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xfs: cleanup xfs_reflink_find_cow_mapping

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Use xfs_iext_lookup_extent to look up the extent, drop a useless check,
drop a unneeded return value and clean up the general style a little bit.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
This commit is contained in:
Christoph Hellwig 2016-11-24 11:39:49 +11:00 • committed by Dave Chinner
parent 2755fc4438
commit 092d5d9d58
3 changed files with 19 additions and 32 deletions
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fs/xfs/xfs_reflink.h
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@ -31,7 +31,7 @@ extern int xfs_reflink_reserve_cow(struct xfs_inode *ip,
extern int xfs_reflink_allocate_cow_range(struct xfs_inode *ip,
xfs_off_t offset, xfs_off_t count);
extern bool xfs_reflink_find_cow_mapping(struct xfs_inode *ip, xfs_off_t offset,
struct xfs_bmbt_irec *imap, bool *need_alloc);
struct xfs_bmbt_irec *imap);
extern int xfs_reflink_trim_irec_to_next_cow(struct xfs_inode *ip,
xfs_fileoff_t offset_fsb, struct xfs_bmbt_irec *imap);