btrfs: dev-replace: remove unnecessary call to btrfs_mark_buffer_dirty()

The call to btrfs_mark_buffer_dirty() at btrfs_run_dev_replace() 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/dev-replace.c b/fs/btrfs/dev-replace.c
index ac8e97ed13f7510d2b7f4449938e7aac3befc1c4..f86fbea0b3de682210d84260132e44734e90b5c8 100644 (file)
--- a/fs/btrfs/dev-replace.c
+++ b/fs/btrfs/dev-replace.c
@@ -440,9 +440,6 @@ int btrfs_run_dev_replace(struct btrfs_trans_handle *trans)
                dev_replace->cursor_right);
        dev_replace->item_needs_writeback = 0;
        up_write(&dev_replace->rwsem);
-
-       btrfs_mark_buffer_dirty(trans, eb);
-
 out:
        btrfs_free_path(path);