct inode *inode = &ci->vfs_inode; + struct inode *inode = &ci->netfs.inode; int held, revoking; lockdep_assert_held(&ci->i_ceph_lock); @@ -1440,7 +1440,7 @@ static void __prep_cap(struct cap_msg_args *arg, struct ceph_cap *cap, static void __send_cap(struct cap_msg_args *arg, struct ceph_inode_info *ci) { struct ceph_msg *msg; - struct inode *inode = &ci->vfs_inode; + struct inode *inode = &ci->netfs.inode; msg = ceph_msg_new(CEPH_MSG_CLIENT_CAPS, CAP_MSG_SIZE, GFP_NOFS, false); if (!msg) { @@ -1528,7 +1528,7 @@ static void __ceph_flush_snaps(struct ceph_inode_info *ci, __releases(ci->i_ceph_lock) __acquires(ci->i_ceph_lock) { - struct inode *inode = &ci->vfs_inode; + struct inode *inode = &ci->netfs.inode; struct ceph_mds_client *mdsc = session->s_mdsc; struct ceph_cap_snap *capsnap; u64 oldest_flush_tid = 0; @@ -1622,7 +1622,7 @@ static void __ceph_flush_snaps(struct ceph_inode_info *ci, void ceph_flush_snaps(struct ceph_inode_info *ci, struct ceph_mds_session **psession) { - struct inode *inode = &ci->vfs_inode; + struct inode *inode = &ci->netfs.inode; struct ceph_mds_client *mdsc = ceph_inode_to_client(inode)->mdsc; struct ceph_mds_session *session = NULL; int mds; @@ -1682,8 +1682,8 @@ int __ceph_mark_dirty_caps(struct ceph_inode_info *ci, int mask, struct ceph_cap_flush **pcf) { struct ceph_mds_client *mdsc = - ceph_sb_to_client(ci->vfs_inode.i_sb)->mdsc; - struct inode *inode = &ci->vfs_inode; + ceph_sb_to_client(ci->netfs.inode.i_sb)->mdsc; + struct inode *inode = &ci->netfs.inode; int was = ci->i_dirty_caps; int dirty = 0; @@ -1696,7 +1696,7 @@ int __ceph_mark_dirty_caps(struct ceph_inode_info *ci, int mask, return 0; } - dout("__mark_dirty_caps %p %s dirty %s -> %s\n", &ci->vfs_inode, + dout("__mark_dirty_caps %p %s dirty %s -> %s\n", &ci->netfs.inode, ceph_cap_string(mask), ceph_cap_string(was), ceph_cap_string(was | mask)); ci->i_dirty_caps |= mask; @@ -1712,7 +1712,7 @@ int __ceph_mark_dirty_caps(struct ceph_inode_info *ci, int mask, ci->i_snap_realm->cached_context); } dout(" inode %p now dirty snapc %p auth cap %p\n", - &ci->vfs_inode, ci->i_head_snapc, ci->i_auth_cap); + &ci->netfs.inode, ci->i_head_snapc, ci->i_auth_cap); BUG_ON(!list_empty(&ci->i_dirty_item)); spin_lock(&mdsc->cap_dirty_lock); list_add(&ci->i_dirty_item, &session->s_cap_dirty); @@ -1875,7 +1875,7 @@ static int try_nonblocking_invalidate(struct inode *inode) bool __ceph_should_report_size(struct ceph_inode_info *ci) { - loff_t size = i_size_read(&ci->vfs_inode); + loff_t size = i_size_read(&ci->netfs.inode); /* mds will adjust max size according to the reported size */ if (ci->i_flushing_caps & CEPH_CAP_FILE_WR) return false; @@ -1900,7 +1900,7 @@ bool __ceph_should_report_size(struct ceph_inode_info *ci) void ceph_check_caps(struct ceph_inode_info *ci, int flags, struct ceph_mds_session *session) { - struct inode *inode = &ci->vfs_inode; + struct inode *inode = &ci->netfs.inode; struct ceph_mds_client *mdsc = ceph_sb_to_mdsc(inode->i_sb); struct ceph_cap *cap; u64 flush_tid, oldest_flush_tid; @@ -2467,7 +2467,7 @@ static void __kick_flushing_caps(struct ceph_mds_client *mdsc, __releases(ci->i_ceph_lock) __acquires(ci->i_ceph_lock) { - struct inode *inode = &ci->vfs_inode; + struct inode *inode = &ci->netfs.inode; struct ceph_cap *cap; struct ceph_cap_flush *cf; int ret; @@ -2560,7 +2560,7 @@ void ceph_early_kick_flushing_caps(struct ceph_mds_client *mdsc, cap = ci->i_auth_cap; if (!(cap && cap->session == session)) { pr_err("%p auth cap %p not mds%d ???\n", - &ci->vfs_inode, cap, session->s_mds); + &ci->netfs.inode, cap, session->s_mds); spin_unlock(&ci->i_ceph_lock); continue; } @@ -2610,7 +2610,7 @@ void ceph_kick_flushing_caps(struct ceph_mds_client *mdsc, cap = ci->i_auth_cap; if (!(cap && cap->session == session)) { pr_err("%p auth cap %p not mds%d ???\n", - &ci->vfs_inode, cap, session->s_mds); + &ci->netfs.inode, cap, session->s_mds); spin_unlock(&ci->i_ceph_lock); continue; } @@ -2630,7 +2630,7 @@ void ceph_kick_flushing_inode_caps(struct ceph_mds_session *session, lockdep_assert_held(&ci->i_ceph_lock); - dout("%s %p flushing %s\n", __func__, &ci->vfs_inode, + dout("%s %p flushing %s\n", __func__, &ci->netfs.inode, ceph_cap_string(ci->i_flushing_caps)); if (!list_empty(&ci->i_cap_flush_list)) { @@ -2673,10 +2673,10 @@ void ceph_take_cap_refs(struct ceph_inode_info *ci, int got, } if (got & CEPH_CAP_FILE_BUFFER) { if (ci->i_wb_ref == 0) - ihold(&ci->vfs_inode); + ihold(&ci->netfs.inode); ci->i_wb_ref++; dout("%s %p wb %d -> %d (?)\n", __func__, - &ci->vfs_inode, ci->i_wb_ref-1, ci->i_wb_ref); + &ci->netfs.inode, ci->i_wb_ref-1, ci->i_wb_ref); } } @@ -3004,7 +3004,7 @@ int ceph_get_caps(struct file *filp, int need, int want, loff_t endoff, int *got return ret; } - if (S_ISREG(ci->vfs_inode.i_mode) && + if (S_ISREG(ci->netfs.inode.i_mode) && ci->i_inline_version != CEPH_INLINE_NONE && (_got & (CEPH_CAP_FILE_CACHE|CEPH_CAP_FILE_LAZYIO)) && i_size_read(inode) > 0) { @@ -3094,7 +3094,7 @@ enum put_cap_refs_mode { static void __ceph_put_cap_refs(struct ceph_inode_info *ci, int had, enum put_cap_refs_mode mode) { - struct inode *inode = &ci->vfs_inode; + struct inode *inode = &ci->netfs.inode; int last = 0, put = 0, flushsnaps = 0, wake = 0; bool check_flushsnaps = false; @@ -3202,7 +3202,7 @@ void ceph_put_cap_refs_no_check_caps(struct ceph_inode_info *ci, int had) void ceph_put_wrbuffer_cap_refs(struct ceph_inode_info *ci, int nr, struct ceph_snap_context *snapc) { - struct inode *inode = &ci->vfs_inode; + struct inode *inode = &ci->netfs.inode; struct ceph_cap_snap *capsnap = NULL, *iter; int put = 0; bool last = false; @@ -3698,7 +3698,7 @@ static void handle_cap_flush_ack(struct inode *inode, u64 flush_tid, session->s_mds, &list_first_entry(&session->s_cap_flushing, struct ceph_inode_info, - i_flushing_item)->vfs_inode); + i_flushing_item)->netfs.inode); } } mdsc->num_cap_flushing--; @@ -4345,7 +4345,7 @@ unsigned long ceph_check_delayed_caps(struct ceph_mds_client *mdsc) break; list_del_init(&ci->i_cap_delay_list); - inode = igrab(&ci->vfs_inode); + inode = igrab(&ci->netfs.inode); if (inode) { spin_unlock(&mdsc->cap_delay_lock); dout("check_delayed_caps on %p\n", inode); @@ -4373,7 +4373,7 @@ static void flush_dirty_session_caps(struct ceph_mds_session *s) while (!list_empty(&s->s_cap_dirty)) { ci = list_first_entry(&s->s_cap_dirty, struct ceph_inode_info, i_dirty_item); - inode = &ci->vfs_inode; + inode = &ci->netfs.inode; ihold(inode); dout("flush_dirty_caps %llx.%llx\n", ceph_vinop(inode)); spin_unlock(&mdsc->cap_dirty_lock); @@ -4407,7 +4407,7 @@ void __ceph_touch_fmode(struct ceph_inode_info *ci, void ceph_get_fmode(struct ceph_inode_info *ci, int fmode, int count) { - struct ceph_mds_client *mdsc = ceph_sb_to_mdsc(ci->vfs_inode.i_sb); + struct ceph_mds_client *mdsc = ceph_sb_to_mdsc(ci->netfs.inode.i_sb); int bits = (fmode << 1) | 1; bool already_opened = false; int i; @@ -4441,7 +4441,7 @@ void ceph_get_fmode(struct ceph_inode_info *ci, int fmode, int count) */ void ceph_put_fmode(struct ceph_inode_info *ci, int fmode, int count) { - struct ceph_mds_client *mdsc = ceph_sb_to_mdsc(ci->vfs_inode.i_sb); + struct ceph_mds_client *mdsc = ceph_sb_to_mdsc(ci->netfs.inode.i_sb); int bits = (fmode << 1) | 1; bool is_closed = true; int i; @@ -4656,7 +4656,7 @@ int ceph_purge_inode_cap(struct inode *inode, struct ceph_cap *cap, bool *invali lockdep_assert_held(&ci->i_ceph_lock); dout("removing cap %p, ci is %p, inode is %p\n", - cap, ci, &ci->vfs_inode); + cap, ci, &ci->netfs.inode); is_auth = (cap == ci->i_auth_cap); __ceph_remove_cap(cap, false); diff --git a/fs/ceph/file.c b/fs/ceph/file.c index 8c8226c0feac..da59e836a06e 100644 --- a/fs/ceph/file.c +++ b/fs/ceph/file.c @@ -205,7 +205,7 @@ static int ceph_init_file_info(struct inode *inode, struct file *file, { struct ceph_inode_info *ci = ceph_inode(inode); struct ceph_mount_options *opt = - ceph_inode_to_client(&ci->vfs_inode)->mount_options; + ceph_inode_to_client(&ci->netfs.inode)->mount_options; struct ceph_file_info *fi; int ret; diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c index 5f1cc2b4ed06..650746b3ba99 100644 --- a/fs/ceph/inode.c +++ b/fs/ceph/inode.c @@ -20,9 +20,6 @@ #include "cache.h" #include <linux/ceph/decode.h> -// Temporary: netfs does disgusting things with inode pointers -#pragma GCC diagnostic ignored "-Wattribute-warning" - /* * Ceph inode operations * @@ -179,7 +176,7 @@ static struct ceph_inode_frag *__get_or_create_frag(struct ceph_inode_info *ci, rb_insert_color(&frag->node, &ci->i_fragtree); dout("get_or_create_frag added %llx.%llx frag %x\n", - ceph_vinop(&ci->vfs_inode), f); + ceph_vinop(&ci->netfs.inode), f); return frag; } @@ -460,10 +457,10 @@ struct inode *ceph_alloc_inode(struct super_block *sb) if (!ci) return NULL; - dout("alloc_inode %p\n", &ci->vfs_inode); + dout("alloc_inode %p\n", &ci->netfs.inode); /* Set parameters for the netfs library */ - netfs_i_context_init(&ci->vfs_inode, &ceph_netfs_ops); + netfs_inode_init(&ci->netfs.inode, &ceph_netfs_ops); spin_lock_init(&ci->i_ceph_lock); @@ -550,7 +547,7 @@ struct inode *ceph_alloc_inode(struct super_block *sb) INIT_WORK(&ci->i_work, ceph_inode_work); ci->i_work_mask = 0; memset(&ci->i_btime, '\0', sizeof(ci->i_btime)); - return &ci->vfs_inode; + return &ci->netfs.inode; } void ceph_free_inode(struct inode *inode) @@ -1981,7 +1978,7 @@ static void ceph_inode_work(struct work_struct *work) { struct ceph_inode_info *ci = container_of(work, struct ceph_inode_info, i_work); - struct inode *inode = &ci->vfs_inode; + struct inode *inode = &ci->netfs.inode; if (test_and_clear_bit(CEPH_I_WORK_WRITEBACK, &ci->i_work_mask)) { dout("writeback %p\n", inode); diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c index f5d110d90b77..33f517d549ce 100644 --- a/fs/ceph/mds_client.c +++ b/fs/ceph/mds_client.c @@ -1564,7 +1564,7 @@ int ceph_iterate_session_caps(struct ceph_mds_session *session, p = session->s_caps.next; while (p != &session->s_caps) { cap = list_entry(p, struct ceph_cap, session_caps); - inode = igrab(&cap->ci->vfs_inode); + inode = igrab(&cap->ci->netfs.inode); if (!inode) { p = p->next; continue; @@ -1622,7 +1622,7 @@ static int remove_session_caps_cb(struct inode *inode, struct ceph_cap *cap, int iputs; dout("removing cap %p, ci is %p, inode is %p\n", - cap, ci, &ci->vfs_inode); + cap, ci, &ci->netfs.inode); spin_lock(&ci->i_ceph_lock); iputs = ceph_purge_inode_cap(inode, cap, &invalidate); spin_unlock(&ci->i_ceph_lock); diff --git a/fs/ceph/snap.c b/fs/ceph/snap.c index 322ee5add942..864cdaa0d2bd 100644 --- a/fs/ceph/snap.c +++ b/fs/ceph/snap.c @@ -521,7 +521,7 @@ static bool has_new_snaps(struct ceph_snap_context *o, static void ceph_queue_cap_snap(struct ceph_inode_info *ci, struct ceph_cap_snap **pcapsnap) { - struct inode *inode = &ci->vfs_inode; + struct inode *inode = &ci->netfs.inode; struct ceph_snap_context *old_snapc, *new_snapc; struct ceph_cap_snap *capsnap = *pcapsnap; struct ceph_buffer *old_blob = NULL; @@ -652,7 +652,7 @@ update_snapc: int __ceph_finish_cap_snap(struct ceph_inode_info *ci, struct ceph_cap_snap *capsnap) { - struct inode *inode = &ci->vfs_inode; + struct inode *inode = &ci->netfs.inode; struct ceph_mds_client *mdsc = ceph_sb_to_mdsc(inode->i_sb); BUG_ON(capsnap->writing); @@ -712,7 +712,7 @@ static void queue_realm_cap_snaps(struct ceph_snap_realm *realm) spin_lock(&realm->inodes_with_caps_lock); list_for_each_entry(ci, &realm->inodes_with_caps, i_snap_realm_item) { - struct inode *inode = igrab(&ci->vfs_inode); + struct inode *inode = igrab(&ci->netfs.inode); if (!inode) continue; spin_unlock(&realm->inodes_with_caps_lock); @@ -904,7 +904,7 @@ static void flush_snaps(struct ceph_mds_client *mdsc) while (!list_empty(&mdsc->snap_flush_list)) { ci = list_first_entry(&mdsc->snap_flush_list, struct ceph_inode_info, i_snap_flush_item); - inode = &ci->vfs_inode; + inode = &ci->netfs.inode; ihold(inode); spin_unlock(&mdsc->snap_flush_lock); ceph_flush_snaps(ci, &session); diff --git a/fs/ceph/super.c b/fs/ceph/super.c index b73b4f75462c..40140805bdcf 100644 --- a/fs/ceph/super.c +++ b/fs/ceph/super.c @@ -876,7 +876,7 @@ mempool_t *ceph_wb_pagevec_pool; static void ceph_inode_init_once(void *foo) { struct ceph_inode_info *ci = foo; - inode_init_once(&ci->vfs_inode); + inode_init_once(&ci->netfs.inode); } static int __init init_caches(void) diff --git a/fs/ceph/super.h b/fs/ceph/super.h index dd7dac0f984a..f59dac66955b 100644 --- a/fs/ceph/super.h +++ b/fs/ceph/super.h @@ -316,11 +316,7 @@ struct ceph_inode_xattrs_info { * Ceph inode. */ struct ceph_inode_info { - struct { - /* These must be contiguous */ - struct inode vfs_inode; - struct netfs_i_context netfs_ctx; /* Netfslib context */ - }; + struct netfs_inode netfs; /* Netfslib context and vfs inode */ struct ceph_vino i_vino; /* ceph ino + snap */ spinlock_t i_ceph_lock; @@ -436,7 +432,7 @@ struct ceph_inode_info { static inline struct ceph_inode_info * ceph_inode(const struct inode *inode) { - return container_of(inode, struct ceph_inode_info, vfs_inode); + return container_of(inode, struct ceph_inode_info, netfs.inode); } static inline struct ceph_fs_client * @@ -1316,7 +1312,7 @@ static inline void __ceph_update_quota(struct ceph_inode_info *ci, has_quota = __ceph_has_quota(ci, QUOTA_GET_ANY); if (had_quota != has_quota) - ceph_adjust_quota_realms_count(&ci->vfs_inode, has_quota); + ceph_adjust_quota_realms_count(&ci->netfs.inode, has_quota); } extern void ceph_handle_quota(struct ceph_mds_client *mdsc, diff --git a/fs/ceph/xattr.c b/fs/ceph/xattr.c index 8c2dc2c762a4..f141f5246163 100644 --- a/fs/ceph/xattr.c +++ b/fs/ceph/xattr.c @@ -57,7 +57,7 @@ static bool ceph_vxattrcb_layout_exists(struct ceph_inode_info *ci) static ssize_t ceph_vxattrcb_layout(struct ceph_inode_info *ci, char *val, size_t size) { - struct ceph_fs_client *fsc = ceph_sb_to_client(ci->vfs_inode.i_sb); + struct ceph_fs_client *fsc = ceph_sb_to_client(ci->netfs.inode.i_sb); struct ceph_osd_client *osdc = &fsc->client->osdc; struct ceph_string *pool_ns; s64 pool = ci->i_layout.pool_id; @@ -69,7 +69,7 @@ static ssize_t ceph_vxattrcb_layout(struct ceph_inode_info *ci, char *val, pool_ns = ceph_try_get_string(ci->i_layout.pool_ns); - dout("ceph_vxattrcb_layout %p\n", &ci->vfs_inode); + dout("ceph_vxattrcb_layout %p\n", &ci->netfs.inode); down_read(&osdc->lock); pool_name = ceph_pg_pool_name_by_id(osdc->osdmap, pool); if (pool_name) { @@ -161,7 +161,7 @@ static ssize_t ceph_vxattrcb_layout_pool(struct ceph_inode_info *ci, char *val, size_t size) { ssize_t ret; - struct ceph_fs_client *fsc = ceph_sb_to_client(ci->vfs_inode.i_sb); + struct ceph_fs_client *fsc = ceph_sb_to_client(ci->netfs.inode.i_sb); struct ceph_osd_client *osdc = &fsc->client->osdc; s64 pool = ci->i_layout.pool_id; const char *pool_name; @@ -313,7 +313,7 @@ static ssize_t ceph_vxattrcb_snap_btime(struct ceph_inode_info *ci, char *val, static ssize_t ceph_vxattrcb_cluster_fsid(struct ceph_inode_info *ci, char *val, size_t size) { - struct ceph_fs_client *fsc = ceph_sb_to_client(ci->vfs_inode.i_sb); + struct ceph_fs_client *fsc = ceph_sb_to_client(ci->netfs.inode.i_sb); return ceph_fmt_xattr(val, size, "%pU", &fsc->client->fsid); } @@ -321,7 +321,7 @@ static ssize_t ceph_vxattrcb_cluster_fsid(struct ceph_inode_info *ci, static ssize_t ceph_vxattrcb_client_id(struct ceph_inode_info *ci, char *val, size_t size) { - struct ceph_fs_client *fsc = ceph_sb_to_client(ci->vfs_inode.i_sb); + struct ceph_fs_client *fsc = ceph_sb_to_client(ci->netfs.inode.i_sb); return ceph_fmt_xattr(val, size, "client%lld", ceph_client_gid(fsc->client)); @@ -629,7 +629,7 @@ static int __set_xattr(struct ceph_inode_info *ci, } dout("__set_xattr_val added %llx.%llx xattr %p %.*s=%.*s\n", - ceph_vinop(&ci->vfs_inode), xattr, name_len, name, val_len, val); + ceph_vinop(&ci->netfs.inode), xattr, name_len, name, val_len, val); return 0; } @@ -871,7 +871,7 @@ struct ceph_buffer *__ceph_build_xattrs_blob(struct ceph_inode_info *ci) struct ceph_buffer *old_blob = NULL; void *dest; - dout("__build_xattrs_blob %p\n", &ci->vfs_inode); + dout("__build_xattrs_blob %p\n", &ci->netfs.inode); if (ci->i_xattrs.dirty) { int need = __get_required_blob_size(ci, 0, 0); diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c index 12c872800326..c85d9a378325 100644 --- a/fs/cifs/cifsfs.c +++ b/fs/cifs/cifsfs.c @@ -377,7 +377,7 @@ cifs_alloc_inode(struct super_block *sb) cifs_inode->flags = 0; spin_lock_init(&cifs_inode->writers_lock); cifs_inode->writers = 0; - cifs_inode->vfs_inode.i_blkbits = 14; /* 2**14 = CIFS_MAX_MSGSIZE */ + cifs_inode->netfs.inode.i_blkbits = 14; /* 2**14 = CIFS_MAX_MSGSIZE */ cifs_inode->server_eof = 0; cifs_inode->uniqueid = 0; cifs_inode->createtime = 0; @@ -389,12 +389,12 @@ cifs_alloc_inode(struct super_block *sb) * Can not set i_flags here - they get immediately overwritten to zero * by the VFS. */ - /* cifs_inode->vfs_inode.i_flags = S_NOATIME | S_NOCMTIME; */ + /* cifs_inode->netfs.inode.i_flags = S_NOATIME | S_NOCMTIME; */ INIT_LIST_HEAD(&cifs_inode->openFileList); INIT_LIST_HEAD(&cifs_inode->llist); INIT_LIST_HEAD(&cifs_inode->deferred_closes); spin_lock_init(&cifs_inode->deferred_lock); - return &cifs_inode->vfs_inode; + return &cifs_inode->netfs.inode; } static void @@ -1418,7 +1418,7 @@ cifs_init_once(void *inode) { struct cifsInodeInfo *cifsi = inode; - inode_init_once(&cifsi->vfs_inode); + inode_init_once(&cifsi->netfs.inode); init_rwsem(&cifsi->lock_sem); } diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h index f873379066c7..e7737166e5b8 100644 --- a/fs/cifs/cifsglob.h +++ b/fs/cifs/cifsglob.h @@ -1479,20 +1479,16 @@ void cifsFileInfo_put(struct cifsFileInfo *cifs_file); #define CIFS_CACHE_RW_FLG (CIFS_CACHE_READ_FLG | CIFS_CACHE_WRITE_FLG) #define CIFS_CACHE_RHW_FLG (CIFS_CACHE_RW_FLG | CIFS_CACHE_HANDLE_FLG) -#define CIFS_CACHE_READ(cinode) ((cinode->oplock & CIFS_CACHE_READ_FLG) || (CIFS_SB(cinode->vfs_inode.i_sb)->mnt_cifs_flags & CIFS_MOUNT_RO_CACHE)) +#define CIFS_CACHE_READ(cinode) ((cinode->oplock & CIFS_CACHE_READ_FLG) || (CIFS_SB(cinode->netfs.inode.i_sb)->mnt_cifs_flags & CIFS_MOUNT_RO_CACHE)) #define CIFS_CACHE_HANDLE(cinode) (cinode->oplock & CIFS_CACHE_HANDLE_FLG) -#define CIFS_CACHE_WRITE(cinode) ((cinode->oplock & CIFS_CACHE_WRITE_FLG) || (CIFS_SB(cinode->vfs_inode.i_sb)->mnt_cifs_flags & CIFS_MOUNT_RW_CACHE)) +#define CIFS_CACHE_WRITE(cinode) ((cinode->oplock & CIFS_CACHE_WRITE_FLG) || (CIFS_SB(cinode->netfs.inode.i_sb)->mnt_cifs_flags & CIFS_MOUNT_RW_CACHE)) /* * One of these for each file inode */ struct cifsInodeInfo { - struct { - /* These must be contiguous */ - struct inode vfs_inode; /* the VFS's inode record */ - struct netfs_i_context netfs_ctx; /* Netfslib context */ - }; + struct netfs_inode netfs; /* Netfslib context and vfs inode */ bool can_cache_brlcks; struct list_head llist; /* locks helb by this inode */ /* @@ -1531,7 +1527,7 @@ struct cifsInodeInfo { static inline struct cifsInodeInfo * CIFS_I(struct inode *inode) { - return container_of(inode, struct cifsInodeInfo, vfs_inode); + return container_of(inode, struct cifsInodeInfo, netfs.inode); } static inline struct cifs_sb_info * diff --git a/fs/cifs/file.c b/fs/cifs/file.c index 1618e0537d58..e64cda7a7610 100644 --- a/fs/cifs/file.c +++ b/fs/cifs/file.c @@ -2004,7 +2004,7 @@ struct cifsFileInfo *find_readable_file(struct cifsInodeInfo *cifs_inode, bool fsuid_only) { struct cifsFileInfo *open_file = NULL; - struct cifs_sb_info *cifs_sb = CIFS_SB(cifs_inode->vfs_inode.i_sb); + struct cifs_sb_info *cifs_sb = CIFS_SB(cifs_inode->netfs.inode.i_sb); /* only filter by fsuid on multiuser mounts */ if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MULTIUSER)) @@ -2060,7 +2060,7 @@ cifs_get_writable_file(struct cifsInodeInfo *cifs_inode, int flags, return rc; } - cifs_sb = CIFS_SB(cifs_inode->vfs_inode.i_sb); + cifs_sb = CIFS_SB(cifs_inode->netfs.inode.i_sb); /* only filter by fsuid on multiuser mounts */ if (!(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_MULTIUSER)) @@ -4669,14 +4669,14 @@ bool is_size_safe_to_change(struct cifsInodeInfo *cifsInode, __u64 end_of_file) /* This inode is open for write at least once */ struct cifs_sb_info *cifs_sb; - cifs_sb = CIFS_SB(cifsInode->vfs_inode.i_sb); + cifs_sb = CIFS_SB(cifsInode->netfs.inode.i_sb); if (cifs_sb->mnt_cifs_flags & CIFS_MOUNT_DIRECT_IO) { /* since no page cache to corrupt on directio we can change size safely */ return true; } - if (i_size_read(&cifsInode->vfs_inode) < end_of_file) + if (i_size_read(&cifsInode->netfs.inode) < end_of_file) return true; return false; diff --git a/fs/cifs/fscache.c b/fs/cifs/fscache.c index a638b29e9062..23ef56f55ce5 100644 --- a/fs/cifs/fscache.c +++ b/fs/cifs/fscache.c @@ -101,13 +101,13 @@ void cifs_fscache_get_inode_cookie(struct inode *inode) struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb); - cifs_fscache_fill_coherency(&cifsi->vfs_inode, &cd); + cifs_fscache_fill_coherency(&cifsi->netfs.inode, &cd); - cifsi->netfs_ctx.cache = + cifsi->netfs.cache = fscache_acquire_cookie(tcon->fscache, 0, &cifsi->uniqueid, sizeof(cifsi->uniqueid), &cd, sizeof(cd), - i_size_read(&cifsi->vfs_inode)); + i_size_read(&cifsi->netfs.inode)); } void cifs_fscache_unuse_inode_cookie(struct inode *inode, bool update) @@ -131,7 +131,7 @@ void cifs_fscache_release_inode_cookie(struct inode *inode) if (cookie) { cifs_dbg(FYI, "%s: (0x%p)\n", __func__, cookie); fscache_relinquish_cookie(cookie, false); - cifsi->netfs_ctx.cache = NULL; + cifsi->netfs.cache = NULL; } } diff --git a/fs/cifs/fscache.h b/fs/cifs/fscache.h index 52355c0912ae..ab9a51d0125c 100644 --- a/fs/cifs/fscache.h +++ b/fs/cifs/fscache.h @@ -52,10 +52,10 @@ void cifs_fscache_fill_coherency(struct inode *inode, struct cifsInodeInfo *cifsi = CIFS_I(inode); memset(cd, 0, sizeof(*cd)); - cd->last_write_time_sec = cpu_to_le64(cifsi->vfs_inode.i_mtime.tv_sec); - cd->last_write_time_nsec = cpu_to_le32(cifsi->vfs_inode.i_mtime.tv_nsec); - cd->last_change_time_sec = cpu_to_le64(cifsi->vfs_inode.i_ctime.tv_sec); - cd->last_change_time_nsec = cpu_to_le32(cifsi->vfs_inode.i_ctime.tv_nsec); + cd->last_write_time_sec = cpu_to_le64(cifsi->netfs.inode.i_mtime.tv_sec); + cd->last_write_time_nsec = cpu_to_le32(cifsi->netfs.inode.i_mtime.tv_nsec); + cd->last_change_time_sec = cpu_to_le64(cifsi->netfs.inode.i_ctime.tv_sec); + cd->last_change_time_nsec = cpu_to_le32(cifsi->netfs.inode.i_ctime.tv_nsec); } diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c index 2f9e7d2f81b6..81da81e18553 100644 --- a/fs/cifs/inode.c +++ b/fs/cifs/inode.c @@ -115,7 +115,7 @@ cifs_revalidate_cache(struct inode *inode, struct cifs_fattr *fattr) __func__, cifs_i->uniqueid); set_bit(CIFS_INO_INVALID_MAPPING, &cifs_i->flags); /* Invalidate fscache cookie */ - cifs_fscache_fill_coherency(&cifs_i->vfs_inode, &cd); + cifs_fscache_fill_coherency(&cifs_i->netfs.inode, &cd); fscache_invalidate(cifs_inode_cookie(inode), &cd, i_size_read(inode), 0); } @@ -2499,7 +2499,7 @@ int cifs_fiemap(struct inode *inode, struct fiemap_extent_info *fei, u64 start, u64 len) { struct cifsInodeInfo *cifs_i = CIFS_I(inode); - struct cifs_sb_info *cifs_sb = CIFS_SB(cifs_i->vfs_inode.i_sb); + struct cifs_sb_info *cifs_sb = CIFS_SB(cifs_i->netfs.inode.i_sb); struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb); struct TCP_Server_Info *server = tcon->ses->server; struct cifsFileInfo *cfile; diff --git a/fs/cifs/misc.c b/fs/cifs/misc.c index 35962a1a23b9..cbc3b433f502 100644 --- a/fs/cifs/misc.c +++ b/fs/cifs/misc.c @@ -537,11 +537,11 @@ void cifs_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock) if (oplock == OPLOCK_EXCLUSIVE) { cinode->oplock = CIFS_CACHE_WRITE_FLG | CIFS_CACHE_READ_FLG; cifs_dbg(FYI, "Exclusive Oplock granted on inode %p\n", - &cinode->vfs_inode); + &cinode->netfs.inode); } else if (oplock == OPLOCK_READ) { cinode->oplock = CIFS_CACHE_READ_FLG; cifs_dbg(FYI, "Level II Oplock granted on inode %p\n", - &cinode->vfs_inode); + &cinode->netfs.inode); } else cinode->oplock = 0; } diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c index 98a76fa791c0..8543cafdfd34 100644 --- a/fs/cifs/smb2ops.c +++ b/fs/cifs/smb2ops.c @@ -4260,15 +4260,15 @@ smb2_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock, if (oplock == SMB2_OPLOCK_LEVEL_BATCH) { cinode->oplock = CIFS_CACHE_RHW_FLG; cifs_dbg(FYI, "Batch Oplock granted on inode %p\n", - &cinode->vfs_inode); + &cinode->netfs.inode); } else if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE) { cinode->oplock = CIFS_CACHE_RW_FLG; cifs_dbg(FYI, "Exclusive Oplock granted on inode %p\n", - &cinode->vfs_inode); + &cinode->netfs.inode); } else if (oplock == SMB2_OPLOCK_LEVEL_II) { cinode->oplock = CIFS_CACHE_READ_FLG; cifs_dbg(FYI, "Level II Oplock granted on inode %p\n", - &cinode->vfs_inode); + &cinode->netfs.inode); } else cinode->oplock = 0; } @@ -4307,7 +4307,7 @@ smb21_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock, cinode->oplock = new_oplock; cifs_dbg(FYI, "%s Lease granted on inode %p\n", message, - &cinode->vfs_inode); + &cinode->netfs.inode); } static void diff --git a/fs/ext2/inode.c b/fs/ext2/inode.c index 360ce3604a2d..e6b932219803 100644 --- a/fs/ext2/inode.c +++ b/fs/ext2/inode.c @@ -1549,7 +1549,7 @@ static int __ext2_write_inode(struct inode *inode, int do_sync) if (IS_ERR(raw_inode)) return -EIO; - /* For fields not not tracking in the in-memory inode, + /* For fields not tracking in the in-memory inode, * initialise them to zero for new inodes. */ if (ei->i_state & EXT2_STATE_NEW) memset(raw_inode, 0, EXT2_SB(sb)->s_inode_size); diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c index a21d8f1a56d1..05221366a16d 100644 --- a/fs/fs-writeback.c +++ b/fs/fs-writeback.c @@ -120,6 +120,7 @@ static bool inode_io_list_move_locked(struct inode *inode, struct list_head *head) { assert_spin_locked(&wb->list_lock); + assert_spin_locked(&inode->i_lock); list_move(&inode->i_io_list, head); @@ -1365,9 +1366,9 @@ static int move_expired_inodes(struct list_head *delaying_queue, inode = wb_inode(delaying_queue->prev); if (inode_dirtied_after(inode, dirtied_before)) break; + spin_lock(&inode->i_lock); list_move(&inode->i_io_list, &tmp); moved++; - spin_lock(&inode->i_lock); inode->i_state |= I_SYNC_QUEUED; spin_unlock(&inode->i_lock); if (sb_is_blkdev_sb(inode->i_sb)) @@ -1383,7 +1384,12 @@ static int move_expired_inodes(struct list_head *delaying_queue, goto out; } - /* Move inodes from one superblock together */ + /* + * Although inode's i_io_list is moved from 'tmp' to 'dispatch_queue', + * we don't take inode->i_lock here because it is just a pointless overhead. + * Inode is already marked as I_SYNC_QUEUED so writeback list handling is + * fully under our control. + */ while (!list_empty(&tmp)) { sb = wb_inode(tmp.prev)->i_sb; list_for_each_prev_safe(pos, node, &tmp) { @@ -1826,8 +1832,8 @@ static long writeback_sb_inodes(struct super_block *sb, * We'll have another go at writing back this inode * when we completed a full scan of b_io. */ - spin_unlock(&inode->i_lock); requeue_io(inode, wb); + spin_unlock(&inode->i_lock); trace_writeback_sb_inodes_requeue(inode); continue; } @@ -2358,6 +2364,7 @@ void __mark_inode_dirty(struct inode *inode, int flags) { struct super_block *sb = inode->i_sb; int dirtytime = 0; + struct bdi_writeback *wb = NULL; trace_writeback_mark_inode_dirty(inode, flags); @@ -2410,13 +2417,24 @@ void __mark_inode_dirty(struct inode *inode, int flags) inode->i_state |= flags; /* + * Grab inode's wb early because it requires dropping i_lock and we + * need to make sure following checks happen atomically with dirty + * list handling so that we don't move inodes under flush worker's + * hands. + */ + if (!was_dirty) { + wb = locked_inode_to_wb_and_lock_list(inode); + spin_lock(&inode->i_lock); + } + + /* * If the inode is queued for writeback by flush worker, just * update its dirty state. Once the flush worker is done with * the inode it will place it on the appropriate superblock * list, based upon its state. */ if (inode->i_state & I_SYNC_QUEUED) - goto out_unlock_inode; + goto out_unlock; /* * Only add valid (hashed) inodes to the superblock's @@ -2424,22 +2442,19 @@ void __mark_inode_dirty(struct inode *inode, int flags) */ if (!S_ISBLK(inode->i_mode)) { if (inode_unhashed(inode)) - goto out_unlock_inode; + goto out_unlock; } if (inode->i_state & I_FREEING) - goto out_unlock_inode; + goto out_unlock; /* * If the inode was already on b_dirty/b_io/b_more_io, don't * reposition it (that would break b_dirty time-ordering). */ if (!was_dirty) { - struct bdi_writeback *wb; struct list_head *dirty_list; bool wakeup_bdi = false; - wb = locked_inode_to_wb_and_lock_list(inode); - inode->dirtied_when = jiffies; if (dirtytime) inode->dirtied_time_when = jiffies; @@ -2453,6 +2468,7 @@ void __mark_inode_dirty(struct inode *inode, int flags) dirty_list); spin_unlock(&wb->list_lock); + spin_unlock(&inode->i_lock); trace_writeback_dirty_inode_enqueue(inode); /* @@ -2467,6 +2483,9 @@ void __mark_inode_dirty(struct inode *inode, int flags) return; } } +out_unlock: + if (wb) + spin_unlock(&wb->list_lock); out_unlock_inode: spin_unlock(&inode->i_lock); } diff --git a/fs/inode.c b/fs/inode.c index 9d9b422504d1..bd4da9c5207e 100644 --- a/fs/inode.c +++ b/fs/inode.c @@ -27,7 +27,7 @@ * Inode locking rules: * * inode->i_lock protects: - * inode->i_state, inode->i_hash, __iget() + * inode->i_state, inode->i_hash, __iget(), inode->i_io_list * Inode LRU list locks protect: * inode->i_sb->s_inode_lru, inode->i_lru * inode->i_sb->s_inode_list_lock protects: diff --git a/fs/netfs/buffered_read.c b/fs/netfs/buffered_read.c index 8742d22dfd2b..d37e012386f3 100644 --- a/fs/netfs/buffered_read.c +++ b/fs/netfs/buffered_read.c @@ -155,7 +155,7 @@ static void netfs_rreq_expand(struct netfs_io_request *rreq, void netfs_readahead(struct readahead_control *ractl) { struct netfs_io_request *rreq; - struct netfs_i_context *ctx = netfs_i_context(ractl->mapping->host); + struct netfs_inode *ctx = netfs_inode(ractl->mapping->host); int ret; _enter("%lx,%x", readahead_index(ractl), readahead_count(ractl)); @@ -215,7 +215,7 @@ int netfs_read_folio(struct file *file, struct folio *folio) { struct address_space *mapping = folio_file_mapping(folio); struct netfs_io_request *rreq; - struct netfs_i_context *ctx = netfs_i_context(mapping->host); + struct netfs_inode *ctx = netfs_inode(mapping->host); int ret; _enter("%lx", folio_index(folio)); @@ -331,7 +331,7 @@ int netfs_write_begin(struct file *file, struct address_space *mapping, void **_fsdata) { struct netfs_io_request *rreq; - struct netfs_i_context *ctx = netfs_i_context(file_inode(file )); + struct netfs_inode *ctx = netfs_inode(file_inode(file )); struct folio *folio; unsigned int fgp_flags = FGP_LOCK | FGP_WRITE | FGP_CREAT | FGP_STABLE; pgoff_t index = pos >> PAGE_SHIFT; diff --git a/fs/netfs/internal.h b/fs/netfs/internal.h index b7b0e3d18d9e..43fac1b14e40 100644 --- a/fs/netfs/internal.h +++ b/fs/netfs/internal.h @@ -91,7 +91,7 @@ static inline void netfs_stat_d(atomic_t *stat) /* * Miscellaneous functions. */ -static inline bool netfs_is_cache_enabled(struct netfs_i_context *ctx) +static inline bool netfs_is_cache_enabled(struct netfs_inode *ctx) { #if IS_ENABLED(CONFIG_FSCACHE) struct fscache_cookie *cookie = ctx->cache; diff --git a/fs/netfs/objects.c b/fs/netfs/objects.c index e86107b30ba4..c6afa605b63b 100644 --- a/fs/netfs/objects.c +++ b/fs/netfs/objects.c @@ -18,7 +18,7 @@ struct netfs_io_request *netfs_alloc_request(struct address_space *mapping, { static atomic_t debug_ids; struct inode *inode = file ? file_inode(file) : mapping->host; - struct netfs_i_context *ctx = netfs_i_context(inode); + struct netfs_inode *ctx = netfs_inode(inode); struct netfs_io_request *rreq; int ret; diff --git a/fs/quota/dquot.c b/fs/quota/dquot.c index a74aef99bd3d..09d1307959d0 100644 --- a/fs/quota/dquot.c +++ b/fs/quota/dquot.c @@ -79,6 +79,7 @@ #include <linux/capability.h> #include <linux/quotaops.h> #include <linux/blkdev.h> +#include <linux/sched/mm.h> #include "../internal.h" /* ugh */ #include <linux/uaccess.h> @@ -425,9 +426,11 @@ EXPORT_SYMBOL(mark_info_dirty); int dquot_acquire(struct dquot *dquot) { int ret = 0, ret2 = 0; + unsigned int memalloc; struct quota_info *dqopt = sb_dqopt(dquot->dq_sb); mutex_lock(&dquot->dq_lock); + memalloc = memalloc_nofs_save(); if (!test_bit(DQ_READ_B, &dquot->dq_flags)) { ret = dqopt->ops[dquot->dq_id.type]->read_dqblk(dquot); if (ret < 0) @@ -458,6 +461,7 @@ int dquot_acquire(struct dquot *dquot) smp_mb__before_atomic(); set_bit(DQ_ACTIVE_B, &dquot->dq_flags); out_iolock: + memalloc_nofs_restore(memalloc); mutex_unlock(&dquot->dq_lock); return ret; } @@ -469,9 +473,11 @@ EXPORT_SYMBOL(dquot_acquire); int dquot_commit(struct dquot *dquot) { int ret = 0; + unsigned int memalloc; struct quota_info *dqopt = sb_dqopt(dquot->dq_sb); mutex_lock(&dquot->dq_lock); + memalloc = memalloc_nofs_save(); if (!clear_dquot_dirty(dquot)) goto out_lock; /* Inactive dquot can be only if there was error during read/init @@ -481,6 +487,7 @@ int dquot_commit(struct dquot *dquot) else ret = -EIO; out_lock: + memalloc_nofs_restore(memalloc); mutex_unlock(&dquot->dq_lock); return ret; } @@ -492,9 +499,11 @@ EXPORT_SYMBOL(dquot_commit); int dquot_release(struct dquot *dquot) { int ret = 0, ret2 = 0; + unsigned int memalloc; struct quota_info *dqopt = sb_dqopt(dquot->dq_sb); mutex_lock(&dquot->dq_lock); + memalloc = memalloc_nofs_save(); /* Check whether we are not racing with some other dqget() */ if (dquot_is_busy(dquot)) goto out_dqlock; @@ -510,6 +519,7 @@ int dquot_release(struct dquot *dquot) } clear_bit(DQ_ACTIVE_B, &dquot->dq_flags); out_dqlock: + memalloc_nofs_restore(memalloc); mutex_unlock(&dquot->dq_lock); return ret; } diff --git a/include/asm-generic/Kbuild b/include/asm-generic/Kbuild index 302506bbc2a4..8e47d483b524 100644 --- a/include/asm-generic/Kbuild +++ b/include/asm-generic/Kbuild @@ -44,6 +44,7 @@ mandatory-y += msi.h mandatory-y += pci.h mandatory-y += percpu.h mandatory-y += pgalloc.h +mandatory-y += platform-feature.h mandatory-y += preempt.h mandatory-y += rwonce.h mandatory-y += sections.h diff --git a/include/asm-generic/platform-feature.h b/include/asm-generic/platform-feature.h new file mode 100644 index 000000000000..4b0af3d51588 --- /dev/null +++ b/include/asm-generic/platform-feature.h @@ -0,0 +1,8 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _ASM_GENERIC_PLATFORM_FEATURE_H +#define _ASM_GENERIC_PLATFORM_FEATURE_H + +/* Number of arch specific feature flags. */ +#define PLATFORM_ARCH_FEAT_N 0 + +#endif /* _ASM_GENERIC_PLATFORM_FEATURE_H */ diff --git a/include/linux/netfs.h b/include/linux/netfs.h index 77fa6a61706a..6dbb4c9ce50d 100644 --- a/include/linux/netfs.h +++ b/include/linux/netfs.h @@ -119,9 +119,10 @@ typedef void (*netfs_io_terminated_t)(void *priv, ssize_t transferred_or_error, bool was_async); /* - * Per-inode description. This must be directly after the inode struct. + * Per-inode context. This wraps the VFS inode. */ -struct netfs_i_context { +struct netfs_inode { + struct inode inode; /* The VFS inode */ const struct netfs_request_ops *ops; #if IS_ENABLED(CONFIG_FSCACHE) struct fscache_cookie *cache; @@ -256,7 +257,7 @@ struct netfs_cache_ops { * boundary as appropriate. */ enum netfs_io_source (*prepare_read)(struct netfs_io_subrequest *subreq, - loff_t i_size); + loff_t i_size); /* Prepare a write operation, working out what part of the write we can * actually do. @@ -288,45 +289,35 @@ extern void netfs_put_subrequest(struct netfs_io_subrequest *subreq, extern void netfs_stats_show(struct seq_file *); /** - * netfs_i_context - Get the netfs inode context from the inode + * netfs_inode - Get the netfs inode context from the inode * @inode: The inode to query * * Get the netfs lib inode context from the network filesystem's inode. The * context struct is expected to directly follow on from the VFS inode struct. */ -static inline struct netfs_i_context *netfs_i_context(struct inode *inode) +static inline struct netfs_inode *netfs_inode(struct inode *inode) { - return (void *)inode + sizeof(*inode); + return container_of(inode, struct netfs_inode, inode); } /** - * netfs_inode - Get the netfs inode from the inode context - * @ctx: The context to query - * - * Get the netfs inode from the netfs library's inode context. The VFS inode - * is expected to directly precede the context struct. - */ -static inline struct inode *netfs_inode(struct netfs_i_context *ctx) -{ - return (void *)ctx - sizeof(struct inode); -} - -/** - * netfs_i_context_init - Initialise a netfs lib context + * netfs_inode_init - Initialise a netfslib inode context * @inode: The inode with which the context is associated * @ops: The netfs's operations list * * Initialise the netfs library context struct. This is expected to follow on * directly from the VFS inode struct. */ -static inline void netfs_i_context_init(struct inode *inode, - const struct netfs_request_ops *ops) +static inline void netfs_inode_init(struct inode *inode, + const struct netfs_request_ops *ops) { - struct netfs_i_context *ctx = netfs_i_context(inode); + struct netfs_inode *ctx = netfs_inode(inode); - memset(ctx, 0, sizeof(*ctx)); ctx->ops = ops; ctx->remote_i_size = i_size_read(inode); +#if IS_ENABLED(CONFIG_FSCACHE) + ctx->cache = NULL; +#endif } /** @@ -338,7 +329,7 @@ static inline void netfs_i_context_init(struct inode *inode, */ static inline void netfs_resize_file(struct inode *inode, loff_t new_i_size) { - struct netfs_i_context *ctx = netfs_i_context(inode); + struct netfs_inode *ctx = netfs_inode(inode); ctx->remote_i_size = new_i_size; } @@ -352,7 +343,7 @@ static inline void netfs_resize_file(struct inode *inode, loff_t new_i_size) static inline struct fscache_cookie *netfs_i_cookie(struct inode *inode) { #if IS_ENABLED(CONFIG_FSCACHE) - struct netfs_i_context *ctx = netfs_i_context(inode); + struct netfs_inode *ctx = netfs_inode(inode); return ctx->cache; #else return NULL; diff --git a/include/linux/platform-feature.h b/include/linux/platform-feature.h new file mode 100644 index 000000000000..b2f48be999fa --- /dev/null +++ b/include/linux/platform-feature.h @@ -0,0 +1,19 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _PLATFORM_FEATURE_H +#define _PLATFORM_FEATURE_H + +#include <linux/bitops.h> +#include <asm/platform-feature.h> + +/* The platform features are starting with the architecture specific ones. */ + +/* Used to enable platform specific DMA handling for virtio devices. */ +#define PLATFORM_VIRTIO_RESTRICTED_MEM_ACCESS (0 + PLATFORM_ARCH_FEAT_N) + +#define PLATFORM_FEAT_N (1 + PLATFORM_ARCH_FEAT_N) + +void platform_set(unsigned int feature); +void platform_clear(unsigned int feature); +bool platform_has(unsigned int feature); + +#endif /* _PLATFORM_FEATURE_H */ diff --git a/include/linux/virtio_config.h b/include/linux/virtio_config.h index 9a36051ceb76..49c7c32815f1 100644 --- a/include/linux/virtio_config.h +++ b/include/linux/virtio_config.h @@ -604,13 +604,4 @@ static inline void virtio_cwrite64(struct virtio_device *vdev, _r; \ }) -#ifdef CONFIG_ARCH_HAS_RESTRICTED_VIRTIO_MEMORY_ACCESS -int arch_has_restricted_virtio_memory_access(void); -#else -static inline int arch_has_restricted_virtio_memory_access(void) -{ - return 0; -} -#endif /* CONFIG_ARCH_HAS_RESTRICTED_VIRTIO_MEMORY_ACCESS */ - #endif /* _LINUX_VIRTIO_CONFIG_H */ diff --git a/include/xen/arm/xen-ops.h b/include/xen/arm/xen-ops.h new file mode 100644 index 000000000000..b0766a660338 --- /dev/null +++ b/include/xen/arm/xen-ops.h @@ -0,0 +1,18 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _ASM_ARM_XEN_OPS_H +#define _ASM_ARM_XEN_OPS_H + +#include <xen/swiotlb-xen.h> +#include <xen/xen-ops.h> + +static inline void xen_setup_dma_ops(struct device *dev) +{ +#ifdef CONFIG_XEN + if (xen_is_grant_dma_device(dev)) + xen_grant_setup_dma_ops(dev); + else if (xen_swiotlb_detect()) + dev->dma_ops = &xen_swiotlb_dma_ops; +#endif +} + +#endif /* _ASM_ARM_XEN_OPS_H */ diff --git a/include/xen/grant_table.h b/include/xen/grant_table.h index 527c9907f99c..e279be353e3f 100644 --- a/include/xen/grant_table.h +++ b/include/xen/grant_table.h @@ -127,10 +127,14 @@ int gnttab_try_end_foreign_access(grant_ref_t ref); */ int gnttab_alloc_grant_references(u16 count, grant_ref_t *pprivate_head); +int gnttab_alloc_grant_reference_seq(unsigned int count, grant_ref_t *first); + void gnttab_free_grant_reference(grant_ref_t ref); void gnttab_free_grant_references(grant_ref_t head); +void gnttab_free_grant_reference_seq(grant_ref_t head, unsigned int count); + int gnttab_empty_grant_references(const grant_ref_t *pprivate_head); int gnttab_claim_grant_reference(grant_ref_t *pprivate_head); diff --git a/include/xen/xen-ops.h b/include/xen/xen-ops.h index c7c1b46ff4cd..80546960f8b7 100644 --- a/include/xen/xen-ops.h +++ b/include/xen/xen-ops.h @@ -214,4 +214,17 @@ static inline void xen_preemptible_hcall_end(void) { } #endif /* CONFIG_XEN_PV && !CONFIG_PREEMPTION */ +#ifdef CONFIG_XEN_GRANT_DMA_OPS +void xen_grant_setup_dma_ops(struct device *dev); +bool xen_is_grant_dma_device(struct device *dev); +#else +static inline void xen_grant_setup_dma_ops(struct device *dev) +{ +} +static inline bool xen_is_grant_dma_device(struct device *dev) +{ + return false; +} +#endif /* CONFIG_XEN_GRANT_DMA_OPS */ + #endif /* INCLUDE_XEN_OPS_H */ diff --git a/include/xen/xen.h b/include/xen/xen.h index a99bab817523..0780a81e140d 100644 --- a/include/xen/xen.h +++ b/include/xen/xen.h @@ -52,6 +52,14 @@ bool xen_biovec_phys_mergeable(const struct bio_vec *vec1, extern u64 xen_saved_max_mem_size; #endif +#include <linux/platform-feature.h> + +static inline void xen_set_restricted_virtio_memory_access(void) +{ + if (IS_ENABLED(CONFIG_XEN_VIRTIO) && xen_domain()) + platform_set(PLATFORM_VIRTIO_RESTRICTED_MEM_ACCESS); +} + #ifdef CONFIG_XEN_UNPOPULATED_ALLOC int xen_alloc_unpopulated_pages(unsigned int nr_pages, struct page **pages); void xen_free_unpopulated_pages(unsigned int nr_pages, struct page **pages); diff --git a/kernel/Makefile b/kernel/Makefile index 318789c728d3..a7e1f49ab2b3 100644 --- a/kernel/Makefile +++ b/kernel/Makefile @@ -7,7 +7,7 @@ obj-y = fork.o exec_domain.o panic.o \ cpu.o exit.o softirq.o resource.o \ sysctl.o capability.o ptrace.o user.o \ signal.o sys.o umh.o workqueue.o pid.o task_work.o \ - extable.o params.o \ + extable.o params.o platform-feature.o \ kthread.o sys_ni.o nsproxy.o \ notifier.o ksysfs.o cred.o reboot.o \ async.o range.o smpboot.o ucount.o regset.o diff --git a/kernel/platform-feature.c b/kernel/platform-feature.c new file mode 100644 index 000000000000..cb6a6c3e4fed --- /dev/null +++ b/kernel/platform-feature.c @@ -0,0 +1,27 @@ +// SPDX-License-Identifier: GPL-2.0 + +#include <linux/bitops.h> +#include <linux/cache.h> +#include <linux/export.h> +#include <linux/platform-feature.h> + +#define PLATFORM_FEAT_ARRAY_SZ BITS_TO_LONGS(PLATFORM_FEAT_N) +static unsigned long __read_mostly platform_features[PLATFORM_FEAT_ARRAY_SZ]; + +void platform_set(unsigned int feature) +{ + set_bit(feature, platform_features); +} +EXPORT_SYMBOL_GPL(platform_set); + +void platform_clear(unsigned int feature) +{ + clear_bit(feature, platform_features); +} +EXPORT_SYMBOL_GPL(platform_clear); + +bool platform_has(unsigned int feature) +{ + return test_bit(feature, platform_features); +} +EXPORT_SYMBOL_GPL(platform_has); |