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authorHugh Dickins <hugh@veritas.com>2006-12-06 20:39:19 -0800
committerLinus Torvalds <torvalds@woody.osdl.org>2006-12-07 08:39:42 -0800
commite7dc95db2695dc92b223cdc49227ac57e63406d2 (patch)
treea988c2c6b0c8b3c0bf357ed711b57c0ba1045aa1
parentcd16c8f72aaaf2af06969d1441051b90010f7041 (diff)
downloadop-kernel-dev-e7dc95db2695dc92b223cdc49227ac57e63406d2.zip
op-kernel-dev-e7dc95db2695dc92b223cdc49227ac57e63406d2.tar.gz
[PATCH] ext4 balloc: fix off-by-one against grp_goal
grp_goal 0 is a genuine goal (unlike -1), so ext4_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> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
-rw-r--r--fs/ext4/balloc.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/ext4/balloc.c b/fs/ext4/balloc.c
index af3acf3..2bcca52 100644
--- a/fs/ext4/balloc.c
+++ b/fs/ext4/balloc.c
@@ -1288,7 +1288,7 @@ ext4_try_to_allocate_with_rsv(struct super_block *sb, handle_t *handle,
}
/*
* grp_goal is a group relative block number (if there is a goal)
- * 0 < grp_goal < EXT4_BLOCKS_PER_GROUP(sb)
+ * 0 <= grp_goal < EXT4_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
*/
@@ -1324,7 +1324,7 @@ ext4_try_to_allocate_with_rsv(struct super_block *sb, handle_t *handle,
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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