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| author | Christoph Hellwig <hch@infradead.org> | 2011-05-11 15:04:09 +0000 |
|---|---|---|
| committer | Alex Elder <aelder@sgi.com> | 2011-05-25 10:48:37 -0500 |
| commit | f1c63b73cf60dc4800cde5ce7fd9466c419e5e36 (patch) | |
| tree | df9250617bbf4e7521c9b25a2d7b3a0ffb09c969 /fs/xfs/xfs_bmap.c | |
| parent | 00239acf36d3bba8e7c0609e6c473d6e408a2135 (diff) | |
| download | lwn-f1c63b73cf60dc4800cde5ce7fd9466c419e5e36.tar.gz lwn-f1c63b73cf60dc4800cde5ce7fd9466c419e5e36.zip | |
xfs: do not do pointer arithmetic on extent records
We need to call xfs_iext_get_ext for the previous extent to get a
valid pointer, and can't just do pointer arithmetics as they might
be in different pages.
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/xfs_bmap.c')
| -rw-r--r-- | fs/xfs/xfs_bmap.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/fs/xfs/xfs_bmap.c b/fs/xfs/xfs_bmap.c index ebcd45203c3d..896e16f08ed9 100644 --- a/fs/xfs/xfs_bmap.c +++ b/fs/xfs/xfs_bmap.c @@ -5143,9 +5143,12 @@ xfs_bunmapi( */ ASSERT(bno >= del.br_blockcount); bno -= del.br_blockcount; - if (bno < got.br_startoff) { - if (--lastx >= 0) - xfs_bmbt_get_all(--ep, &got); + if (got.br_startoff > bno) { + if (--lastx >= 0) { + ep = xfs_iext_get_ext(ifp, + lastx); + xfs_bmbt_get_all(ep, &got); + } } continue; } else if (del.br_state == XFS_EXT_UNWRITTEN) { |