Btrfs: [PATCH] extent_map: make the writepage_io hook optional

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The writepage_io is not mandatory, e.g. my port of xfs to the extent_map
code does not have one for now.  So handle a NULL pointer gracefully
here.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Chris Mason <chris.mason@oracle.com>

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Christoph Hellwig 2007-09-10 20:02:32 -04:00 • committed by David Woodhouse

parent d396c6f554

commit b06355f0fe

1 changed files with 6 additions and 1 deletions

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fs/btrfs/extent_map.c

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