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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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