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| author | Christoph Hellwig <hch@infradead.org> | 2011-05-11 15:04:08 +0000 |
|---|---|---|
| committer | Alex Elder <aelder@sgi.com> | 2011-05-25 10:48:37 -0500 |
| commit | 00239acf36d3bba8e7c0609e6c473d6e408a2135 (patch) | |
| tree | 4bde73f37ebd42aeeb5cc8b5fa7f05364ef77659 /fs/xfs | |
| parent | 5690f92199956c0f2a2d9f718b5031e1300a1de1 (diff) | |
| download | linux-00239acf36d3bba8e7c0609e6c473d6e408a2135.tar.gz linux-00239acf36d3bba8e7c0609e6c473d6e408a2135.tar.bz2 linux-00239acf36d3bba8e7c0609e6c473d6e408a2135.zip | |
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.c | 16 |
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++; } } |