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David Chinner authored
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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