btrfs: xattr: remove unnecessary call to btrfs_mark_buffer_dirty()

The call to btrfs_mark_buffer_dirty() at btrfs_setxattr() is not
necessary as we have a path setup for writing with btrfs_search_slot()
having a 'cow' argument set to 1.

This just makes the code more verbose, confusing and add a little extra
overhead and well as increase the module's text size, so remove it.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/fs/btrfs/xattr.c b/fs/btrfs/xattr.c
index bc18710d1dcfbbf015c6390959dcc47c1226019b..3e0edbcf73e106d47cc201b1a85de9d90f65a368 100644 (file)
--- a/fs/btrfs/xattr.c
+++ b/fs/btrfs/xattr.c
@@ -204,7 +204,6 @@ int btrfs_setxattr(struct btrfs_trans_handle *trans, struct inode *inode,
                btrfs_set_dir_data_len(leaf, di, size);
                data_ptr = ((unsigned long)(di + 1)) + name_len;
                write_extent_buffer(leaf, value, data_ptr, size);
-               btrfs_mark_buffer_dirty(trans, leaf);
        } else {
                /*
                 * Insert, and we had space for the xattr, so path->slots[0] is