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2015-02-17MIPS: asm: irqflags: Add MIPS R6 related definitionsMarkos Chandras2-4/+5
Add the MIPS R6 related definitions to the IRQ related macros Signed-off-by: Markos Chandras <[email protected]>
2015-02-17MIPS: asm: hazards: Add MIPSR6 definitionsMarkos Chandras1-4/+5
Add the MIPSR6 related definitions to MIPS hazards Signed-off-by: Markos Chandras <[email protected]>
2015-02-17MIPS: asm: cpu: Add MIPSR6 ISA definitionsLeonid Yegoshin2-6/+20
Add MIPS R6 to the ISA definitions Signed-off-by: Leonid Yegoshin <[email protected]> Signed-off-by: Markos Chandras <[email protected]>
2015-02-17MIPS: Use generic checksum functions for MIPS R6Markos Chandras5-0/+14
The following instructions have been removed from MIPS R6 ulw, ulh, swl, lwr, lwl, swr. However, all of them are used in the MIPS specific checksum implementation. As a result of which, we will use the generic checksum on MIPS R6 Signed-off-by: Markos Chandras <[email protected]>
2015-02-17MIPS: asm: asmmacro: Replace "add" instructions with "addu"Markos Chandras1-2/+2
The "add" instruction is actually a macro in binutils and depending on the size of the immediate it can expand to an "addi" instruction. However, the "addi" instruction traps on overflows which is not something we want on address calculation. Link: http://www.linux-mips.org/archives/linux-mips/2015-01/msg00121.html Cc: Paul Burton <[email protected]> Cc: Maciej W. Rozycki <[email protected]> Cc: <[email protected]> # v3.15+ Signed-off-by: Markos Chandras <[email protected]>
2015-02-17MIPS: asm: asmmacro: Add MIPS R6 support to the simple EI/DI variantsLeonid Yegoshin1-1/+1
EI/DI instructions are available in MIPS R6 so add the needed definitions. Signed-off-by: Leonid Yegoshin <[email protected]> Signed-off-by: Markos Chandras <[email protected]>
2015-02-17MIPS: asm: stackframe: Do not preserve the HI/LO registers on MIPS R6Leonid Yegoshin1-4/+4
The HI/LO registers have been removed from MIPS R6. Instructions such as MULT and DIV have been replaced with a new pair of instructions for the HI/LO operations for example: MULT -> MUL, MUH DIV -> DIV, MOD So we avoid preserving the pre-R6 HI/LO registers in MIPS R6 Signed-off-by: Leonid Yegoshin <[email protected]> Signed-off-by: Markos Chandras <[email protected]>
2015-02-17MIPS: asm: module: define MODULE_PROC_FAMILY for MIPS R6Leonid Yegoshin1-0/+4
Define the MODULE_PROC_FAMILY for the MIPS R6 ISA. Signed-off-by: Leonid Yegoshin <[email protected]> Signed-off-by: Markos Chandras <[email protected]>
2015-02-17MIPS: asm: compiler: Add new macros to set ISA and arch asm annotationsMarkos Chandras1-0/+13
There are certain places where the code uses .set mips32 or .set mips64 or .set arch=r4000. In preparation of MIPS R6 support, and in order to use as less #ifdefs as possible, we define new macros to set similar annotations for MIPS R6. Signed-off-by: Markos Chandras <[email protected]>
2015-02-17fs/binfmt_som: Drop kernel support for HP-UX SOM binariesHelge Deller5-462/+0
The parisc arch has been the only user of HP-UX SOM binaries. Support for HP-UX executables was never finished and since we now drop support for the HP-UX compat layer anyway, it does not makes sense to keep the BINFMT_SOM support. Cc: [email protected] Cc: [email protected] Signed-off-by: Helge Deller <[email protected]>
2015-02-17sg: fix EWOULDBLOCK errors with scsi-mqTony Battersby1-1/+16
With scsi-mq enabled, userspace programs can get unexpected EWOULDBLOCK (a.k.a. EAGAIN) errors when submitting commands to the SCSI generic driver. Fix by calling blk_get_request() with GFP_KERNEL instead of GFP_ATOMIC. Note: to avoid introducing a potential deadlock, this patch should be applied after the patch titled "sg: fix unkillable I/O wait deadlock with scsi-mq". Cc: <[email protected]> # 3.17+ Signed-off-by: Tony Battersby <[email protected]> Acked-by: Douglas Gilbert <[email protected]> Tested-by: Douglas Gilbert <[email protected]> Signed-off-by: James Bottomley <[email protected]>
2015-02-17sg: fix unkillable I/O wait deadlock with scsi-mqTony Battersby1-3/+14
When using the write()/read() interface for submitting commands, the SCSI generic driver does not call blk_put_request() on a completed SCSI command until userspace calls read() to get the command completion. Since scsi-mq uses a fixed number of preallocated requests, this makes it possible for userspace to exhaust the entire preallocated supply of requests. For places in the kernel that call blk_get_request() with GFP_KERNEL, this can cause the calling process to deadlock in a permanent unkillable I/O wait in blk_get_request() -> ... -> bt_get(). For places in the kernel that call blk_get_request() with GFP_ATOMIC, this can cause blk_get_request() always to return -EWOULDBLOCK. Note that these problems happen only if scsi-mq is enabled. Prevent the problems by calling blk_put_request() as soon as the SCSI command completes instead of waiting for userspace to call read(). Cc: <[email protected]> # 3.17+ Signed-off-by: Tony Battersby <[email protected]> Acked-by: Douglas Gilbert <[email protected]> Tested-by: Douglas Gilbert <[email protected]> Signed-off-by: James Bottomley <[email protected]>
2015-02-17parisc: Remove unused functionRickard Strandqvist1-3/+0
Remove the function smp_send_start() that is not used anywhere. This was partially found by using a static code analysis program called cppcheck. Signed-off-by: Rickard Strandqvist <[email protected]> Signed-off-by: Helge Deller <[email protected]>
2015-02-17parisc: macro whitespace fixesMichael S. Tsirkin1-58/+58
While working on arch/parisc/include/asm/uaccess.h, I noticed that some macros within this header are made harder to read because they violate a coding style rule: space is missing after comma. Fix it up. Signed-off-by: Michael S. Tsirkin <[email protected]> Signed-off-by: Helge Deller <[email protected]>
2015-02-17EDAC, amd64_edac: Prevent OOPS with >16 memory controllersDaniel J Blueman1-2/+8
When DRAM errors occur on memory controllers after EDAC_MAX_MCS (16), the kernel fatally dereferences unallocated structures, see splat below; this occurs on at least NumaConnect systems. Fix by checking if a memory controller info structure was found. BUG: unable to handle kernel NULL pointer dereference at 0000000000000320 IP: [<ffffffff819f714f>] decode_bus_error+0x2f/0x2b0 PGD 2f8b5a3067 PUD 2f8b5a2067 PMD 0 Oops: 0000 [#2] SMP Modules linked in: CPU: 224 PID: 11930 Comm: stream_c.exe.gn Tainted: G D 3.19.0 #1 Hardware name: Supermicro H8QGL/H8QGL, BIOS 3.5b 01/28/2015 task: ffff8807dbfb8c00 ti: ffff8807dd16c000 task.ti: ffff8807dd16c000 RIP: 0010:[<ffffffff819f714f>] [<ffffffff819f714f>] decode_bus_error+0x2f/0x2b0 RSP: 0000:ffff8907dfc03c48 EFLAGS: 00010297 RAX: 0000000000000001 RBX: 9c67400010080a13 RCX: 0000000000001dc6 RDX: 000000001dc61dc6 RSI: ffff8907dfc03df0 RDI: 000000000000001c RBP: ffff8907dfc03ce8 R08: 0000000000000000 R09: 0000000000000022 R10: ffff891fffa30380 R11: 00000000001cfc90 R12: 0000000000000008 R13: 0000000000000000 R14: 000000000000001c R15: 00009c6740001000 FS: 00007fa97ee18700(0000) GS:ffff8907dfc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000320 CR3: 0000003f889b8000 CR4: 00000000000407e0 Stack: 0000000000000000 ffff8907dfc03df0 0000000000000008 9c67400010080a13 000000000000001c 00009c6740001000 ffff8907dfc03c88 ffffffff810e4f9a ffff8907dfc03ce8 ffffffff81b375b9 0000000000000000 0000000000000010 Call Trace: <IRQ> ? vprintk_default ? printk amd_decode_mce notifier_call_chain atomic_notifier_call_chain mce_log machine_check_poll mce_timer_fn ? mce_cpu_restart call_timer_fn.isra.29 run_timer_softirq __do_softirq irq_exit smp_apic_timer_interrupt apic_timer_interrupt <EOI> ? down_read_trylock __do_page_fault ? __schedule do_page_fault page_fault Signed-off-by: Daniel J Blueman <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Cc: [email protected] [ Boris: massage commit message ] Signed-off-by: Borislav Petkov <[email protected]>
2015-02-17ASoC: Intel: add SNDRV_PCM_INFO_DRAIN_TRIGGER flagLibin Yang1-1/+2
Add SNDRV_PCM_INFO_DRAIN_TRIGGER in snd_pcm_hardware.info to call sst_hsw_stream_set_silence_start() when PCM draining. Signed-off-by: Libin Yang <[email protected]> Signed-off-by: Takashi Iwai <[email protected]>
2015-02-17ALSA: usb-audio: Don't attempt to get Lifecam HD-5000 sample rateJoe Turner3-0/+12
Adds a quirk to disable the check that the sample rate has been set correctly, as the Lifecam does not support getting the sample rate. This means that we don't need to wait for the USB timeout when attempting to get the sample rate. Waiting for the timeout causes problems in some applications, which give up on the device acquisition process before it has had time to complete, resulting in no sound. [minor tidy up by tiwai] Signed-off-by: Joe Turner <[email protected]> Signed-off-by: Takashi Iwai <[email protected]>
2015-02-17virtio: don't set VIRTIO_CONFIG_S_DRIVER_OK twice.Rusty Russell1-1/+4
I noticed this with the console device. It's not *wrong*, just a bit weird. Signed-off-by: Rusty Russell <[email protected]>
2015-02-17virtio_net: unconditionally define struct virtio_net_hdr_v1.Rusty Russell1-29/+25
This was introduced in commit ed9ecb0415b97b5f9f91f146e1977bb372c74c6d, but only defined if !VIRTIO_NET_NO_LEGACY. We should always define it: easier for users to have conditional legacy code. Suggested-by: "Michael S. Tsirkin" <[email protected]> Signed-off-by: Rusty Russell <[email protected]>
2015-02-16Merge JFFS2 updates from David WoodhouseBrian Norris1-0/+5
2015-02-16rtc: add driver for DS1685 family of real time clocksJoshua Kinard5-0/+2724
This adds a driver for the Dallas/Maxim DS1685-family of RTC chips. It supports the DS1685/DS1687, DS1688/DS1691, DS1689/DS1693, DS17285/DS17287, DS17485/DS17487, and DS17885/DS17887 RTC chips. These chips are commonly found in SGI O2 and SGI Octane systems. It was originally derived from a driver patch submitted by Matthias Fuchs many years ago for use in EPPC-405-UC modules, which also used these RTCs. In addition to the time-keeping functions, this RTC also handles the shutdown mechanism of the O2 and Octane and acts as a partial NVRAM for the boot PROMS in these systems. Verified on both an SGI O2 and an SGI Octane. Signed-off-by: Joshua Kinard <[email protected]> Cc: Ralf Baechle <[email protected]> Cc: Alessandro Zummo <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2015-02-16MAINTAINERS: add entry for Maxim PMICs on Samsung boardsKrzysztof Kozlowski1-0/+20
Add myself and Chanwoo Choi as supporters to help in reviewing patches for Maxim 77686 PMIC and Maxim 14577/77693 MUIC drivers: - mfd (all of them), - extcon (extcon-max14577.c, extcon-max77693.c), - regulator (all of them), - clock (clk-max77686.c), - RTC (rtc-max77686.c). Lately I am the author of contributors to them. These drivers are used on Exynos-based boards (Trats 2, Gear 1 and Gear 2). Signed-off-by: Krzysztof Kozlowski <[email protected]> Cc: MyungJoo Ham <[email protected]> Cc: Chanwoo Choi <[email protected]> Cc: Samuel Ortiz <[email protected]> Cc: Lee Jones <[email protected]> Cc: Liam Girdwood <[email protected]> Cc: Mark Brown <[email protected]> Cc: Mike Turquette <[email protected]> Cc: Stephen Boyd <[email protected]> Cc: Alessandro Zummo <[email protected]> Acked-by: Mark Brown <[email protected]> Acked-by: Lee Jones <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2015-02-16lib/Kconfig: use bool instead of booleanChristoph Jaeger1-1/+1
Keyword 'boolean' for type definition attributes is considered deprecated and, therefore, should not be used anymore. See http://lkml.kernel.org/r/[email protected] See http://lkml.kernel.org/r/[email protected] Signed-off-by: Christoph Jaeger <[email protected]> Cc: Russell King <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2015-02-16powerpc: drop _PAGE_FILE and pte_file()-related helpersKirill A. Shutemov11-26/+4
We've replaced remap_file_pages(2) implementation with emulation. Nobody creates non-linear mapping anymore. Signed-off-by: Kirill A. Shutemov <[email protected]> Cc: Benjamin Herrenschmidt <[email protected]> Cc: Paul Mackerras <[email protected]> Cc: Michael Ellerman <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2015-02-16ocfs2: set append dio as a ro compat featureJoseph Qi3-2/+31
Intruduce a bit OCFS2_FEATURE_RO_COMPAT_APPEND_DIO and check it in write flow. If the bit is not set, fall back to the old way. Signed-off-by: Joseph Qi <[email protected]> Cc: Weiwei Wang <[email protected]> Cc: Joel Becker <[email protected]> Cc: Junxiao Bi <[email protected]> Cc: Mark Fasheh <[email protected]> Cc: Xuejiufei <[email protected]> Cc: alex chen <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2015-02-16ocfs2: wait for orphan recovery first once append O_DIRECT write crashJoseph Qi4-0/+43
If one node has crashed with orphan entry leftover, another node which do append O_DIRECT write to the same file will override the i_dio_orphaned_slot. Then the old entry won't be cleaned forever. If this case happens, we let it wait for orphan recovery first. Signed-off-by: Joseph Qi <[email protected]> Cc: Weiwei Wang <[email protected]> Cc: Joel Becker <[email protected]> Cc: Junxiao Bi <[email protected]> Cc: Mark Fasheh <[email protected]> Cc: Xuejiufei <[email protected]> Cc: alex chen <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2015-02-16ocfs2: complete the rest request through buffer ioJoseph Qi1-1/+42
Complte the rest request thourgh buffer io after direct write performed. Signed-off-by: Joseph Qi <[email protected]> Cc: Weiwei Wang <[email protected]> Cc: Joel Becker <[email protected]> Cc: Junxiao Bi <[email protected]> Cc: Mark Fasheh <[email protected]> Cc: Xuejiufei <[email protected]> Cc: alex chen <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2015-02-16ocfs2: do not fallback to buffer I/O write if appendingJoseph Qi1-1/+4
Now we can do direct io and do not fallback to buffered IO any more in case of append O_DIRECT write. Signed-off-by: Joseph Qi <[email protected]> Cc: Weiwei Wang <[email protected]> Cc: Joel Becker <[email protected]> Cc: Junxiao Bi <[email protected]> Cc: Mark Fasheh <[email protected]> Cc: Xuejiufei <[email protected]> Cc: alex chen <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2015-02-16ocfs2: allocate blocks in ocfs2_direct_IO_get_blocksJoseph Qi1-3/+42
Allow blocks allocation in ocfs2_direct_IO_get_blocks. Signed-off-by: Joseph Qi <[email protected]> Cc: Weiwei Wang <[email protected]> Cc: Junxiao Bi <[email protected]> Cc: Joel Becker <[email protected]> Cc: Mark Fasheh <[email protected]> Cc: Xuejiufei <[email protected]> Cc: alex chen <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2015-02-16ocfs2: implement ocfs2_direct_IO_writeJoseph Qi2-3/+204
Implement ocfs2_direct_IO_write. Add the inode to orphan dir first, and then delete it once append O_DIRECT finished. This is to make sure block allocation and inode size are consistent. [[email protected]: fix it for "block: Add discard flag to blkdev_issue_zeroout() function"] Signed-off-by: Joseph Qi <[email protected]> Cc: Weiwei Wang <[email protected]> Cc: Junxiao Bi <[email protected]> Cc: Joel Becker <[email protected]> Cc: Mark Fasheh <[email protected]> Cc: Xuejiufei <[email protected]> Cc: alex chen <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2015-02-16ocfs2: add orphan recovery types in ocfs2_recover_orphansJoseph Qi2-20/+93
Define two orphan recovery types, which indicates if need truncate file or not. Signed-off-by: Joseph Qi <[email protected]> Cc: Weiwei Wang <[email protected]> Cc: Junxiao Bi <[email protected]> Cc: Joel Becker <[email protected]> Cc: Mark Fasheh <[email protected]> Cc: Xuejiufei <[email protected]> Cc: alex chen <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2015-02-16ocfs2: add functions to add and remove inode in orphan dirJoseph Qi5-30/+238
Add functions to add inode to orphan dir and remove inode in orphan dir. Here we do not call ocfs2_prepare_orphan_dir and ocfs2_orphan_add directly. Because append O_DIRECT will add inode to orphan two and may result in more than one orphan entry for the same inode. [[email protected]: avoid dynamic stack allocation] Signed-off-by: Joseph Qi <[email protected]> Cc: Weiwei Wang <[email protected]> Cc: Junxiao Bi <[email protected]> Cc: Joel Becker <[email protected]> Cc: Mark Fasheh <[email protected]> Cc: Xuejiufei <[email protected]> Cc: alex chen <[email protected]> Cc: Fengguang Wu <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2015-02-16ocfs2: prepare some interfaces used in append direct ioJoseph Qi2-2/+18
Currently in case of append O_DIRECT write (block not allocated yet), ocfs2 will fall back to buffered I/O. This has some disadvantages. Firstly, it is not the behavior as expected. Secondly, it will consume huge page cache, e.g. in mass backup scenario. Thirdly, modern filesystems such as ext4 support this feature. In this patch set, the direct I/O write doesn't fallback to buffer I/O write any more because the allocate blocks are enabled in direct I/O now. This patch (of 9): Prepare some interfaces which will be used in append O_DIRECT write. Signed-off-by: Joseph Qi <[email protected]> Cc: Weiwei Wang <[email protected]> Cc: Mark Fasheh <[email protected]> Cc: Joel Becker <[email protected]> Cc: Xuejiufei <[email protected]> Cc: Junxiao Bi <[email protected]> Cc: alex chen <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2015-02-16MAINTAINERS: fix spelling mistake & remove trailing WSAkash Shende1-1/+1
Signed-off-by: Akash Shende <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2015-02-16dax: does not work correctly with virtual aliasing cachesMatthew Wilcox2-0/+4
The DAX code accesses the underlying storage through the kernel's linear mapping, which may not be cache-coherent with user mappings on ARM, MIPS or SPARC. Temporarily disable the DAX code until this problem is resolved. The original XIP code also had this problem, but it was never noticed. Signed-off-by: Matthew Wilcox <[email protected]> Cc: Andreas Dilger <[email protected]> Cc: Boaz Harrosh <[email protected]> Cc: Christoph Hellwig <[email protected]> Cc: Dave Chinner <[email protected]> Cc: Jan Kara <[email protected]> Cc: Jens Axboe <[email protected]> Cc: Kirill A. Shutemov <[email protected]> Cc: Mathieu Desnoyers <[email protected]> Cc: Randy Dunlap <[email protected]> Cc: Ross Zwisler <[email protected]> Cc: Theodore Ts'o <[email protected]> Cc: Ralf Baechle <[email protected]> Cc: Russell King <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2015-02-16brd: rename XIP to DAXMatthew Wilcox2-13/+14
Since this is relating to FS_XIP, not KERNEL_XIP, it should be called DAX instead of XIP. Signed-off-by: Matthew Wilcox <[email protected]> Cc: Andreas Dilger <[email protected]> Cc: Boaz Harrosh <[email protected]> Cc: Christoph Hellwig <[email protected]> Cc: Dave Chinner <[email protected]> Cc: Jan Kara <[email protected]> Cc: Jens Axboe <[email protected]> Cc: Kirill A. Shutemov <[email protected]> Cc: Mathieu Desnoyers <[email protected]> Cc: Randy Dunlap <[email protected]> Cc: Ross Zwisler <[email protected]> Cc: Theodore Ts'o <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2015-02-16ext4: add DAX functionalityRoss Zwisler8-37/+179
This is a port of the DAX functionality found in the current version of ext2. [[email protected]: heavily tweaked] [[email protected]: remap_pages went away] Signed-off-by: Ross Zwisler <[email protected]> Reviewed-by: Andreas Dilger <[email protected]> Signed-off-by: Matthew Wilcox <[email protected]> Cc: Boaz Harrosh <[email protected]> Cc: Christoph Hellwig <[email protected]> Cc: Dave Chinner <[email protected]> Cc: Jan Kara <[email protected]> Cc: Jens Axboe <[email protected]> Cc: Kirill A. Shutemov <[email protected]> Cc: Mathieu Desnoyers <[email protected]> Cc: Randy Dunlap <[email protected]> Cc: Theodore Ts'o <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2015-02-16dax: add dax_zero_page_rangeMatthew Wilcox3-6/+34
This new function allows us to support hole-punch for DAX files by zeroing a partial page, as opposed to the dax_truncate_page() function which can only truncate to the end of the page. Reimplement dax_truncate_page() to call dax_zero_page_range(). [[email protected]: ported to 3.13-rc2] [[email protected]: fix typos in comments] Signed-off-by: Matthew Wilcox <[email protected]> Signed-off-by: Ross Zwisler <[email protected]> Cc: Andreas Dilger <[email protected]> Cc: Boaz Harrosh <[email protected]> Cc: Christoph Hellwig <[email protected]> Cc: Dave Chinner <[email protected]> Cc: Jan Kara <[email protected]> Cc: Jens Axboe <[email protected]> Cc: Kirill A. Shutemov <[email protected]> Cc: Mathieu Desnoyers <[email protected]> Cc: Randy Dunlap <[email protected]> Cc: Theodore Ts'o <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2015-02-16ext2: get rid of most mentions of XIP in ext2Matthew Wilcox6-25/+34
To help people transition, accept the 'xip' mount option (and report it in /proc/mounts), but print a message encouraging people to switch over to the 'dax' option. Signed-off-by: Matthew Wilcox <[email protected]> Reviewed-by: Mathieu Desnoyers <[email protected]> Cc: Andreas Dilger <[email protected]> Cc: Boaz Harrosh <[email protected]> Cc: Christoph Hellwig <[email protected]> Cc: Dave Chinner <[email protected]> Cc: Jan Kara <[email protected]> Cc: Jens Axboe <[email protected]> Cc: Kirill A. Shutemov <[email protected]> Cc: Randy Dunlap <[email protected]> Cc: Ross Zwisler <[email protected]> Cc: Theodore Ts'o <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2015-02-16ext2: remove ext2_aops_xipMatthew Wilcox3-9/+3
We shouldn't need a special address_space_operations any more Signed-off-by: Matthew Wilcox <[email protected]> Reviewed-by: Mathieu Desnoyers <[email protected]> Cc: Andreas Dilger <[email protected]> Cc: Boaz Harrosh <[email protected]> Cc: Christoph Hellwig <[email protected]> Cc: Dave Chinner <[email protected]> Cc: Jan Kara <[email protected]> Cc: Jens Axboe <[email protected]> Cc: Kirill A. Shutemov <[email protected]> Cc: Randy Dunlap <[email protected]> Cc: Ross Zwisler <[email protected]> Cc: Theodore Ts'o <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2015-02-16vfs,ext2: remove CONFIG_EXT2_FS_XIP and rename CONFIG_FS_XIP to CONFIG_FS_DAXMatthew Wilcox8-26/+21
The fewer Kconfig options we have the better. Use the generic CONFIG_FS_DAX to enable XIP support in ext2 as well as in the core. Signed-off-by: Matthew Wilcox <[email protected]> Cc: Andreas Dilger <[email protected]> Cc: Boaz Harrosh <[email protected]> Cc: Christoph Hellwig <[email protected]> Cc: Dave Chinner <[email protected]> Cc: Jan Kara <[email protected]> Cc: Jens Axboe <[email protected]> Cc: Kirill A. Shutemov <[email protected]> Cc: Mathieu Desnoyers <[email protected]> Cc: Randy Dunlap <[email protected]> Cc: Ross Zwisler <[email protected]> Cc: Theodore Ts'o <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2015-02-16ext2: remove xip.c and xip.hMatthew Wilcox6-35/+0
These files are now empty, so delete them Signed-off-by: Matthew Wilcox <[email protected]> Reviewed-by: Mathieu Desnoyers <[email protected]> Cc: Andreas Dilger <[email protected]> Cc: Boaz Harrosh <[email protected]> Cc: Christoph Hellwig <[email protected]> Cc: Dave Chinner <[email protected]> Cc: Jan Kara <[email protected]> Cc: Jens Axboe <[email protected]> Cc: Kirill A. Shutemov <[email protected]> Cc: Randy Dunlap <[email protected]> Cc: Ross Zwisler <[email protected]> Cc: Theodore Ts'o <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2015-02-16ext2: remove ext2_use_xipMatthew Wilcox3-3/+7
Replace ext2_use_xip() with test_opt(XIP) which expands to the same code Signed-off-by: Matthew Wilcox <[email protected]> Reviewed-by: Mathieu Desnoyers <[email protected]> Cc: Andreas Dilger <[email protected]> Cc: Boaz Harrosh <[email protected]> Cc: Christoph Hellwig <[email protected]> Cc: Dave Chinner <[email protected]> Cc: Jan Kara <[email protected]> Cc: Jens Axboe <[email protected]> Cc: Kirill A. Shutemov <[email protected]> Cc: Randy Dunlap <[email protected]> Cc: Ross Zwisler <[email protected]> Cc: Theodore Ts'o <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2015-02-16ext2: remove ext2_xip_verify_sb()Matthew Wilcox3-35/+12
Jan Kara pointed out that calling ext2_xip_verify_sb() in ext2_remount() doesn't make sense, since changing the XIP option on remount isn't allowed. It also doesn't make sense to re-check whether blocksize is supported since it can't change between mounts. Replace the call to ext2_xip_verify_sb() in ext2_fill_super() with the equivalent check and delete the definition. Signed-off-by: Matthew Wilcox <[email protected]> Cc: Andreas Dilger <[email protected]> Cc: Boaz Harrosh <[email protected]> Cc: Christoph Hellwig <[email protected]> Cc: Dave Chinner <[email protected]> Cc: Jan Kara <[email protected]> Cc: Jens Axboe <[email protected]> Cc: Kirill A. Shutemov <[email protected]> Cc: Mathieu Desnoyers <[email protected]> Cc: Randy Dunlap <[email protected]> Cc: Ross Zwisler <[email protected]> Cc: Theodore Ts'o <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2015-02-16vfs: remove get_xip_memMatthew Wilcox13-95/+7
All callers of get_xip_mem() are now gone. Remove checks for it, initialisers of it, documentation of it and the only implementation of it. Also remove mm/filemap_xip.c as it is now empty. Also remove documentation of the long-gone get_xip_page(). Signed-off-by: Matthew Wilcox <[email protected]> Cc: Andreas Dilger <[email protected]> Cc: Boaz Harrosh <[email protected]> Cc: Christoph Hellwig <[email protected]> Cc: Dave Chinner <[email protected]> Cc: Jan Kara <[email protected]> Cc: Jens Axboe <[email protected]> Cc: Kirill A. Shutemov <[email protected]> Cc: Mathieu Desnoyers <[email protected]> Cc: Randy Dunlap <[email protected]> Cc: Ross Zwisler <[email protected]> Cc: Theodore Ts'o <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2015-02-16dax: replace XIP documentation with DAX documentationMatthew Wilcox3-73/+92
Based on the original XIP documentation, this documents the current state of affairs, and includes instructions on how users can enable DAX if their devices and kernel support it. Signed-off-by: Matthew Wilcox <[email protected]> Reviewed-by: Randy Dunlap <[email protected]> Cc: Andreas Dilger <[email protected]> Cc: Boaz Harrosh <[email protected]> Cc: Christoph Hellwig <[email protected]> Cc: Dave Chinner <[email protected]> Cc: Jan Kara <[email protected]> Cc: Jens Axboe <[email protected]> Cc: Kirill A. Shutemov <[email protected]> Cc: Mathieu Desnoyers <[email protected]> Cc: Ross Zwisler <[email protected]> Cc: Theodore Ts'o <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2015-02-16dax,ext2: replace xip_truncate_page with dax_truncate_pageMatthew Wilcox4-50/+46
It takes a get_block parameter just like nobh_truncate_page() and block_truncate_page() Signed-off-by: Matthew Wilcox <[email protected]> Reviewed-by: Mathieu Desnoyers <[email protected]> Cc: Andreas Dilger <[email protected]> Cc: Boaz Harrosh <[email protected]> Cc: Christoph Hellwig <[email protected]> Cc: Dave Chinner <[email protected]> Cc: Jan Kara <[email protected]> Cc: Jens Axboe <[email protected]> Cc: Kirill A. Shutemov <[email protected]> Cc: Randy Dunlap <[email protected]> Cc: Ross Zwisler <[email protected]> Cc: Theodore Ts'o <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2015-02-16dax,ext2: replace the XIP page fault handler with the DAX page fault handlerMatthew Wilcox4-209/+276
Instead of calling aops->get_xip_mem from the fault handler, the filesystem passes a get_block_t that is used to find the appropriate blocks. This requires that all architectures implement copy_user_page(). At the time of writing, mips and arm do not. Patches exist and are in progress. [[email protected]: remap_file_pages went away] Signed-off-by: Matthew Wilcox <[email protected]> Reviewed-by: Jan Kara <[email protected]> Cc: Andreas Dilger <[email protected]> Cc: Boaz Harrosh <[email protected]> Cc: Christoph Hellwig <[email protected]> Cc: Dave Chinner <[email protected]> Cc: Jens Axboe <[email protected]> Cc: Kirill A. Shutemov <[email protected]> Cc: Mathieu Desnoyers <[email protected]> Cc: Randy Dunlap <[email protected]> Cc: Ross Zwisler <[email protected]> Cc: Theodore Ts'o <[email protected]> Cc: Russell King <[email protected]> Cc: Ralf Baechle <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2015-02-16dax,ext2: replace ext2_clear_xip_target with dax_clear_blocksMatthew Wilcox5-20/+43
This is practically generic code; other filesystems will want to call it from other places, but there's nothing ext2-specific about it. Make it a little more generic by allowing it to take a count of the number of bytes to zero rather than fixing it to a single page. Thanks to Dave Hansen for suggesting that I need to call cond_resched() if zeroing more than one page. Signed-off-by: Matthew Wilcox <[email protected]> Cc: Andreas Dilger <[email protected]> Cc: Boaz Harrosh <[email protected]> Cc: Christoph Hellwig <[email protected]> Cc: Dave Chinner <[email protected]> Cc: Jan Kara <[email protected]> Cc: Jens Axboe <[email protected]> Cc: Kirill A. Shutemov <[email protected]> Cc: Mathieu Desnoyers <[email protected]> Cc: Randy Dunlap <[email protected]> Cc: Ross Zwisler <[email protected]> Cc: Theodore Ts'o <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2015-02-16dax,ext2: replace XIP read and write with DAX I/OMatthew Wilcox8-245/+214
Use the generic AIO infrastructure instead of custom read and write methods. In addition to giving us support for AIO, this adds the missing locking between read() and truncate(). Signed-off-by: Matthew Wilcox <[email protected]> Reviewed-by: Ross Zwisler <[email protected]> Reviewed-by: Jan Kara <[email protected]> Cc: Andreas Dilger <[email protected]> Cc: Boaz Harrosh <[email protected]> Cc: Christoph Hellwig <[email protected]> Cc: Dave Chinner <[email protected]> Cc: Jens Axboe <[email protected]> Cc: Kirill A. Shutemov <[email protected]> Cc: Mathieu Desnoyers <[email protected]> Cc: Randy Dunlap <[email protected]> Cc: Theodore Ts'o <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
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