f2fs: shrink blk plug region

Don't use blk plug covering area where there won't be any IOs being issued.

Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
This commit is contained in:
Chao Yu 2017-03-27 18:14:05 +08:00 • committed by Jaegeuk Kim
commit a54455f5ee