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380f4f3 xfs: improve ioend error handling
05d3202 xfs: avoid direct I/O write vs buffered I/O race
b73d8f7 xfs: avoid synchronous transactions when deleting attr blocks
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commit 380f4f32878f67ce53c407b16c1deb6dff156731
Author: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Date: Wed Aug 24 05:59:25 2011 +0000
xfs: improve ioend error handling
Return unwritten extent conversion errors to aio_complete.
Skip both unwritten extent conversion and size updates if we had an
I/O error or the filesystem has been shut down.
Return -EIO to the aio/buffer completion handlers in case of a
forced shutdown.
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
Reviewed-by: Dave Chinner <dchinner@xxxxxxxxxx>
Signed-off-by: Alex Elder <aelder@xxxxxxx>
commit 05d3202e28eb437a185d6c56fbf8fa8e1f638e6e
Author: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Date: Sat Aug 27 14:42:53 2011 +0000
xfs: avoid direct I/O write vs buffered I/O race
Currently a buffered reader or writer can add pages to the pagecache
while we are waiting for the iolock in xfs_file_dio_aio_write. Prevent
this by re-checking mapping->nrpages after we got the iolock, and if
nessecary upgrade the lock to exclusive mode. To simplify this a bit
only take the ilock inside of xfs_file_aio_write_checks.
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
Reviewed-by: Dave Chinner <dchinner@xxxxxxxxxx>
Signed-off-by: Alex Elder <aelder@xxxxxxx>
commit b73d8f7667aa82ece204a9a2e5467b54a8ecd059
Author: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Date: Sat Aug 27 14:45:11 2011 +0000
xfs: avoid synchronous transactions when deleting attr blocks
Currently xfs_attr_inactive causes a synchronous transactions if we are
removing a file that has any extents allocated to the attribute fork, and
thus makes XFS extremely slow at removing files with out of line extended
attributes. The code looks a like a relict from the days before the busy
extent list, but with the busy extent list we avoid reusing data and attr
extents that have been freed but not commited yet, so this code is just
as superflous as the synchronous transactions for data blocks.
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
Reported-by: Bernd Schubert <bernd.schubert@xxxxxxxxxxxxxxxxxx>
Reviewed-by: Dave Chinner <dchinner@xxxxxxxxxx>
Signed-off-by: Alex Elder <aelder@xxxxxxx>
-----------------------------------------------------------------------
Summary of changes:
fs/xfs/xfs_aops.c | 27 +++++++++++++++++----------
fs/xfs/xfs_attr.c | 12 ------------
fs/xfs/xfs_bmap.c | 10 +---------
fs/xfs/xfs_file.c | 17 ++++++++++++++---
4 files changed, 32 insertions(+), 34 deletions(-)
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