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authorDarrick J. Wong <darrick.wong@oracle.com>2016-08-03 04:33:43 +0300
committerDave Chinner <david@fromorbit.com>2016-08-03 04:33:43 +0300
commit673930c34a4500c616cf9b2bbe1ae131ead2e155 (patch)
tree954b737dbb42276aeb669f8eabca8bf71a592276 /fs/xfs/libxfs/xfs_rmap.h
parent340785cca16246f82ccaf11740d885017a9e9341 (diff)
downloadlinux-673930c34a4500c616cf9b2bbe1ae131ead2e155.tar.xz
xfs: introduce rmap extent operation stubs
Originally-From: Dave Chinner <dchinner@redhat.com> Add the stubs into the extent allocation and freeing paths that the rmap btree implementation will hook into. While doing this, add the trace points that will be used to track rmap btree extent manipulations. [darrick.wong@oracle.com: Extend the stubs to take full owner info.] Signed-off-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Dave Chinner <david@fromorbit.com>
Diffstat (limited to 'fs/xfs/libxfs/xfs_rmap.h')
-rw-r--r--fs/xfs/libxfs/xfs_rmap.h11
1 files changed, 11 insertions, 0 deletions
diff --git a/fs/xfs/libxfs/xfs_rmap.h b/fs/xfs/libxfs/xfs_rmap.h
index b30e7ad6c7cc..dbf0301e9ae1 100644
--- a/fs/xfs/libxfs/xfs_rmap.h
+++ b/fs/xfs/libxfs/xfs_rmap.h
@@ -64,4 +64,15 @@ xfs_rmap_skip_owner_update(
oi->oi_owner = XFS_RMAP_OWN_UNKNOWN;
}
+/* Reverse mapping functions. */
+
+struct xfs_buf;
+
+int xfs_rmap_alloc(struct xfs_trans *tp, struct xfs_buf *agbp,
+ xfs_agnumber_t agno, xfs_agblock_t bno, xfs_extlen_t len,
+ struct xfs_owner_info *oinfo);
+int xfs_rmap_free(struct xfs_trans *tp, struct xfs_buf *agbp,
+ xfs_agnumber_t agno, xfs_agblock_t bno, xfs_extlen_t len,
+ struct xfs_owner_info *oinfo);
+
#endif /* __XFS_RMAP_H__ */