[XFS] Barriers need to be dynamically checked and switched off

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If the underlying block device suddenly stops supporting barriers, we need
to handle the -EOPNOTSUPP error in a sane manner rather than shutting
down the filesystem. If we get this error, clear the barrier flag, reissue
the I/O, and tell the world bad things are occurring.

SGI-PV: 964544
SGI-Modid: xfs-linux-melb:xfs-kern:28568a

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 18:24:23 +10:00 • committed by Tim Shimmin

parent c1561cf463

commit 0bfefc46dc

3 changed files with 25 additions and 9 deletions

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13

fs/xfs/linux-2.6/xfs_buf.c

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8

fs/xfs/linux-2.6/xfs_super.c

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13

fs/xfs/xfs_log.c

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