xfs: only reserve quota blocks if we're mapping into a hole

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When logging quota block count updates during a reflink operation, we
only log the /delta/ of the block count changes to the dquot.  Since we
now know ahead of time the extent type of both dmap and smap (and that
they have the same length), we know that we only need to reserve quota
blocks for dmap's blockcount if we're mapping it into a hole.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>

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Darrick J. Wong 2020-06-29 14:47:19 -07:00

parent aa5d0ba0b5

commit 94b941fd7a

1 changed files with 4 additions and 2 deletions

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fs/xfs/xfs_reflink.c

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