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authorChristoph Hellwig <hch@infradead.org>2011-05-11 15:04:08 +0000
committerAlex Elder <aelder@sgi.com>2011-05-25 10:48:37 -0500
commit00239acf36d3bba8e7c0609e6c473d6e408a2135 (patch)
tree4bde73f37ebd42aeeb5cc8b5fa7f05364ef77659 /fs/xfs
parent5690f92199956c0f2a2d9f718b5031e1300a1de1 (diff)
xfs: do not use unchecked extent indices in xfs_bunmapi
Make sure to only call xfs_iext_get_ext after we've validate the extent index when moving on to the next index in xfs_bunmapi. Also remove the old workaround for too large indices that has been superceeded by the proper fix in xfs_bmap_del_extent. Based on an earlier patch from Lachlan McIlroy. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Lachlan McIlroy <lmcilroy@redhat.com> Signed-off-by: Alex Elder <aelder@sgi.com>
Diffstat (limited to 'fs/xfs')
-rw-r--r--fs/xfs/xfs_bmap.c16
1 files changed, 8 insertions, 8 deletions
diff --git a/fs/xfs/xfs_bmap.c b/fs/xfs/xfs_bmap.c
index af655c1d460d..ebcd45203c3d 100644
--- a/fs/xfs/xfs_bmap.c
+++ b/fs/xfs/xfs_bmap.c
@@ -5242,17 +5242,17 @@ xfs_bunmapi(
nodelete:
/*
* If not done go on to the next (previous) record.
- * Reset ep in case the extents array was re-alloced.
*/
- ep = xfs_iext_get_ext(ifp, lastx);
if (bno != (xfs_fileoff_t)-1 && bno >= start) {
- if (lastx >= XFS_IFORK_NEXTENTS(ip, whichfork) ||
- xfs_bmbt_get_startoff(ep) > bno) {
- if (--lastx >= 0)
- ep = xfs_iext_get_ext(ifp, lastx);
- }
- if (lastx >= 0)
+ if (lastx >= 0) {
+ ep = xfs_iext_get_ext(ifp, lastx);
+ if (xfs_bmbt_get_startoff(ep) > bno) {
+ if (--lastx >= 0)
+ ep = xfs_iext_get_ext(ifp,
+ lastx);
+ }
xfs_bmbt_get_all(ep, &got);
+ }
extno++;
}
}