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linux/fs/xfs
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Chris Mason 2f3219f6e4 xfs: don't zero partial page cache pages during O_DIRECT writes 
commit 85e584da32 upstream.

xfs is using truncate_pagecache_range to invalidate the page cache
during DIO reads.  This is different from the other filesystems who
only invalidate pages during DIO writes.

truncate_pagecache_range is meant to be used when we are freeing the
underlying data structs from disk, so it will zero any partial
ranges in the page.  This means a DIO read can zero out part of the
page cache page, and it is possible the page will stay in cache.

buffered reads will find an up to date page with zeros instead of
the data actually on disk.

This patch fixes things by using invalidate_inode_pages2_range
instead.  It preserves the page cache invalidation, but won't zero
any pages.

[dchinner: catch error and warn if it fails. Comment.]

Signed-off-by: Chris Mason <clm@fb.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2014-09-17 09:22:18 -07:00
..
Kconfig xfs: introduce CONFIG_XFS_WARN 2013-05-07 18:45:36 -05:00
kmem.c xfs: use NOIO contexts for vm_map_ram 2014-03-07 16:19:14 +11:00
kmem.h xfs: simplify kmem_{zone_}zalloc 2013-11-06 16:31:27 -06:00
Makefile xfs: abstract the differences in dir2/dir3 via an ops vector 2013-10-30 13:37:38 -05:00
mrlock.h xfs: introduce CONFIG_XFS_WARN 2013-05-07 18:45:36 -05:00
time.h xfs: remove subdirectories 2011-08-12 16:21:35 -05:00
uuid.c xfs: remove subdirectories 2011-08-12 16:21:35 -05:00
uuid.h xfs: add CRC infrastructure 2012-11-19 20:11:24 -06:00
xfs.h xfs: introduce CONFIG_XFS_WARN 2013-05-07 18:45:36 -05:00
xfs_acl.c xfs: return -E2BIG if hit the maximum size limits of ACLs 2014-02-07 15:26:11 +11:00
xfs_acl.h xfs: use generic posix ACL infrastructure 2014-01-25 23:58:21 -05:00
xfs_ag.h xfs: support the XFS_BTNUM_FINOBT free inode btree type 2014-04-24 16:00:52 +10:00
xfs_alloc.c xfs: Fix rounding in xfs_alloc_fix_len() 2014-06-06 16:06:37 +10:00
xfs_alloc.h xfs: create a shared header file for format-related information 2013-10-23 14:11:30 -05:00
xfs_alloc_btree.c xfs: remove unused length arg from alloc_block ops 2014-04-14 19:03:53 +10:00
xfs_alloc_btree.h xfs: decouple inode and bmap btree header files 2013-10-23 16:28:49 -05:00
xfs_aops.c xfs: don't dirty buffers beyond EOF 2014-09-17 09:22:17 -07:00
xfs_aops.h direct-io: Implement generic deferred AIO completions 2013-09-04 09:23:46 -04:00
xfs_attr.c xfs: remove redundant geometry information from xfs_da_state 2014-06-06 15:22:04 +10:00
xfs_attr.h xfs: kill xfs_vnodeops.[ch] 2013-08-12 16:53:39 -05:00
xfs_attr_inactive.c xfs: vectorise encoding/decoding directory headers 2013-10-30 13:47:22 -05:00
xfs_attr_leaf.c xfs: remove redundant geometry information from xfs_da_state 2014-06-06 15:22:04 +10:00
xfs_attr_leaf.h xfs: pass xfs_da_args to xfs_attr_leaf_newentsize 2014-06-06 15:21:27 +10:00
xfs_attr_list.c xfs: introduce directory geometry structure 2014-06-06 15:01:58 +10:00
xfs_attr_remote.c xfs: replace attr LBSIZE with xfs_da_geometry 2014-06-06 15:21:45 +10:00
xfs_attr_remote.h xfs: unify directory/attribute format definitions 2013-10-23 14:21:40 -05:00
xfs_attr_sf.h xfs: convert attr to use unsigned names 2010-01-20 10:47:48 +11:00
xfs_bit.c xfs: fix static and extern sparse warnings 2013-10-30 13:59:56 -05:00
xfs_bit.h xfs: small cleanup in xfs_lowbit64() 2014-06-06 16:04:42 +10:00
xfs_bmap.c xfs: refine the allocation stack switch 2014-07-15 07:08:24 +10:00
xfs_bmap.h xfs: refine the allocation stack switch 2014-07-15 07:08:24 +10:00
xfs_bmap_btree.c xfs: remove unused length arg from alloc_block ops 2014-04-14 19:03:53 +10:00
xfs_bmap_btree.h xfs: remove unused mp arg from xfs_bmdr_maxrecs() 2014-04-14 18:58:51 +10:00
xfs_bmap_util.c xfs: refine the allocation stack switch 2014-07-15 07:08:24 +10:00
xfs_bmap_util.h xfs: refine the allocation stack switch 2014-07-15 07:08:24 +10:00
xfs_btree.c xfs: refine the allocation stack switch 2014-07-15 07:08:24 +10:00
xfs_btree.h Merge branch 'xfs-free-inode-btree' into for-next 2014-05-15 09:37:44 +10:00
xfs_buf.c Merge branch 'xfs-unused-args-cleanup' into for-next 2014-05-15 09:36:35 +10:00
xfs_buf.h Merge branch 'xfs-misc-fixes-3-for-3.16' into for-next 2014-06-10 07:32:56 +10:00
xfs_buf_item.c Merge branch 'xfs-misc-fixes-3-for-3.16' into for-next 2014-06-10 07:32:56 +10:00
xfs_buf_item.h xfs: decouple inode and bmap btree header files 2013-10-23 16:28:49 -05:00
xfs_cksum.h xfs: add CRC infrastructure 2012-11-19 20:11:24 -06:00
xfs_da_btree.c Merge branch 'xfs-da-geom' into for-next 2014-06-10 07:32:41 +10:00
xfs_da_btree.h xfs: remove redundant geometry information from xfs_da_state 2014-06-06 15:22:04 +10:00
xfs_da_format.c xfs: convert m_dirblksize to xfs_da_geometry 2014-06-06 15:15:59 +10:00
xfs_da_format.h xfs: replace attr LBSIZE with xfs_da_geometry 2014-06-06 15:21:45 +10:00
xfs_dinode.h xfs: Use defines for CRC offsets in all cases 2014-02-27 15:15:27 +11:00
xfs_dir2.c Merge branch 'xfs-da-geom' into for-next 2014-06-10 07:32:41 +10:00
xfs_dir2.h xfs: remove mp->m_dir_geo from directory logging 2014-06-06 15:20:54 +10:00
xfs_dir2_block.c xfs: remove mp->m_dir_geo from directory logging 2014-06-06 15:20:54 +10:00
xfs_dir2_data.c xfs: remove mp->m_dir_geo from directory logging 2014-06-06 15:20:54 +10:00
xfs_dir2_leaf.c xfs: remove mp->m_dir_geo from directory logging 2014-06-06 15:20:54 +10:00
xfs_dir2_node.c xfs: remove redundant geometry information from xfs_da_state 2014-06-06 15:22:04 +10:00
xfs_dir2_priv.h xfs: remove mp->m_dir_geo from directory logging 2014-06-06 15:20:54 +10:00
xfs_dir2_readdir.c xfs: fix xfs_da_args sparse warning in xfs_readdir 2014-06-10 07:30:36 +10:00
xfs_dir2_sf.c xfs: convert m_dirblksize to xfs_da_geometry 2014-06-06 15:15:59 +10:00
xfs_discard.c xfs: don't perform discard if the given range length is less than block size 2013-12-10 10:00:33 -06:00
xfs_discard.h xfs: remove subdirectories 2011-08-12 16:21:35 -05:00
xfs_dquot.c xfs: quotacheck leaves dquot buffers without verifiers 2014-09-17 09:22:17 -07:00
xfs_dquot.h xfs: remove dquot hints 2014-05-05 17:30:15 +10:00
xfs_dquot_buf.c xfs: remove unused mp arg from xfs_calc_dquots_per_chunk() 2014-04-14 19:03:34 +10:00
xfs_dquot_item.c xfs: remove the quotaoff log format from the quotaoff log item 2013-12-13 11:34:08 +11:00
xfs_dquot_item.h xfs: remove the quotaoff log format from the quotaoff log item 2013-12-13 11:34:08 +11:00
xfs_error.c xfs: print useful caller information in xfs_error_report 2014-02-27 15:21:37 +11:00
xfs_error.h xfs: add xfs_verifier_error() 2014-02-27 15:21:07 +11:00
xfs_export.c xfs: xfs_commit_metadata returns wrong errno 2014-05-15 09:21:52 +10:00
xfs_export.h xfs: remove subdirectories 2011-08-12 16:21:35 -05:00
xfs_extent_busy.c xfs: decouple inode and bmap btree header files 2013-10-23 16:28:49 -05:00
xfs_extent_busy.h xfs: decouple inode and bmap btree header files 2013-10-23 16:28:49 -05:00
xfs_extfree_item.c xfs: format log items write directly into the linear CIL buffer 2013-12-13 11:34:02 +11:00
xfs_extfree_item.h xfs: split out EFI/EFD log item format definition 2013-08-12 16:07:13 -05:00
xfs_file.c xfs: don't zero partial page cache pages during O_DIRECT writes 2014-09-17 09:22:18 -07:00
xfs_filestream.c xfs: add filestream allocator tracepoints 2014-04-23 07:11:52 +10:00
xfs_filestream.h xfs: add filestream allocator tracepoints 2014-04-23 07:11:52 +10:00
xfs_format.h xfs: support the XFS_BTNUM_FINOBT free inode btree type 2014-04-24 16:00:52 +10:00
xfs_fs.h xfs: report finobt status in fs geometry 2014-04-24 16:01:41 +10:00
xfs_fsops.c Merge branch 'xfs-da-geom' into for-next 2014-06-10 07:32:41 +10:00
xfs_fsops.h xfs: ensure log covering transactions are synchronous 2011-01-11 20:28:17 -06:00
xfs_globals.c xfs: add background scanning to clear eofblocks inodes 2012-11-08 15:34:59 -06:00
xfs_ialloc.c Merge branch 'xfs-misc-fixes-3-for-3.16' into for-next 2014-06-10 07:32:56 +10:00
xfs_ialloc.h xfs: fix compile error when libxfs header used in C++ code 2014-05-20 08:52:21 +10:00
xfs_ialloc_btree.c Merge branch 'xfs-free-inode-btree' into for-next 2014-05-15 09:37:44 +10:00
xfs_ialloc_btree.h xfs: refactor xfs_ialloc_btree.c to support multiple inobt numbers 2014-04-24 16:00:50 +10:00
xfs_icache.c xfs: remove unused pag ptr arg from iterator execute functions 2014-04-14 19:04:19 +10:00
xfs_icache.h xfs: remove unused pag ptr arg from iterator execute functions 2014-04-14 19:04:19 +10:00
xfs_icreate_item.c xfs: format log items write directly into the linear CIL buffer 2013-12-13 11:34:02 +11:00
xfs_icreate_item.h xfs: separate icreate log format definitions from xfs_icreate_item.h 2013-08-12 16:10:35 -05:00
xfs_inode.c Merge branch 'xfs-feature-bit-cleanup' into for-next 2014-05-20 08:57:02 +10:00
xfs_inode.h Merge branch 'xfs-feature-bit-cleanup' into for-next 2014-05-20 08:57:02 +10:00
xfs_inode_buf.c xfs: turn NLINK feature on by default 2014-05-20 07:46:40 +10:00
xfs_inode_buf.h xfs: create a shared header file for format-related information 2013-10-23 14:11:30 -05:00
xfs_inode_fork.c xfs: remove unused bp arg from xfs_iflush_fork() 2014-04-14 19:04:46 +10:00
xfs_inode_fork.h xfs: remove unused bp arg from xfs_iflush_fork() 2014-04-14 19:04:46 +10:00
xfs_inode_item.c xfs: turn NLINK feature on by default 2014-05-20 07:46:40 +10:00
xfs_inode_item.h xfs: remove the inode log format from the inode log item 2013-12-13 11:34:05 +11:00
xfs_inum.h xfs: move xfsagino_t to xfs_types.h 2012-05-14 16:20:54 -05:00
xfs_ioctl.c xfs: update for 3.16-rc1 2014-06-11 09:03:47 -07:00
xfs_ioctl.h xfs: consolidate extent swap code 2013-08-12 16:56:06 -05:00
xfs_ioctl32.c xfs: Fix wrong error codes being returned 2014-05-05 17:30:20 +10:00
xfs_ioctl32.h xfs: remove subdirectories 2011-08-12 16:21:35 -05:00
xfs_iomap.c xfs: refine the allocation stack switch 2014-07-15 07:08:24 +10:00
xfs_iomap.h xfs: get rid of count from xfs_iomap_write_allocate() 2013-10-01 15:42:34 -05:00
xfs_iops.c Merge branch 'xfs-misc-fixes-1-for-3.16' into for-next 2014-05-15 09:38:15 +10:00
xfs_iops.h xfs: use generic posix ACL infrastructure 2014-01-25 23:58:21 -05:00
xfs_itable.c xfs: refactor xfs_ialloc_btree.c to support multiple inobt numbers 2014-04-24 16:00:50 +10:00
xfs_itable.h xfs: remove block number from inode lookup code 2010-06-24 11:35:17 +10:00
xfs_linux.h xfs: add xfs_verifier_error() 2014-02-27 15:21:07 +11:00
xfs_log.c Merge branch 'xfs-misc-fixes-3-for-3.16' into for-next 2014-06-10 07:32:56 +10:00
xfs_log.h xfs: log vector rounding leaks log space 2014-05-20 08:18:09 +10:00
xfs_log_cil.c Merge branch 'xfs-misc-fixes-2-for-3.16' into for-next 2014-05-20 08:56:00 +10:00
xfs_log_format.h xfs: create a shared header file for format-related information 2013-10-23 14:11:30 -05:00
xfs_log_priv.h xfs: decouple log and transaction headers 2013-10-23 16:17:44 -05:00
xfs_log_recover.c xfs: ensure verifiers are attached to recovered buffers 2014-09-17 09:22:17 -07:00
xfs_log_recover.h xfs: Clean up XFS_BLI_* flag namespace 2010-05-24 10:33:39 -05:00
xfs_log_rlimit.c xfs: use xfs_da_geometry for block size in attr code 2014-06-06 15:21:10 +10:00
xfs_message.c xfs: decouple log and transaction headers 2013-10-23 16:17:44 -05:00
xfs_message.h xfs: introduce CONFIG_XFS_WARN 2013-05-07 18:45:36 -05:00
xfs_mount.c Merge branch 'xfs-misc-fixes-3-for-3.16' into for-next 2014-06-10 07:32:56 +10:00
xfs_mount.h xfs: move node entry counts to xfs_da_geometry 2014-06-06 15:20:02 +10:00
xfs_mru_cache.c xfs: embedd mru_elem into parent structure 2014-04-23 07:11:51 +10:00
xfs_mru_cache.h xfs: embedd mru_elem into parent structure 2014-04-23 07:11:51 +10:00
xfs_qm.c xfs: quotacheck leaves dquot buffers without verifiers 2014-09-17 09:22:17 -07:00
xfs_qm.h xfs: integrate xfs_quota_priv header file to xfs_qm 2013-12-06 14:16:33 -06:00
xfs_qm_bhv.c xfs: decouple inode and bmap btree header files 2013-10-23 16:28:49 -05:00
xfs_qm_syscalls.c Merge branch 'xfs-misc-fixes-1-for-3.16' into for-next 2014-05-15 09:38:15 +10:00
xfs_quota.h xfs: split dquot buffer operations out 2013-10-23 14:28:35 -05:00
xfs_quota_defs.h xfs: remove unused mp arg from xfs_calc_dquots_per_chunk() 2014-04-14 19:03:34 +10:00
xfs_quotaops.c xfs: fix Q_XQUOTARM ioctl 2014-05-05 17:25:50 +10:00
xfs_rtalloc.c xfs: use tr_growrtalloc for growing rt files 2014-02-07 14:53:50 +11:00
xfs_rtalloc.h xfs: split xfs_rtalloc.c for userspace sanity 2013-10-23 17:16:32 -05:00
xfs_rtbitmap.c xfs: kill xfs_buf_geterror() 2014-06-06 16:02:12 +10:00
xfs_sb.c xfs: null unused quota inodes when quota is on 2014-07-15 07:28:41 +10:00
xfs_sb.h Merge branch 'xfs-feature-bit-cleanup' into for-next 2014-05-20 08:57:02 +10:00
xfs_shared.h xfs: remove unused xfs_mount arg from xfs_symlink_hdr_ok() 2014-04-14 19:05:43 +10:00
xfs_stats.c xfs: support the XFS_BTNUM_FINOBT free inode btree type 2014-04-24 16:00:52 +10:00
xfs_stats.h xfs: support the XFS_BTNUM_FINOBT free inode btree type 2014-04-24 16:00:52 +10:00
xfs_super.c Merge branch 'xfs-filestreams-lookup' into for-next 2014-05-15 09:36:59 +10:00
xfs_super.h xfs: xfs_sync_data is redundant. 2012-10-17 12:01:25 -05:00
xfs_symlink.c xfs: convert m_dirblkfsbs to xfs_da_geometry 2014-06-06 15:14:11 +10:00
xfs_symlink.h xfs: push down inactive transaction mgmt for remote symlinks 2013-10-08 14:53:02 -05:00
xfs_symlink_remote.c xfs: remove unused xfs_mount arg from xfs_symlink_hdr_ok() 2014-04-14 19:05:43 +10:00
xfs_sysctl.c xfs: Convert use of typedef ctl_table to struct ctl_table 2013-06-17 17:42:25 -05:00
xfs_sysctl.h xfs: add background scanning to clear eofblocks inodes 2012-11-08 15:34:59 -06:00
xfs_trace.c xfs: add filestream allocator tracepoints 2014-04-23 07:11:52 +10:00
xfs_trace.h Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2014-06-12 10:30:18 -07:00
xfs_trans.c xfs: remove unused ail pointer arg from xfs_trans_ail_cursor_done() 2014-04-14 19:06:05 +10:00
xfs_trans.h xfs: format log items write directly into the linear CIL buffer 2013-12-13 11:34:02 +11:00
xfs_trans_ail.c xfs: remove unused ail pointer arg from xfs_trans_ail_cursor_done() 2014-04-14 19:06:05 +10:00
xfs_trans_buf.c xfs: don't leak EFSBADCRC to userspace 2014-03-07 16:19:14 +11:00
xfs_trans_dquot.c xfs: fix the comment explaining xfs_trans_dqlockedjoin 2013-12-04 14:26:57 -06:00
xfs_trans_extfree.c xfs: decouple log and transaction headers 2013-10-23 16:17:44 -05:00
xfs_trans_inode.c xfs: open code inc_inode_iversion when logging an inode 2013-11-18 09:42:08 -06:00
xfs_trans_priv.h xfs: remove unused ail pointer arg from xfs_trans_ail_cursor_done() 2014-04-14 19:06:05 +10:00
xfs_trans_resv.c xfs: convert m_dirblksize to xfs_da_geometry 2014-06-06 15:15:59 +10:00
xfs_trans_resv.h Merge branch 'xfs-O_TMPFILE-support' into for-next 2014-03-13 19:14:43 +11:00
xfs_trans_space.h xfs: convert m_dirblkfsbs to xfs_da_geometry 2014-06-06 15:14:11 +10:00
xfs_types.h xfs: support the XFS_BTNUM_FINOBT free inode btree type 2014-04-24 16:00:52 +10:00
xfs_vnode.h xfs: remove unused FI_ flags 2013-12-04 14:11:05 -06:00
xfs_xattr.c xfs: use generic posix ACL infrastructure 2014-01-25 23:58:21 -05:00