[XFS] Catch errors returned from xfs_bmap_last_offset().
xfs_bmap_last_offset() can fail and return an error.
xfs_iomap_write_allocate() fails to detect and propagate the error.
SGI-PV: 980084
SGI-Modid: xfs-linux-melb:xfs-kern:30802a
Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Niv Sardi <xaiki@sgi.com>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
diff --git a/fs/xfs/xfs_iomap.c b/fs/xfs/xfs_iomap.c
index fde37f8..fb3cf11 100644
--- a/fs/xfs/xfs_iomap.c
+++ b/fs/xfs/xfs_iomap.c
@@ -802,8 +802,11 @@
*/
nimaps = 1;
end_fsb = XFS_B_TO_FSB(mp, ip->i_size);
- xfs_bmap_last_offset(NULL, ip, &last_block,
- XFS_DATA_FORK);
+ error = xfs_bmap_last_offset(NULL, ip, &last_block,
+ XFS_DATA_FORK);
+ if (error)
+ goto trans_cancel;
+
last_block = XFS_FILEOFF_MAX(last_block, end_fsb);
if ((map_start_fsb + count_fsb) > last_block) {
count_fsb = last_block - map_start_fsb;