------------------------------------------------------
Subject: ext2 balloc: fix off-by-one against grp_goal
From: Hugh Dickins <[EMAIL PROTECTED]>
grp_goal 0 is a genuine goal (unlike -1), so ext2_try_to_allocate_with_rsv
should treat it as such.
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Sync up with ext2 reservation fix in ext3
Signed-off-by: Mingming Cao <[EMAIL PROTECTED]>
---
---
linux-2.6.19-rc5-cmm/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
---
linux-2.6.19-rc5/fs/ext3/balloc.c~ext3-balloc-fix-off-by-one-against-grp_goal
2006-11-28 19:36:48.000000000 -0800
+++ linux-2.6.19-rc5-cmm/fs/ext3/balloc.c 2006-11-28 19:36:48.000000000
-0800
@@ -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;
_
-
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