xfs: refactor xfs_vm_writepage

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After the last patches the code for overwrites is the same as for
delayed and unwritten extents except that it doesn't need to call
xfs_map_at_offset.  Take care of that fact to simplify
xfs_vm_writepage.

The buffer loop now first checks the type of buffer and checks/sets
the ioend type, or continues to the next buffer if it's not
interesting to us.  Only after that we validate the iomap and
perform the block mapping if needed, all in common code for the
cases where we have to do work.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Alex Elder <aelder@sgi.com>

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Christoph Hellwig 2010-12-10 08:42:24 +00:00 • committed by Alex Elder

parent 2fa24f9253

commit aeea1b1f81

1 changed files with 39 additions and 58 deletions

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fs/xfs/linux-2.6/xfs_aops.c

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