From: Yan <yanzheng@21cn.com>
Date: Tue, 6 Nov 2007 15:26:28 +0000 (-0500)
Subject: Fix EXTENT_MAP_INLINE off by one in btrfs_drop_extents
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=a273208edd55463b3bcd8b77a6fe8ba54afc6940;p=mv-sheeva.git

Fix EXTENT_MAP_INLINE off by one in btrfs_drop_extents

Don't set hint_byte to EXTENT_MAP_INLINE when 'end == extent_end' or
'start == key.offset' . The inline extent will be truncated in these
cases.

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

diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index bb98f52f4ea..5ceaed25dce 100644
--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -475,8 +475,7 @@ next_slot:
 			search_start = (extent_end + mask) & ~mask;
 		} else
 			search_start = extent_end;
-
-		if (end <= extent_end && start >= key.offset && found_inline) {
+		if (end < extent_end && start > key.offset && found_inline) {
 			*hint_byte = EXTENT_MAP_INLINE;
 		}
 		if (end < extent_end && end >= key.offset) {