From: Hugh Dickins <[email protected]>
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 <[email protected]>
Signed-off-by: Hugh Dickins <[email protected]>
Cc: <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
---
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;
_