btrfs: return value from btrfs_mark_extent_written() in case of error

commit e7b2ec3d3d4ebeb4cff7ae45cf430182fa6a49fb upstream.

We always return 0 even in case of an error in btrfs_mark_extent_written().
Fix it to return proper error value in case of a failure. All callers
handle it.

CC: stable@vger.kernel.org # 4.4+
Signed-off-by: Ritesh Harjani <riteshh@linux.ibm.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index a202f2f..41ad37f 100644 (file)
--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -1154,7 +1154,7 @@ int btrfs_mark_extent_written(struct btrfs_trans_handle *trans,
        int del_nr = 0;
        int del_slot = 0;
        int recow;
-       int ret;
+       int ret = 0;
        u64 ino = btrfs_ino(inode);
 
        path = btrfs_alloc_path();
@@ -1374,7 +1374,7 @@ again:
        }
 out:
        btrfs_free_path(path);
-       return 0;
+       return ret;
 }
 
 /*