diff --git a/[refs] b/[refs]
index be4baff8fab2..8e99dc57d9a4 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 797f4277113bff142b6c64a55abaef64d7d67d5c
+refs/heads/master: 0ff6fabdb0a862b22df4dd75873578392478e64d
diff --git a/trunk/fs/btrfs/file.c b/trunk/fs/btrfs/file.c
index a43d0aef6ee1..8e3d6788d6dd 100644
--- a/trunk/fs/btrfs/file.c
+++ b/trunk/fs/btrfs/file.c
@@ -2072,7 +2072,7 @@ static long btrfs_fallocate(struct file *file, int mode,
 	 * Make sure we have enough space before we do the
 	 * allocation.
 	 */
-	ret = btrfs_check_data_free_space(inode, alloc_end - alloc_start + 1);
+	ret = btrfs_check_data_free_space(inode, alloc_end - alloc_start);
 	if (ret)
 		return ret;
 
@@ -2179,7 +2179,7 @@ static long btrfs_fallocate(struct file *file, int mode,
 out:
 	mutex_unlock(&inode->i_mutex);
 	/* Let go of our reservation. */
-	btrfs_free_reserved_data_space(inode, alloc_end - alloc_start + 1);
+	btrfs_free_reserved_data_space(inode, alloc_end - alloc_start);
 	return ret;
 }