Btrfs: check btrfs_get_extent return for IS_ERR()
btrfs_get_extent() never returns NULL, only a valid pointer or ERR_PTR()
Signed-off-by: Dan Carpenter <[email protected]>
Signed-off-by: Chris Mason <[email protected]>
diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index 74d8913..2b7dd88 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -510,7 +510,7 @@
em = btrfs_get_extent(inode, NULL, 0, start, len, 0);
unlock_extent(io_tree, start, start + len - 1, GFP_NOFS);
- if (!em)
+ if (IS_ERR(em))
return 0;
}
