xfs: ensure that single-owner file blocks are not owned by others
For any file fork mapping that can only have a single owner, make sure
that there are no other rmap owners for that mapping. This patch
requires the more detailed checking provided by xfs_rmap_count_owners so
that we can know how many rmap records for a given range of space had a
matching owner, how many had a non-matching owner, and how many
conflicted with the records that have a matching owner.
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
1 file changed
