From b2f2c76d17b68869914a1ec3ab04c7674668f60d Mon Sep 17 00:00:00 2001 From: Hugh Dickins Date: Wed, 6 Dec 2006 20:39:20 -0800 Subject: [PATCH] [PATCH] ext4 balloc: fix off-by-one against rsv_end 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 Signed-off-by: Hugh Dickins Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/ext4/balloc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/ext4/balloc.c b/fs/ext4/balloc.c index 2bcca5261ee..c5589b3f58e 100644 --- a/fs/ext4/balloc.c +++ b/fs/ext4/balloc.c @@ -1165,7 +1165,7 @@ 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 -- 2.41.1