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linux-sg2042/fs/xfs
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Darrick J. Wong 5d888b481e xfs: fix reflink source file racing with directio writes 
While trawling through the dedupe file comparison code trying to fix
page deadlocking problems, Dave Chinner noticed that the reflink code
only takes shared IOLOCK/MMAPLOCKs on the source file.  Because
page_mkwrite and directio writes do not take the EXCL versions of those
locks, this means that reflink can race with writer processes.

For pure remapping this can lead to undefined behavior and file
corruption; for dedupe this means that we cannot be sure that the
contents are identical when we decide to go ahead with the remapping.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
 		2019-08-18 18:53:25 -07:00
..
libxfs xfs: don't crash on null attr fork xfs_bmapi_read 2019-08-12 09:32:44 -07:00
scrub xfs: Fix possible null-pointer dereferences in xchk_da_btree_block_check_sibling() 2019-07-30 11:28:20 -07:00
Kconfig treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
Makefile xfs: move xfs_trans_inode.c to libxfs/ 2019-07-15 08:10:18 -07:00
kmem.c xfs: remove unused header files 2019-06-28 19:30:43 -07:00
kmem.h xfs: make mem_to_page available outside of xfs_buf.c 2019-06-28 19:27:19 -07:00
mrlock.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs.h xfs: remove b_last_holder & associated macros 2018-08-12 08:37:31 -07:00
xfs_acl.c xfs: remove unused header files 2019-06-28 19:30:43 -07:00
xfs_acl.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_aops.c for-linus-20190715 2019-07-15 21:20:52 -07:00
xfs_aops.h xfs: remove the unused xfs_count_page_state declaration 2019-06-30 09:05:17 -07:00
xfs_attr_inactive.c xfs: remove unused header files 2019-06-28 19:30:43 -07:00
xfs_attr_list.c xfs: remove unused header files 2019-06-28 19:30:43 -07:00
xfs_bio_io.c xfs: chain bios the right way around in xfs_rw_bdev 2019-07-10 10:04:16 -07:00
xfs_bmap_item.c xfs: remove unused header files 2019-06-28 19:30:43 -07:00
xfs_bmap_item.h xfs: merge xfs_bud_init into xfs_trans_get_bud 2019-06-28 19:27:36 -07:00
xfs_bmap_util.c xfs: remove unused header files 2019-06-28 19:30:43 -07:00
xfs_bmap_util.h xfs: flush removing page cache in xfs_reflink_remap_prep 2018-11-21 10:10:53 -08:00
xfs_buf.c xfs: remove unused header files 2019-06-28 19:30:43 -07:00
xfs_buf.h xfs: add struct xfs_mount pointer to struct xfs_buf 2019-06-28 19:27:29 -07:00
xfs_buf_item.c xfs: remove unused header files 2019-06-28 19:30:43 -07:00
xfs_buf_item.h xfs: remove the xfs_log_item_t typedef 2019-06-28 19:27:33 -07:00
xfs_dir2_readdir.c xfs: remove unused header files 2019-06-28 19:30:43 -07:00
xfs_discard.c xfs: remove unused header files 2019-06-28 19:30:43 -07:00
xfs_discard.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
xfs_dquot.c xfs: create iterator error codes 2019-07-02 09:40:05 -07:00
xfs_dquot.h xfs: remove the debug-only q_transp field from struct xfs_dquot 2019-06-12 08:59:59 -07:00
xfs_dquot_item.c xfs: remove unused header files 2019-06-28 19:30:43 -07:00
xfs_dquot_item.h xfs: remove the xfs_log_item_t typedef 2019-06-28 19:27:33 -07:00
xfs_error.c xfs: add struct xfs_mount pointer to struct xfs_buf 2019-06-28 19:27:29 -07:00
xfs_error.h xfs: Introduce XFS_PTAG_VERIFIER_ERROR panic mask 2019-02-11 16:07:00 -08:00
xfs_export.c xfs: remove unused header files 2019-06-28 19:30:43 -07:00
xfs_export.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_extent_busy.c xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_extent_busy.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_extfree_item.c xfs: remove unused header files 2019-06-28 19:30:43 -07:00
xfs_extfree_item.h xfs: merge xfs_efd_init into xfs_trans_get_efd 2019-06-28 19:27:35 -07:00
xfs_file.c - virtio_pmem: The new virtio_pmem facility introduces a paravirtualized 2019-07-18 10:52:08 -07:00
xfs_filestream.c xfs: remove unused header files 2019-06-28 19:30:43 -07:00
xfs_filestream.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_fsmap.c xfs: remove unused header files 2019-06-28 19:30:43 -07:00
xfs_fsmap.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_fsops.c xfs: remove unused header files 2019-06-28 19:30:43 -07:00
xfs_fsops.h xfs: change some error-less functions to void types 2019-05-01 20:26:30 -07:00
xfs_globals.c xfs: multithreaded iwalk implementation 2019-07-03 07:33:26 -07:00
xfs_health.c xfs: introduce new v5 bulkstat structure 2019-07-03 20:36:26 -07:00
xfs_icache.c xfs: remove unused header files 2019-06-28 19:30:43 -07:00
xfs_icache.h xfs: rename the speculative block allocation reclaim toggle functions 2019-04-26 12:28:55 -07:00
xfs_icreate_item.c xfs: remove unused header files 2019-06-28 19:30:43 -07:00
xfs_icreate_item.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_inode.c xfs: remove unused header files 2019-06-28 19:30:43 -07:00
xfs_inode.h xfs: widen inode delalloc block counter to 64-bits 2019-04-23 08:36:23 -07:00
xfs_inode_item.c xfs: remove unused header files 2019-06-28 19:30:43 -07:00
xfs_inode_item.h xfs: remove the xfs_log_item_t typedef 2019-06-28 19:27:33 -07:00
xfs_ioctl.c New stuff for 5.3: 2019-07-12 17:17:51 -07:00
xfs_ioctl.h xfs: introduce v5 inode group structure 2019-07-03 20:36:27 -07:00
xfs_ioctl32.c xfs: compat_ioctl: use compat_ptr() 2019-08-16 18:42:59 -07:00
xfs_ioctl32.h xfs: remove various bulk request typedef usage 2019-07-03 20:36:25 -07:00
xfs_iomap.c xfs: remove XFS_TRANS_NOFS 2019-06-30 09:05:17 -07:00
xfs_iomap.h xfs: fix SEEK_DATA for speculative COW fork preallocation 2019-02-21 07:55:07 -08:00
xfs_iops.c xfs: remove unused header files 2019-06-28 19:30:43 -07:00
xfs_iops.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_itable.c xfs: fix stack contents leakage in the v1 inumber ioctls 2019-07-28 21:12:32 -07:00
xfs_itable.h xfs: specify AG in bulk req 2019-07-04 07:52:23 -07:00
xfs_iwalk.c xfs: specify AG in bulk req 2019-07-04 07:52:23 -07:00
xfs_iwalk.h xfs: specify AG in bulk req 2019-07-04 07:52:23 -07:00
xfs_linux.h xfs: use bios directly to read and write the log recovery buffers 2019-06-28 19:27:26 -07:00
xfs_log.c fs: xfs: xfs_log: Don't use KM_MAYFAIL at xfs_log_reserve(). 2019-08-03 09:36:43 -07:00
xfs_log.h fs: xfs: xfs_log: Change return type from int to void 2019-07-03 08:21:58 -07:00
xfs_log_cil.c xfs: remove unused header files 2019-06-28 19:30:43 -07:00
xfs_log_priv.h fs: xfs: xfs_log: Change return type from int to void 2019-07-03 08:21:58 -07:00
xfs_log_recover.c fs: xfs: xfs_log: Change return type from int to void 2019-07-03 08:21:58 -07:00
xfs_message.c xfs: remove unused header files 2019-06-28 19:30:43 -07:00
xfs_message.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
xfs_mount.c xfs: remove unused header files 2019-06-28 19:30:43 -07:00
xfs_mount.h xfs: move the log ioend workqueue to struct xlog 2019-06-28 19:27:25 -07:00
xfs_mru_cache.c xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_mru_cache.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_ondisk.h xfs: wire up the v5 inumbers ioctl 2019-07-03 20:36:28 -07:00
xfs_pnfs.c xfs: remove unused header files 2019-06-28 19:30:43 -07:00
xfs_pnfs.h xfs: prepare xfs_break_layouts() for another layout type 2018-05-22 07:19:08 -07:00
xfs_pwork.c xfs: poll waiting for quotacheck 2019-07-03 08:21:58 -07:00
xfs_pwork.h xfs: poll waiting for quotacheck 2019-07-03 08:21:58 -07:00
xfs_qm.c xfs: specify AG in bulk req 2019-07-04 07:52:23 -07:00
xfs_qm.h xfs: widen quota block counters to 64-bit integers 2019-04-23 08:36:23 -07:00
xfs_qm_bhv.c xfs: remove unused header files 2019-06-28 19:30:43 -07:00
xfs_qm_syscalls.c xfs: remove unused header files 2019-06-28 19:30:43 -07:00
xfs_quota.h xfs: kill the xfs_dqtrx_t typedef 2019-04-23 08:36:23 -07:00
xfs_quotaops.c xfs: remove unused header files 2019-06-28 19:30:43 -07:00
xfs_refcount_item.c xfs: remove unused header files 2019-06-28 19:30:43 -07:00
xfs_refcount_item.h xfs: merge xfs_cud_init into xfs_trans_get_cud 2019-06-28 19:27:35 -07:00
xfs_reflink.c xfs: fix reflink source file racing with directio writes 2019-08-18 18:53:25 -07:00
xfs_reflink.h xfs: don't pass iomap flags to xfs_reflink_allocate_cow 2019-02-25 09:04:31 -08:00
xfs_rmap_item.c xfs: remove unused header files 2019-06-28 19:30:43 -07:00
xfs_rmap_item.h xfs: merge xfs_rud_init into xfs_trans_get_rud 2019-06-28 19:27:36 -07:00
xfs_rtalloc.c xfs: remove unused header files 2019-06-28 19:30:43 -07:00
xfs_rtalloc.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_stats.c xfs: remove unused header files 2019-06-28 19:30:43 -07:00
xfs_stats.h xfs: use offsetof() in place of offset macros for __xfsstats 2018-10-18 17:21:39 +11:00
xfs_super.c xfs: remove unused header files 2019-06-28 19:30:43 -07:00
xfs_super.h xfs: include WARN, REPAIR build options in XFS_BUILD_OPTIONS 2019-06-12 08:37:40 -07:00
xfs_symlink.c xfs: remove unused header files 2019-06-28 19:30:43 -07:00
xfs_symlink.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_sysctl.c xfs: remove unused header files 2019-06-28 19:30:43 -07:00
xfs_sysctl.h xfs: multithreaded iwalk implementation 2019-07-03 07:33:26 -07:00
xfs_sysfs.c xfs: multithreaded iwalk implementation 2019-07-03 07:33:26 -07:00
xfs_sysfs.h xfs: convert to SPDX license tags 2018-06-06 14:17:53 -07:00
xfs_trace.c xfs: remove unused header files 2019-06-28 19:30:43 -07:00
xfs_trace.h xfs: multithreaded iwalk implementation 2019-07-03 07:33:26 -07:00
xfs_trans.c xfs: remove XFS_TRANS_NOFS 2019-06-30 09:05:17 -07:00
xfs_trans.h xfs: merge xfs_trans_bmap.c into xfs_bmap_item.c 2019-06-28 19:29:42 -07:00
xfs_trans_ail.c xfs: remove the xfs_log_item_t typedef 2019-06-28 19:27:33 -07:00
xfs_trans_buf.c xfs: remove unused header files 2019-06-28 19:30:43 -07:00
xfs_trans_dquot.c xfs: remove unused header files 2019-06-28 19:30:43 -07:00
xfs_trans_priv.h xfs: don't use xfs_trans_free_items in the commit path 2019-06-28 19:27:31 -07:00
xfs_xattr.c xfs: remove unused header files 2019-06-28 19:30:43 -07:00