[PATCH] ext3 balloc: fix off-by-one against rsv_end
authorHugh Dickins <hugh@veritas.com>
Thu, 7 Dec 2006 04:41:25 +0000 (20:41 -0800)
committerLinus Torvalds <torvalds@woody.osdl.org>
Thu, 7 Dec 2006 16:39:48 +0000 (08:39 -0800)
rsv_end is the last block within the reservation, so alloc_new_reservation
should accept start_block == rsv_end as success.

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>
fs/ext3/balloc.c

index 0706a45d3c07e8b718b3ea9e7c4450a91b58b20e..57cf47a9420ee75cd2d50f96a0ac79e2b7a280ef 100644 (file)
@@ -1148,7 +1148,7 @@ retry:
         * check if the first free block is within the
         * free space we just reserved
         */
-       if (start_block >= my_rsv->rsv_start && start_block < my_rsv->rsv_end)
+       if (start_block >= my_rsv->rsv_start && start_block <= my_rsv->rsv_end)
                return 0;               /* success */
        /*
         * if the first free bit we found is out of the reservable space