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| author | David Chinner <dgc@sgi.com> | 2007-06-05 16:24:15 +1000 |
|---|---|---|
| committer | Tim Shimmin <tes@chook.melbourne.sgi.com> | 2007-07-14 15:29:37 +1000 |
| commit | 4e5ae8386b55677bde05bbd38b8fc82c67ad4564 (patch) | |
| tree | eb28b9003453d55c21b81da63ce1fb4a897023ed /fs/xfs | |
| parent | 210c6f1caa451623e14a7cd71000d2c2e0d9cc43 (diff) | |
| download | linux-3.10-4e5ae8386b55677bde05bbd38b8fc82c67ad4564.tar.gz linux-3.10-4e5ae8386b55677bde05bbd38b8fc82c67ad4564.tar.bz2 linux-3.10-4e5ae8386b55677bde05bbd38b8fc82c67ad4564.zip | |
[XFS] xfs_bmapi fails to update the previous extent pointer
When processing multiple extent maps, xfs_bmapi needs to keep track of the
extent behind the one it is currently working on to be able to trim extent
ranges correctly. Failing to update the previous pointer can result in
corrupted extent lists in memory and this will result in panics or assert
failures.
Update the previous pointer correctly when we move to the next extent to
process.
SGI-PV: 965631
SGI-Modid: xfs-linux-melb:xfs-kern:28773a
Signed-off-by: David Chinner <dgc@sgi.com>
Signed-off-by: Vlad Apostolov <vapo@sgi.com>
Signed-off-by: Tim Shimmin <tes@sgi.com>
Diffstat (limited to 'fs/xfs')
| -rw-r--r-- | fs/xfs/xfs_bmap.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/fs/xfs/xfs_bmap.c b/fs/xfs/xfs_bmap.c index b1ea26e40aa..9a654faf0c0 100644 --- a/fs/xfs/xfs_bmap.c +++ b/fs/xfs/xfs_bmap.c @@ -5219,10 +5219,10 @@ xfs_bmapi( * Else go on to the next record. */ ep = xfs_iext_get_ext(ifp, ++lastx); - if (lastx >= nextents) { + prev = got; + if (lastx >= nextents) eof = 1; - prev = got; - } else + else xfs_bmbt_get_all(ep, &got); } ifp->if_lastex = lastx; |