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| author | Hugh Dickins <hugh@veritas.com> | 2006-12-06 20:41:30 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.osdl.org> | 2006-12-07 08:39:48 -0800 |
| commit | 7d1c520bb57e4b5e94ec937c13553dccf473341b (patch) | |
| tree | 6e6ff8db13b6b8a3c122553bd5b1d43c7498ad77 /fs/ext3/balloc.c | |
| parent | 2823b5535efad71e950ef50c2ce5f9e4dbaedc17 (diff) | |
| download | linux-7d1c520bb57e4b5e94ec937c13553dccf473341b.tar.gz linux-7d1c520bb57e4b5e94ec937c13553dccf473341b.tar.bz2 linux-7d1c520bb57e4b5e94ec937c13553dccf473341b.zip | |
[PATCH] ext3 balloc: fix _with_rsv freeze
Port fix to the off-by-one in find_next_usable_block's memscan from ext2 to
ext3; but it didn't cause a serious problem for ext3 because the additional
ext3_test_allocatable check rescued it from the error.
Signed-off-by: Mingming Cao <cmm@us.ibm.com>
Signed-off-by: Hugh Dickins <hugh@veritas.com>
Cc: <linux-ext4@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'fs/ext3/balloc.c')
| -rw-r--r-- | fs/ext3/balloc.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/ext3/balloc.c b/fs/ext3/balloc.c index 5a2c198762f0..22161740ba29 100644 --- a/fs/ext3/balloc.c +++ b/fs/ext3/balloc.c @@ -730,7 +730,7 @@ find_next_usable_block(ext3_grpblk_t start, struct buffer_head *bh, here = 0; p = ((char *)bh->b_data) + (here >> 3); - r = memscan(p, 0, (maxblocks - here + 7) >> 3); + r = memscan(p, 0, ((maxblocks + 7) >> 3) - (here >> 3)); next = (r - ((char *)bh->b_data)) << 3; if (next < maxblocks && next >= start && ext3_test_allocatable(next, bh)) |