diff options
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/bio.h | 1 | ||||
| -rw-r--r-- | include/linux/crc-itu-t.h | 2 | ||||
| -rw-r--r-- | include/linux/libata.h | 1 | ||||
| -rw-r--r-- | include/linux/mm_types.h | 5 | ||||
| -rw-r--r-- | include/linux/netfs.h | 58 | ||||
| -rw-r--r-- | include/linux/platform-feature.h | 19 | ||||
| -rw-r--r-- | include/linux/random.h | 3 | ||||
| -rw-r--r-- | include/linux/sunrpc/xdr.h | 16 | ||||
| -rw-r--r-- | include/linux/vdpa.h | 5 | ||||
| -rw-r--r-- | include/linux/virtio_config.h | 9 | ||||
| -rw-r--r-- | include/linux/workqueue.h | 66 | ||||
| -rw-r--r-- | include/linux/xarray.h | 1 |
12 files changed, 125 insertions, 61 deletions
diff --git a/include/linux/bio.h b/include/linux/bio.h index 1cf3738ef1ea..992ee987f273 100644 --- a/include/linux/bio.h +++ b/include/linux/bio.h @@ -403,7 +403,6 @@ enum { extern int bioset_init(struct bio_set *, unsigned int, unsigned int, int flags); extern void bioset_exit(struct bio_set *); extern int biovec_init_pool(mempool_t *pool, int pool_entries); -extern int bioset_init_from_src(struct bio_set *bs, struct bio_set *src); struct bio *bio_alloc_bioset(struct block_device *bdev, unsigned short nr_vecs, unsigned int opf, gfp_t gfp_mask, diff --git a/include/linux/crc-itu-t.h b/include/linux/crc-itu-t.h index a4367051e192..2f991a427ade 100644 --- a/include/linux/crc-itu-t.h +++ b/include/linux/crc-itu-t.h @@ -4,7 +4,7 @@ * * Implements the standard CRC ITU-T V.41: * Width 16 - * Poly 0x1021 (x^16 + x^12 + x^15 + 1) + * Poly 0x1021 (x^16 + x^12 + x^5 + 1) * Init 0 */ diff --git a/include/linux/libata.h b/include/linux/libata.h index 732de9014626..0f2a59c9c735 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -822,7 +822,6 @@ struct ata_port { struct ata_queued_cmd qcmd[ATA_MAX_QUEUE + 1]; u64 qc_active; int nr_active_links; /* #links with active qcs */ - unsigned int sas_last_tag; /* track next tag hw expects */ struct ata_link link; /* host default link */ struct ata_link *slave_link; /* see ata_slave_link_init() */ diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h index b34ff2cdbc4f..c29ab4c0cd5c 100644 --- a/include/linux/mm_types.h +++ b/include/linux/mm_types.h @@ -227,6 +227,7 @@ struct page { * struct folio - Represents a contiguous set of bytes. * @flags: Identical to the page flags. * @lru: Least Recently Used list; tracks how recently this folio was used. + * @mlock_count: Number of times this folio has been pinned by mlock(). * @mapping: The file this page belongs to, or refers to the anon_vma for * anonymous memory. * @index: Offset within the file, in units of pages. For anonymous memory, @@ -255,10 +256,14 @@ struct folio { unsigned long flags; union { struct list_head lru; + /* private: avoid cluttering the output */ struct { void *__filler; + /* public: */ unsigned int mlock_count; + /* private: */ }; + /* public: */ }; struct address_space *mapping; pgoff_t index; diff --git a/include/linux/netfs.h b/include/linux/netfs.h index 77fa6a61706a..097cdd644665 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; @@ -205,7 +206,9 @@ struct netfs_io_request { */ struct netfs_request_ops { int (*init_request)(struct netfs_io_request *rreq, struct file *file); + void (*free_request)(struct netfs_io_request *rreq); int (*begin_cache_operation)(struct netfs_io_request *rreq); + void (*expand_readahead)(struct netfs_io_request *rreq); bool (*clamp_length)(struct netfs_io_subrequest *subreq); void (*issue_read)(struct netfs_io_subrequest *subreq); @@ -213,7 +216,6 @@ struct netfs_request_ops { int (*check_write_begin)(struct file *file, loff_t pos, unsigned len, struct folio *folio, void **_fsdata); void (*done)(struct netfs_io_request *rreq); - void (*cleanup)(struct address_space *mapping, void *netfs_priv); }; /* @@ -256,7 +258,7 @@ 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. @@ -276,7 +278,8 @@ struct netfs_cache_ops { struct readahead_control; extern void netfs_readahead(struct readahead_control *); int netfs_read_folio(struct file *, struct folio *); -extern int netfs_write_begin(struct file *, struct address_space *, +extern int netfs_write_begin(struct netfs_inode *, + struct file *, struct address_space *, loff_t, unsigned int, struct folio **, void **); @@ -288,71 +291,56 @@ 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) -{ - return (void *)inode + sizeof(*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) +static inline struct netfs_inode *netfs_inode(struct inode *inode) { - return (void *)ctx - sizeof(struct inode); + return container_of(inode, struct netfs_inode, inode); } /** - * netfs_i_context_init - Initialise a netfs lib context - * @inode: The inode with which the context is associated + * netfs_inode_init - Initialise a netfslib inode context + * @inode: The netfs inode to initialise * @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 netfs_inode *ctx, + const struct netfs_request_ops *ops) { - struct netfs_i_context *ctx = netfs_i_context(inode); - - memset(ctx, 0, sizeof(*ctx)); ctx->ops = ops; - ctx->remote_i_size = i_size_read(inode); + ctx->remote_i_size = i_size_read(&ctx->inode); +#if IS_ENABLED(CONFIG_FSCACHE) + ctx->cache = NULL; +#endif } /** * netfs_resize_file - Note that a file got resized - * @inode: The inode being resized + * @ctx: The netfs inode being resized * @new_i_size: The new file size * * Inform the netfs lib that a file got resized so that it can adjust its state. */ -static inline void netfs_resize_file(struct inode *inode, loff_t new_i_size) +static inline void netfs_resize_file(struct netfs_inode *ctx, loff_t new_i_size) { - struct netfs_i_context *ctx = netfs_i_context(inode); - ctx->remote_i_size = new_i_size; } /** * netfs_i_cookie - Get the cache cookie from the inode - * @inode: The inode to query + * @ctx: The netfs inode to query * * Get the caching cookie (if enabled) from the network filesystem's inode. */ -static inline struct fscache_cookie *netfs_i_cookie(struct inode *inode) +static inline struct fscache_cookie *netfs_i_cookie(struct netfs_inode *ctx) { #if IS_ENABLED(CONFIG_FSCACHE) - struct netfs_i_context *ctx = netfs_i_context(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/random.h b/include/linux/random.h index fae0c84027fd..20e389a14e5c 100644 --- a/include/linux/random.h +++ b/include/linux/random.h @@ -13,7 +13,7 @@ struct notifier_block; void add_device_randomness(const void *buf, size_t len); -void add_bootloader_randomness(const void *buf, size_t len); +void __init add_bootloader_randomness(const void *buf, size_t len); void add_input_randomness(unsigned int type, unsigned int code, unsigned int value) __latent_entropy; void add_interrupt_randomness(int irq) __latent_entropy; @@ -74,7 +74,6 @@ static inline unsigned long get_random_canary(void) int __init random_init(const char *command_line); bool rng_is_initialized(void); -bool rng_has_arch_random(void); int wait_for_random_bytes(void); /* Calls wait_for_random_bytes() and then calls get_random_bytes(buf, nbytes). diff --git a/include/linux/sunrpc/xdr.h b/include/linux/sunrpc/xdr.h index 4417f667c757..5860f32e3958 100644 --- a/include/linux/sunrpc/xdr.h +++ b/include/linux/sunrpc/xdr.h @@ -243,7 +243,7 @@ extern void xdr_init_encode(struct xdr_stream *xdr, struct xdr_buf *buf, extern __be32 *xdr_reserve_space(struct xdr_stream *xdr, size_t nbytes); extern int xdr_reserve_space_vec(struct xdr_stream *xdr, struct kvec *vec, size_t nbytes); -extern void xdr_commit_encode(struct xdr_stream *xdr); +extern void __xdr_commit_encode(struct xdr_stream *xdr); extern void xdr_truncate_encode(struct xdr_stream *xdr, size_t len); extern int xdr_restrict_buflen(struct xdr_stream *xdr, int newbuflen); extern void xdr_write_pages(struct xdr_stream *xdr, struct page **pages, @@ -307,6 +307,20 @@ xdr_reset_scratch_buffer(struct xdr_stream *xdr) } /** + * xdr_commit_encode - Ensure all data is written to xdr->buf + * @xdr: pointer to xdr_stream + * + * Handle encoding across page boundaries by giving the caller a + * temporary location to write to, then later copying the data into + * place. __xdr_commit_encode() does that copying. + */ +static inline void xdr_commit_encode(struct xdr_stream *xdr) +{ + if (unlikely(xdr->scratch.iov_len)) + __xdr_commit_encode(xdr); +} + +/** * xdr_stream_remaining - Return the number of bytes remaining in the stream * @xdr: pointer to struct xdr_stream * diff --git a/include/linux/vdpa.h b/include/linux/vdpa.h index 4700a88a28f6..7b4a13d3bd91 100644 --- a/include/linux/vdpa.h +++ b/include/linux/vdpa.h @@ -178,7 +178,8 @@ struct vdpa_map_file { * for the device * @vdev: vdpa device * Returns virtqueue algin requirement - * @get_vq_group: Get the group id for a specific virtqueue + * @get_vq_group: Get the group id for a specific + * virtqueue (optional) * @vdev: vdpa device * @idx: virtqueue index * Returns u32: group id for this virtqueue @@ -243,7 +244,7 @@ struct vdpa_map_file { * Returns the iova range supported by * the device. * @set_group_asid: Set address space identifier for a - * virtqueue group + * virtqueue group (optional) * @vdev: vdpa device * @group: virtqueue group * @asid: address space id for this group 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/linux/workqueue.h b/include/linux/workqueue.h index 7fee9b6cfede..62e75dd40d9a 100644 --- a/include/linux/workqueue.h +++ b/include/linux/workqueue.h @@ -406,7 +406,7 @@ alloc_workqueue(const char *fmt, unsigned int flags, int max_active, ...); * alloc_ordered_workqueue - allocate an ordered workqueue * @fmt: printf format for the name of the workqueue * @flags: WQ_* flags (only WQ_FREEZABLE and WQ_MEM_RECLAIM are meaningful) - * @args...: args for @fmt + * @args: args for @fmt * * Allocate an ordered workqueue. An ordered workqueue executes at * most one work item at any given time in the queued order. They are @@ -445,7 +445,7 @@ extern bool mod_delayed_work_on(int cpu, struct workqueue_struct *wq, struct delayed_work *dwork, unsigned long delay); extern bool queue_rcu_work(struct workqueue_struct *wq, struct rcu_work *rwork); -extern void flush_workqueue(struct workqueue_struct *wq); +extern void __flush_workqueue(struct workqueue_struct *wq); extern void drain_workqueue(struct workqueue_struct *wq); extern int schedule_on_each_cpu(work_func_t func); @@ -563,15 +563,23 @@ static inline bool schedule_work(struct work_struct *work) return queue_work(system_wq, work); } +/* + * Detect attempt to flush system-wide workqueues at compile time when possible. + * + * See https://lkml.kernel.org/r/49925af7-78a8-a3dd-bce6-cfc02e1a9236@I-love.SAKURA.ne.jp + * for reasons and steps for converting system-wide workqueues into local workqueues. + */ +extern void __warn_flushing_systemwide_wq(void) + __compiletime_warning("Please avoid flushing system-wide workqueues."); + /** * flush_scheduled_work - ensure that any scheduled work has run to completion. * * Forces execution of the kernel-global workqueue and blocks until its * completion. * - * Think twice before calling this function! It's very easy to get into - * trouble if you don't take great care. Either of the following situations - * will lead to deadlock: + * It's very easy to get into trouble if you don't take great care. + * Either of the following situations will lead to deadlock: * * One of the work items currently on the workqueue needs to acquire * a lock held by your code or its caller. @@ -586,11 +594,51 @@ static inline bool schedule_work(struct work_struct *work) * need to know that a particular work item isn't queued and isn't running. * In such cases you should use cancel_delayed_work_sync() or * cancel_work_sync() instead. + * + * Please stop calling this function! A conversion to stop flushing system-wide + * workqueues is in progress. This function will be removed after all in-tree + * users stopped calling this function. */ -static inline void flush_scheduled_work(void) -{ - flush_workqueue(system_wq); -} +/* + * The background of commit 771c035372a036f8 ("deprecate the + * '__deprecated' attribute warnings entirely and for good") is that, + * since Linus builds all modules between every single pull he does, + * the standard kernel build needs to be _clean_ in order to be able to + * notice when new problems happen. Therefore, don't emit warning while + * there are in-tree users. + */ +#define flush_scheduled_work() \ +({ \ + if (0) \ + __warn_flushing_systemwide_wq(); \ + __flush_workqueue(system_wq); \ +}) + +/* + * Although there is no longer in-tree caller, for now just emit warning + * in order to give out-of-tree callers time to update. + */ +#define flush_workqueue(wq) \ +({ \ + struct workqueue_struct *_wq = (wq); \ + \ + if ((__builtin_constant_p(_wq == system_wq) && \ + _wq == system_wq) || \ + (__builtin_constant_p(_wq == system_highpri_wq) && \ + _wq == system_highpri_wq) || \ + (__builtin_constant_p(_wq == system_long_wq) && \ + _wq == system_long_wq) || \ + (__builtin_constant_p(_wq == system_unbound_wq) && \ + _wq == system_unbound_wq) || \ + (__builtin_constant_p(_wq == system_freezable_wq) && \ + _wq == system_freezable_wq) || \ + (__builtin_constant_p(_wq == system_power_efficient_wq) && \ + _wq == system_power_efficient_wq) || \ + (__builtin_constant_p(_wq == system_freezable_power_efficient_wq) && \ + _wq == system_freezable_power_efficient_wq)) \ + __warn_flushing_systemwide_wq(); \ + __flush_workqueue(_wq); \ +}) /** * schedule_delayed_work_on - queue work in global workqueue on CPU after delay diff --git a/include/linux/xarray.h b/include/linux/xarray.h index 72feab5ea8d4..c29e11b2c073 100644 --- a/include/linux/xarray.h +++ b/include/linux/xarray.h @@ -1508,6 +1508,7 @@ void *xas_find_marked(struct xa_state *, unsigned long max, xa_mark_t); void xas_init_marks(const struct xa_state *); bool xas_nomem(struct xa_state *, gfp_t); +void xas_destroy(struct xa_state *); void xas_pause(struct xa_state *); void xas_create_range(struct xa_state *); |