f2fs: assign return value in f2fs_gc

This patch adds a return value of write_checkpoint for f2fs_gc.

Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Jaegeuk Kim 2016-09-21 09:28:06 -07:00
commit 2956e450fa