提交 16502423 编写于 作者: H Hugh Dickins 提交者: Linus Torvalds

[PATCH] ext3 balloc: fix off-by-one against grp_goal

grp_goal 0 is a genuine goal (unlike -1), so ext3_try_to_allocate_with_rsv
should treat it as such.
Signed-off-by: NMingming Cao <cmm@us.ibm.com>
Signed-off-by: NHugh Dickins <hugh@veritas.com>
Cc: <linux-ext4@vger.kernel.org>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
上级 ef503678
......@@ -1271,7 +1271,7 @@ ext3_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 < 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 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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