[XFS] Fix sub-block zeroing for buffered writes into unwritten extents.

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When writing less than a filesystem block of data into an unwritten extent
via buffered I/O, __xfs_get_blocks fails to set the buffer new flag. As a
result, the generic code will not zero either edge of the block resulting
in garbage being written to disk either side of the real data. Set the
buffer new state on bufferd writes to unwritten extents to ensure that
zeroing occurs.

SGI-PV: 960328
SGI-Modid: xfs-linux-melb:xfs-kern:28000a

Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Tim Shimmin <tes@sgi.com>

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David Chinner 2007-02-10 18:36:35 +11:00 • committed by Tim Shimmin

parent 5478eead85

commit 549054afad

1 changed files with 9 additions and 4 deletions

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fs/xfs/linux-2.6/xfs_aops.c

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