[XFS] Sleeping with the ilock waiting for I/O completion is Bad.

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Recent fixes to the filesystem freezing code introduced a vn_iowait call
in the middle of the sync code. Unfortunately, at the point where this
call was added we are holding the ilock. The ilock is needed by I/O
completion for unwritten extent conversion and now updating the file size.
Hence I/o cannot complete if we hold the ilock while waiting for I/O
completion.

Fix up the bug and clean the code up around it.

SGI-PV: 963674
SGI-Modid: xfs-linux-melb:xfs-kern:28566a

Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Tim Shimmin <tes@sgi.com>

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David Chinner 2007-05-14 18:24:09 +10:00 • committed by Tim Shimmin

parent 4cc929ee30

commit 40095b64f5

1 changed files with 28 additions and 45 deletions

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fs/xfs/xfs_vfsops.c

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