Fix:
- a direct IO read/buffered read data corruption
- the associated fallout from the DIO data corruption fix
- collapse range bugs that are potential data corruption issues.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.12 (GNU/Linux)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=tRQo
-----END PGP SIGNATURE-----
Merge tag 'xfs-for-linus-3.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/dgc/linux-xfs
Pull xfs fixes from Dave Chinner:
"The fixes all address recently discovered data corruption issues.
The original Direct IO issue was discovered by Chris Mason @ Facebook
on a production workload which mixed buffered reads with direct reads
and writes IO to the same file. The fix for that exposed other issues
with page invalidation (exposed by millions of fsx operations) failing
due to dirty buffers beyond EOF.
Finally, the collapse_range code could also cause problems due to
racing writeback changing the extent map while it was being shifted
around. The commits for that problem are simple mitigation fixes that
prevent the problem from occuring. A more robust fix for 3.18 that
addresses the underlying problem is currently being worked on by
Brian.
Summary of fixes:
- a direct IO read/buffered read data corruption
- the associated fallout from the DIO data corruption fix
- collapse range bugs that are potential data corruption issues"
* tag 'xfs-for-linus-3.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/dgc/linux-xfs:
xfs: trim eofblocks before collapse range
xfs: xfs_file_collapse_range is delalloc challenged
xfs: don't log inode unless extent shift makes extent modifications
xfs: use ranged writeback and invalidation for direct IO
xfs: don't zero partial page cache pages during O_DIRECT writes
xfs: don't zero partial page cache pages during O_DIRECT writes
xfs: don't dirty buffers beyond EOF
11e9739813