From: Yan <yanzheng@21cn.com>
Date: Fri, 14 Sep 2007 14:23:29 +0000 (-0400)
Subject: Btrfs: Fix off by one error in dirty_and_release_pages
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=6af858b24c0c4e91ce0b40b5dd5fdfc1fe2dda70;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

Btrfs: Fix off by one error in dirty_and_release_pages

Signed-off-by: Chris Mason <chris.mason@oracle.com>
---

diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index ca7e5d4474e0..26826a543355 100644
--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -236,7 +236,7 @@ static int dirty_and_release_pages(struct btrfs_trans_handle *trans,
 					   end_pos - start_pos, p, 0);
 		BUG_ON(err);
 		em->start = start_pos;
-		em->end = end_pos;
+		em->end = end_pos - 1;
 		em->block_start = EXTENT_MAP_INLINE;
 		em->block_end = EXTENT_MAP_INLINE;
 		add_extent_mapping(em_tree, em);