iomap: ignore non-shared or non-data blocks in xfs_file_dirty

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xfs_file_dirty is used to unshare reflink blocks.  Rename the function
to xfs_file_unshare to better document that purpose, and skip iomaps
that are not shared and don't need zeroing.  This will allow to simplify
the caller.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>

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Christoph Hellwig 2019-10-18 16:41:34 -07:00 • committed by Darrick J. Wong

parent dcd6158d15

commit 3590c4d897

3 changed files with 13 additions and 6 deletions

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15

fs/iomap/buffered-io.c

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2

fs/xfs/xfs_reflink.c

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2

include/linux/iomap.h

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