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linux/fs/xfs
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Chris Mason d96dbb0691 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>
2014-09-17 09:04:01 -07:00
..
Kconfig xfs: introduce CONFIG_XFS_WARN 2013-05-07 18:45:36 -05:00
kmem.c xfs: switch to proper __bitwise type for KM_... flags 2012-05-29 23:28:32 -04:00
kmem.h xfs: switch to proper __bitwise type for KM_... flags 2012-05-29 23:28:32 -04:00
Makefile xfs: split remote attribute code out 2013-04-27 12:49:32 -05:00
mrlock.h xfs: introduce CONFIG_XFS_WARN 2013-05-07 18:45:36 -05:00
time.h
uuid.c
uuid.h xfs: add CRC infrastructure 2012-11-19 20:11:24 -06:00
xfs_acl.c xfs: increase number of ACL entries for V5 superblocks 2013-06-06 10:52:15 -05:00
xfs_acl.h xfs: increase number of ACL entries for V5 superblocks 2013-06-06 10:52:15 -05:00
xfs_ag.h xfs: add CRC checks to the AGI 2013-04-21 14:57:43 -05:00
xfs_alloc_btree.c xfs: introduce CONFIG_XFS_WARN 2013-05-07 18:45:36 -05:00
xfs_alloc_btree.h xfs: add support for large btree blocks 2013-04-21 14:53:46 -05:00
xfs_alloc.c xfs: buffer type overruns blf_flags field 2013-04-27 13:01:58 -05:00
xfs_alloc.h xfs: convert buffer verifiers to an ops structure. 2012-11-15 21:35:12 -06:00
xfs_aops.c xfs: don't dirty buffers beyond EOF 2014-09-17 09:04:01 -07:00
xfs_aops.h Prefix IO_XX flags with XFS_IO_XX to avoid namespace colision. 2012-07-22 11:00:55 -05:00
xfs_attr_leaf.c xfs: fix remote attribute invalidation for a leaf 2013-06-06 10:50:52 -05:00
xfs_attr_leaf.h xfs: fix implicit padding in directory and attr CRC formats 2013-06-14 15:59:16 -05:00
xfs_attr_remote.c xfs: rework remote attr CRCs 2013-05-30 17:26:31 -05:00
xfs_attr_remote.h xfs: rework remote attr CRCs 2013-05-30 17:26:31 -05:00
xfs_attr_sf.h
xfs_attr.c xfs: split remote attribute code out 2013-04-27 12:49:32 -05:00
xfs_attr.h xfs: split remote attribute code out 2013-04-27 12:49:32 -05:00
xfs_bit.c
xfs_bit.h
xfs_bmap_btree.c xfs: introduce CONFIG_XFS_WARN 2013-05-07 18:45:36 -05:00
xfs_bmap_btree.h xfs: add support for large btree blocks 2013-04-21 14:53:46 -05:00
xfs_bmap.c xfs: buffer type overruns blf_flags field 2013-04-27 13:01:58 -05:00
xfs_bmap.h xfs: move allocation stack switch up to xfs_bmapi_allocate 2012-10-18 17:42:48 -05:00
xfs_btree.c xfs: ensure btree root split sets blkno correctly 2013-06-14 15:59:31 -05:00
xfs_btree.h xfs: introduce CONFIG_XFS_WARN 2013-05-07 18:45:36 -05:00
xfs_buf_item.c xfs: fix split buffer vector log recovery support 2013-05-30 17:18:01 -05:00
xfs_buf_item.h xfs: buffer type overruns blf_flags field 2013-04-27 13:01:58 -05:00
xfs_buf.c xfs: rework remote attr CRCs 2013-05-30 17:26:31 -05:00
xfs_buf.h xfs: use b_maps[] for discontiguous buffers 2013-01-16 16:07:11 -06:00
xfs_cksum.h xfs: add CRC infrastructure 2012-11-19 20:11:24 -06:00
xfs_da_btree.c xfs: fix directory hash ordering bug 2014-05-06 07:55:28 -07:00
xfs_da_btree.h xfs: add buffer types to directory and attribute buffers 2013-04-27 13:01:06 -05:00
xfs_dfrag.c xfs: disable swap extents ioctl on CRC enabled filesystems 2013-05-30 17:20:08 -05:00
xfs_dfrag.h
xfs_dinode.h xfs: add version 3 inode format with CRCs 2013-04-21 15:03:33 -05:00
xfs_dir2_block.c xfs: buffer type overruns blf_flags field 2013-04-27 13:01:58 -05:00
xfs_dir2_data.c xfs: buffer type overruns blf_flags field 2013-04-27 13:01:58 -05:00
xfs_dir2_format.h xfs: fix implicit padding in directory and attr CRC formats 2013-06-14 15:59:16 -05:00
xfs_dir2_leaf.c xfs: fix missing KM_NOFS tags to keep lockdep happy 2013-05-24 16:29:15 -05:00
xfs_dir2_node.c xfs: fix dir3 freespace block corruption 2013-05-30 17:22:54 -05:00
xfs_dir2_priv.h xfs: add buffer types to directory and attribute buffers 2013-04-27 13:01:06 -05:00
xfs_dir2_sf.c xfs: shortform directory offsets change for dir3 format 2013-04-27 12:24:32 -05:00
xfs_dir2.c xfs: remove struct xfs_dabuf and infrastructure 2012-07-01 14:50:07 -05:00
xfs_dir2.h
xfs_discard.c xfs: check for possible overflow in xfs_ioc_trim 2012-08-23 14:48:44 -05:00
xfs_discard.h
xfs_dquot_item.c xfs: clean up xfs_bit.h includes 2012-05-14 16:21:00 -05:00
xfs_dquot_item.h
xfs_dquot.c xfs: quotacheck leaves dquot buffers without verifiers 2014-09-17 09:04:01 -07:00
xfs_dquot.h xfs: xfs_dquot prealloc throttling watermarks and low free space 2013-03-22 16:06:30 -05:00
xfs_error.c xfs: increase hexdump output in xfs_corruption_error 2013-04-21 14:48:41 -05:00
xfs_error.h
xfs_export.c fs: encode_fh: return FILEID_INVALID if invalid fid_type 2013-02-26 02:46:10 -05:00
xfs_export.h
xfs_extent_busy.c xfs: make xfs_extent_busy_trim not static 2012-05-14 16:21:04 -05:00
xfs_extent_busy.h xfs: make xfs_extent_busy_trim not static 2012-05-14 16:21:04 -05:00
xfs_extfree_item.c xfs: Don't reference the EFI after it is freed 2013-05-24 16:27:57 -05:00
xfs_extfree_item.h xfs: don't free EFIs before the EFDs are committed 2013-04-05 13:25:35 -05:00
xfs_file.c xfs: don't zero partial page cache pages during O_DIRECT writes 2014-09-17 09:04:01 -07:00
xfs_filestream.c
xfs_filestream.h
xfs_fs.h xfs: add fsgeom flag for v5 superblock support. 2013-05-30 17:19:45 -05:00
xfs_fsops.c xfs: growfs overruns AGFL buffer on V4 filesystems 2013-12-20 07:45:08 -08:00
xfs_fsops.h
xfs_globals.c xfs: add background scanning to clear eofblocks inodes 2012-11-08 15:34:59 -06:00
xfs_ialloc_btree.c xfs: introduce CONFIG_XFS_WARN 2013-05-07 18:45:36 -05:00
xfs_ialloc_btree.h xfs: add support for large btree blocks 2013-04-21 14:53:46 -05:00
xfs_ialloc.c xfs: buffer type overruns blf_flags field 2013-04-27 13:01:58 -05:00
xfs_ialloc.h xfs: convert buffer verifiers to an ops structure. 2012-11-15 21:35:12 -06:00
xfs_icache.c xfs: add background scanning to clear eofblocks inodes 2012-11-08 15:34:59 -06:00
xfs_icache.h xfs: add background scanning to clear eofblocks inodes 2012-11-08 15:34:59 -06:00
xfs_inode_item.c xfs: add version 3 inode format with CRCs 2013-04-21 15:03:33 -05:00
xfs_inode_item.h xfs remove the XFS_TRANS_DEBUG routines 2012-12-17 16:29:00 -06:00
xfs_inode.c xfs: inode unlinked list needs to recalculate the inode CRC 2013-06-06 10:51:19 -05:00
xfs_inode.h xfs: add version 3 inode format with CRCs 2013-04-21 15:03:33 -05:00
xfs_inum.h xfs: move xfsagino_t to xfs_types.h 2012-05-14 16:20:54 -05:00
xfs_ioctl.c xfs: underflow bug in xfs_attrlist_by_handle() 2013-12-20 07:45:08 -08:00
xfs_ioctl.h
xfs_ioctl32.c xfs: underflow bug in xfs_attrlist_by_handle() 2013-12-20 07:45:08 -08:00
xfs_ioctl32.h
xfs_iomap.c xfs: xfs_iomap_prealloc_size() tracepoint 2013-03-22 16:07:56 -05:00
xfs_iomap.h
xfs_iops.c xfs: kill suid/sgid through the truncate path. 2013-05-30 17:17:35 -05:00
xfs_iops.h
xfs_itable.c xfs: convert buffer verifiers to an ops structure. 2012-11-15 21:35:12 -06:00
xfs_itable.h
xfs_linux.h xfs: introduce CONFIG_XFS_WARN 2013-05-07 18:45:36 -05:00
xfs_log_cil.c xfs: fix missing KM_NOFS tags to keep lockdep happy 2013-05-24 16:29:15 -05:00
xfs_log_priv.h xfs: Remove the obsolete XLOG_CIL_HARD_SPACE_LIMIT() macros 2013-04-16 13:18:33 -05:00
xfs_log_recover.c xfs: don't shutdown log recovery on validation errors 2013-06-14 15:59:45 -05:00
xfs_log_recover.h
xfs_log.c xfs: rename random32() to prandom_u32() 2013-03-07 12:33:57 -06:00
xfs_log.h xfs: xfs_quiesce_attr() should quiesce the log like unmount 2012-10-17 13:39:14 -05:00
xfs_message.c xfs: introduce CONFIG_XFS_WARN 2013-05-07 18:45:36 -05:00
xfs_message.h xfs: introduce CONFIG_XFS_WARN 2013-05-07 18:45:36 -05:00
xfs_mount.c xfs: don't emit v5 superblock warnings on write 2013-06-14 15:58:47 -05:00
xfs_mount.h xfs: add CRC checks to the superblock 2013-04-27 13:03:12 -05:00
xfs_mru_cache.c
xfs_mru_cache.h
xfs_qm_bhv.c xfs: Remove boolean_t typedef completely. 2013-01-17 17:32:57 -06:00
xfs_qm_syscalls.c xfs: avoid nesting transactions in xfs_qm_scall_setqlim() 2013-05-30 17:10:56 -05:00
xfs_qm.c xfs: quotacheck leaves dquot buffers without verifiers 2014-09-17 09:04:01 -07:00
xfs_qm.h xfs: add CRC checks for quota blocks 2013-04-21 14:58:22 -05:00
xfs_quota_priv.h
xfs_quota.h xfs: rework dquot CRCs 2013-06-06 10:50:35 -05:00
xfs_quotaops.c userns: Convert qutoactl 2012-09-18 01:01:39 -07:00
xfs_rename.c xfs: move xfsagino_t to xfs_types.h 2012-05-14 16:20:54 -05:00
xfs_rtalloc.c xfs: uncached buffer reads need to return an error 2012-11-15 21:34:05 -06:00
xfs_rtalloc.h
xfs_sb.h xfs: implement extended feature masks 2013-04-27 13:05:18 -05:00
xfs_stats.c
xfs_stats.h
xfs_super.c xfs: disable noattr2/attr2 mount options for CRC enabled filesystems 2013-06-06 10:51:34 -05:00
xfs_super.h xfs: xfs_sync_data is redundant. 2012-10-17 12:01:25 -05:00
xfs_symlink.c xfs: fix incorrect remote symlink block count 2013-05-30 17:19:07 -05:00
xfs_symlink.h xfs: add CRC checks to remote symlinks 2013-04-27 11:49:28 -05:00
xfs_sysctl.c xfs: add background scanning to clear eofblocks inodes 2012-11-08 15:34:59 -06:00
xfs_sysctl.h xfs: add background scanning to clear eofblocks inodes 2012-11-08 15:34:59 -06:00
xfs_trace.c xfs: add CRCs to dir2/da node blocks 2013-04-27 12:33:38 -05:00
xfs_trace.h xfs: xfs_iomap_prealloc_size() tracepoint 2013-03-22 16:07:56 -05:00
xfs_trans_ail.c xfs remove the XFS_TRANS_DEBUG routines 2012-12-17 16:29:00 -06:00
xfs_trans_buf.c xfs: buffer type overruns blf_flags field 2013-04-27 13:01:58 -05:00
xfs_trans_dquot.c xfs: pass xfs_dquot to xfs_qm_adjust_dqlimits() instead of xfs_disk_dquot_t 2013-03-22 16:05:52 -05:00
xfs_trans_extfree.c xfs: move xfsagino_t to xfs_types.h 2012-05-14 16:20:54 -05:00
xfs_trans_inode.c xfs remove the XFS_TRANS_DEBUG routines 2012-12-17 16:29:00 -06:00
xfs_trans_priv.h xfs: re-enable xfsaild idle mode and fix associated races 2012-07-29 16:27:57 -05:00
xfs_trans_space.h
xfs_trans.c xfs: refactor space log reservation for XFS_TRANS_ATTR_SET 2013-02-01 14:56:31 -06:00
xfs_trans.h xfs: introduce CONFIG_XFS_WARN 2013-05-07 18:45:36 -05:00
xfs_types.h xfs: Remove boolean_t typedef completely. 2013-01-17 17:32:57 -06:00
xfs_utils.c xfs: remove the alloc_done argument to xfs_dialloc 2012-07-29 16:00:31 -05:00
xfs_utils.h
xfs_vnode.h
xfs_vnodeops.c xfs: fix rounding in xfs_free_file_space 2013-05-24 16:27:41 -05:00
xfs_vnodeops.h xfs: byte range granularity for XFS_IOC_ZERO_RANGE 2012-11-29 14:21:46 -06:00
xfs_xattr.c
xfs.h xfs: introduce CONFIG_XFS_WARN 2013-05-07 18:45:36 -05:00