From: akpm@osdl.org
To: torvalds@osdl.org
Cc: akpm@osdl.org, hugh@veritas.com, cmm@us.ibm.com,
linux-ext4@vger.kernel.org
Subject: [patch 345/354] ext3 balloc: fix off-by-one against grp_goal
Date: Wed, 06 Dec 2006 20:41:25 -0800 [thread overview]
Message-ID: <200612070441.kB74fPhP030356@shell0.pdx.osdl.net> (raw)
From: Hugh Dickins <hugh@veritas.com>
grp_goal 0 is a genuine goal (unlike -1), so ext3_try_to_allocate_with_rsv
should treat it as such.
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>
---
fs/ext3/balloc.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff -puN fs/ext3/balloc.c~ext3-balloc-fix-off-by-one-against-grp_goal fs/ext3/balloc.c
--- a/fs/ext3/balloc.c~ext3-balloc-fix-off-by-one-against-grp_goal
+++ a/fs/ext3/balloc.c
@@ -1271,7 +1271,7 @@ ext3_try_to_allocate_with_rsv(struct sup
}
/*
* grp_goal is a group relative block number (if there is a goal)
- * 0 < grp_goal < EXT3_BLOCKS_PER_GROUP(sb)
+ * 0 <= grp_goal < EXT3_BLOCKS_PER_GROUP(sb)
* first block is a filesystem wide block number
* first block is the block number of the first block in this group
*/
@@ -1307,7 +1307,7 @@ ext3_try_to_allocate_with_rsv(struct sup
if (!goal_in_my_reservation(&my_rsv->rsv_window,
grp_goal, group, sb))
grp_goal = -1;
- } else if (grp_goal > 0) {
+ } else if (grp_goal >= 0) {
int curr = my_rsv->rsv_end -
(grp_goal + group_first_block) + 1;
_
reply other threads:[~2006-12-07 4:41 UTC|newest]
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