f2fs: don't issue discard commands in online discard is on

Actually, we don't need to issue discard commands, if discard is on, as
mentioned in the comment.

Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Jaegeuk Kim 2018-06-20 21:27:21 -07:00
commit 5a6154920f