提交 be2a2656 编写于 作者: N NeilBrown

md: unplug writes to external bitmaps.

When writing to an 'external' bitmap we don't currently unplug the
device before waiting, so we can get a 3msec delay each time;
So use REQ_UNPLUG to force and unplug.
Signed-off-by: NNeilBrown <neilb@suse.de>
上级 a167f663
......@@ -343,7 +343,7 @@ static void write_page(struct bitmap *bitmap, struct page *page, int wait)
atomic_inc(&bitmap->pending_writes);
set_buffer_locked(bh);
set_buffer_mapped(bh);
submit_bh(WRITE, bh);
submit_bh(WRITE | REQ_UNPLUG | REQ_SYNC, bh);
bh = bh->b_this_page;
}
......
Markdown is supported
0% .
You are about to add 0 people to the discussion. Proceed with caution.
先完成此消息的编辑!
想要评论请 注册