David Chinner effd120edb [XFS] Map unwritten extents correctly for I/o completion processing
If we have multiple unwritten extents within a single page, we fail to
tell the I/o completion construction handlers we need a new handle for the
second and subsequent blocks in the page. While we still issue the I/O
correctly, we do not have the correct ranges recorded in the ioend
structures and hence when we go to convert the unwritten extents we screw
it up.

Make sure we start a new ioend every time the mapping changes so that we
convert the correct ranges on I/O completion.

SGI-PV: 964647
SGI-Modid: xfs-linux-melb:xfs-kern:28797a

Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Tim Shimmin <tes@sgi.com>
2007-07-14 15:32:49 +10:00
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