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| author | Bob Peterson <rpeterso@redhat.com> | 2012-09-12 15:40:31 +0200 |
|---|---|---|
| committer | Steven Whitehouse <swhiteho@redhat.com> | 2012-09-24 11:47:27 +0200 |
| commit | 3701530aed9711fcfe9b29d3de0f7a27c8dbc8ae (patch) | |
| tree | c6b5a2228e2f2b205b62ddf50cb38e781d2fd82e /fs/gfs2 | |
| parent | GFS2: Consolidate free block searching functions (diff) | |
| download | linux-3701530aed9711fcfe9b29d3de0f7a27c8dbc8ae.tar.xz linux-3701530aed9711fcfe9b29d3de0f7a27c8dbc8ae.zip | |
GFS2: Fix infinite loop in rbm_find
This patch fixes an infinite loop in gfs2_rbm_find that was introduced
by the previous patch. The problem occurred when the length was less
than 3 but the rbm block was byte-aligned, causing it to improperly
return a extent length of zero, which caused it to spin.
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Tested-by: Bob Peterson <rpeterso@redhat.com>
Tested-by: Barry Marson <bmarson@redhat.com>
Diffstat (limited to 'fs/gfs2')
| -rw-r--r-- | fs/gfs2/rgrp.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/fs/gfs2/rgrp.c b/fs/gfs2/rgrp.c index b933cdcda7f4..3cc402ce6fea 100644 --- a/fs/gfs2/rgrp.c +++ b/fs/gfs2/rgrp.c @@ -329,6 +329,7 @@ static u32 gfs2_free_extlen(const struct gfs2_rbm *rrbm, u32 len) gfs2_unaligned_extlen(&rbm, 4 - n_unaligned, &len)) goto out; + n_unaligned = len & 3; /* Start is now byte aligned */ while (len > 3) { start = rbm.bi->bi_bh->b_data; |