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0d085a529b
kernel_optimize_test/fs/xfs
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Dave Chinner 0d085a529b xfs: ensure WB_SYNC_ALL writeback handles partial pages correctly 
XFS has been having trouble with stray delayed allocation extents
beyond EOF for a long time. Recent changes to the collapse range
code has triggered erroneous EBUSY errors on page invalidtion for
block size smaller than page size filesystems. These
have been caused by dirty buffers beyond EOF on a partial page which
do not get written to disk during a sync.

The issue is that write-ahead in xfs_cluster_write() finds such a
partial page and handles it by leaving the page dirty but pushing it
into a writeback state. This used to work just fine, as the
write_cache_pages() code would then find the dirty partial page in
the next mapping tree lookup as the dirty tag is still set.

Unfortunately, when we moved to a mark and sweep approach to
writeback to fix other writeback sync issues, we broken this. THe
act of marking the page as under writeback now clears the TOWRITE
tag in the radix tree, even though the page is still dirty. This
causes the TOWRITE tag to be cleared, and hence the next lookup on
the mapping tree does not find the dirty partial page and so doesn't
try to write it again.

This same writeback bug was found recently in ext4 and fixed in
commit 1c8349a ("ext4: fix data integrity sync in ordered mode")
without communication to the wider filesystem community. We can use
exactly the same fix here so the TOWRITE flag is not cleared on
partial page writes.

cc: stable@vger.kernel.org # dependent on 1c8349a171
Root-cause-found-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
2014-09-23 15:36:27 +10:00
..
libxfs xfs: don't log inode unless extent shift makes extent modifications 2014-09-02 12:12:53 +10:00
Kconfig xfs: require 64-bit sector_t 2014-07-30 09:12:05 +10:00
kmem.c xfs: use NOIO contexts for vm_map_ram 2014-03-07 16:19:14 +11:00
kmem.h
Makefile xfs: add xfs_mount sysfs kobject 2014-07-15 08:07:01 +10:00
mrlock.h
time.h
uuid.c
uuid.h
xfs_acl.c xfs: global error sign conversion 2014-06-25 14:58:08 +10:00
xfs_acl.h xfs: use generic posix ACL infrastructure 2014-01-25 23:58:21 -05:00
xfs_aops.c xfs: ensure WB_SYNC_ALL writeback handles partial pages correctly 2014-09-23 15:36:27 +10:00
xfs_aops.h
xfs_attr_inactive.c xfs: global error sign conversion 2014-06-25 14:58:08 +10:00
xfs_attr_list.c xfs: global error sign conversion 2014-06-25 14:58:08 +10:00
xfs_attr.h
xfs_bit.c
xfs_bmap_util.c xfs: trim eofblocks before collapse range 2014-09-02 12:12:53 +10:00
xfs_bmap_util.h xfs: refine the allocation stack switch 2014-07-15 07:08:24 +10:00
xfs_buf_item.c xfs: global error sign conversion 2014-06-25 14:58:08 +10:00
xfs_buf_item.h
xfs_buf.c xfs: catch buffers written without verifiers attached 2014-08-04 12:42:40 +10:00
xfs_buf.h xfs: global error sign conversion 2014-06-25 14:58:08 +10:00
xfs_dir2_readdir.c xfs: global error sign conversion 2014-06-25 14:58:08 +10:00
xfs_discard.c xfs: global error sign conversion 2014-06-25 14:58:08 +10:00
xfs_discard.h
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_dquot.c xfs: quotacheck leaves dquot buffers without verifiers 2014-08-04 12:43:26 +10:00
xfs_dquot.h xfs: run an eofblocks scan on ENOSPC/EDQUOT 2014-07-24 19:49:28 +10:00
xfs_error.c xfs: global error sign conversion 2014-06-25 14:58:08 +10:00
xfs_error.h xfs: global error sign conversion 2014-06-25 14:58:08 +10:00
xfs_export.c xfs: global error sign conversion 2014-06-25 14:58:08 +10:00
xfs_export.h
xfs_extent_busy.c
xfs_extent_busy.h
xfs_extfree_item.c xfs: global error sign conversion 2014-06-25 14:58:08 +10:00
xfs_extfree_item.h
xfs_file.c xfs: use ranged writeback and invalidation for direct IO 2014-09-02 12:12:53 +10:00
xfs_filestream.c xfs: global error sign conversion 2014-06-25 14:58:08 +10:00
xfs_filestream.h xfs: add filestream allocator tracepoints 2014-04-23 07:11:52 +10:00
xfs_fs.h Merge branch 'xfs-misc-fixes-3.17-1' into for-next 2014-08-04 13:54:14 +10:00
xfs_fsops.c xfs: global error sign conversion 2014-06-25 14:58:08 +10:00
xfs_fsops.h
xfs_globals.c
xfs_icache.c xfs: run an eofblocks scan on ENOSPC/EDQUOT 2014-07-24 19:49:28 +10:00
xfs_icache.h xfs: run an eofblocks scan on ENOSPC/EDQUOT 2014-07-24 19:49:28 +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_inode_item.c xfs: global error sign conversion 2014-06-25 14:58:08 +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_inode.c xfs: kill VN_DIRTY() 2014-08-04 13:22:49 +10:00
xfs_inode.h xfs: kill xfs_vnode.h 2014-08-04 13:28:20 +10:00
xfs_ioctl.c Merge branch 'xfs-misc-fixes-3.17-2' into for-next 2014-08-04 13:55:27 +10:00
xfs_ioctl.h
xfs_ioctl32.c Merge branch 'xfs-misc-fixes-3.17-2' into for-next 2014-08-04 13:55:27 +10:00
xfs_ioctl32.h
xfs_iomap.c Merge branch 'xfs-quota-eofblocks-scan' into for-next 2014-08-04 13:53:47 +10:00
xfs_iomap.h
xfs_iops.c xfs: fix rounding error of fiemap length parameter 2014-08-04 11:35:35 +10:00
xfs_iops.h xfs: use generic posix ACL infrastructure 2014-01-25 23:58:21 -05:00
xfs_itable.c xfs: introduce xfs_bulkstat_ag_ichunk 2014-08-04 11:22:31 +10:00
xfs_itable.h xfs: introduce xfs_bulkstat_ag_ichunk 2014-08-04 11:22:31 +10:00
xfs_linux.h Merge branch 'xfs-misc-fixes-3.17-2' into for-next 2014-08-04 13:55:27 +10:00
xfs_log_cil.c xfs: fix cil push sequence after log recovery 2014-07-24 20:49:40 +10:00
xfs_log_priv.h xfs: add xlog sysfs kobject and attribute handlers 2014-07-15 08:07:29 +10:00
xfs_log_recover.c xfs: dquot recovery needs verifiers 2014-08-04 12:59:31 +10:00
xfs_log.c Merge branch 'xfs-misc-fixes-3.17-2' into for-next 2014-08-04 13:55:27 +10:00
xfs_log.h xfs: log vector rounding leaks log space 2014-05-20 08:18:09 +10:00
xfs_message.c
xfs_message.h
xfs_mount.c Merge branch 'xfs-misc-fixes-3.17-2' into for-next 2014-08-04 13:55:27 +10:00
xfs_mount.h xfs: add xfs_mount sysfs kobject 2014-07-15 08:07:01 +10:00
xfs_mru_cache.c xfs: global error sign conversion 2014-06-25 14:58:08 +10:00
xfs_mru_cache.h xfs: embedd mru_elem into parent structure 2014-04-23 07:11:51 +10:00
xfs_qm_bhv.c xfs: global error sign conversion 2014-06-25 14:58:08 +10:00
xfs_qm_syscalls.c xfs: global error sign conversion 2014-06-25 14:58:08 +10:00
xfs_qm.c Merge branch 'xfs-misc-fixes-3.17-2' into for-next 2014-08-04 13:55:27 +10:00
xfs_qm.h xfs: mark xfs_qm_quotacheck as static 2014-07-24 20:49:57 +10:00
xfs_quota.h
xfs_quotaops.c xfs: fix uflags detection at xfs_fs_rm_xquota 2014-07-24 21:27:17 +10:00
xfs_rtalloc.c xfs: require 64-bit sector_t 2014-07-30 09:12:05 +10:00
xfs_rtalloc.h xfs: global error sign conversion 2014-06-25 14:58:08 +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-misc-fixes-3.17-1' into for-next 2014-08-04 13:54:14 +10:00
xfs_super.h xfs: require 64-bit sector_t 2014-07-30 09:12:05 +10:00
xfs_symlink.c xfs: global error sign conversion 2014-06-25 14:58:08 +10:00
xfs_symlink.h
xfs_sysctl.c
xfs_sysctl.h
xfs_sysfs.c xfs: add log attributes for log lsn and grant head data 2014-07-15 08:07:48 +10:00
xfs_sysfs.h xfs: add xlog sysfs kobject and attribute handlers 2014-07-15 08:07:29 +10:00
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_ail.c xfs: global error sign conversion 2014-06-25 14:58:08 +10:00
xfs_trans_buf.c xfs: global error sign conversion 2014-06-25 14:58:08 +10:00
xfs_trans_dquot.c xfs: global error sign conversion 2014-06-25 14:58:08 +10:00
xfs_trans_extfree.c
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.c xfs: global error sign conversion 2014-06-25 14:58:08 +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_types.h xfs: require 64-bit sector_t 2014-07-30 09:12:05 +10:00
xfs_xattr.c xfs: global error sign conversion 2014-06-25 14:58:08 +10:00
xfs.h