[XFS] A bug was found in xfs_bmap_add_extent_unwritten_real(). In a

particular case, the delta param which is supposed to describe the region
where extents have changed was not updated appropriately.

SGI-PV: 984030

SGI-Modid: xfs-linux-melb:xfs-kern:31663a

Signed-off-by: Tim Shimmin <tes@sgi.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Olaf Weber <olaf@sgi.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/fs/xfs/xfs_bmap.c b/fs/xfs/xfs_bmap.c
index cf4dee01983a..3c4beb3a4326 100644
--- a/fs/xfs/xfs_bmap.c
+++ b/fs/xfs/xfs_bmap.c
@@ -1740,9 +1740,9 @@ xfs_bmap_add_extent_unwritten_real(
                                 r[1].br_state)))
                                 goto done;
                         /* new left extent - oldext */
-                        PREV.br_blockcount =
-                                new->br_startoff - PREV.br_startoff;
                         cur->bc_rec.b = PREV;
+                        cur->bc_rec.b.br_blockcount =
+                                new->br_startoff - PREV.br_startoff;
                         if ((error = xfs_bmbt_insert(cur, &i)))
                                 goto done;
                         XFS_WANT_CORRUPTED_GOTO(i == 1, done);