Could I get the comments for the patch? thanks
在 2021/7/17 下午11:54, Xianting Tian 写道:
From: Xianting Tian <xianting.tian@xxxxxxxxxxxxxxxxx>
Ther is no unplugging timer now, on-stack io plugging is used:
struct blk_plug plug;
blk_start_plug(&plug);
submit_batch_of_io();
blk_finish_plug(&plug);
So remove the old comments for unplugging timer.
Signed-off-by: Xianting Tian <xianting.tian@xxxxxxxxxxxxxxxxx>
---
drivers/md/dm-io.c | 5 -----
1 file changed, 5 deletions(-)
diff --git a/drivers/md/dm-io.c b/drivers/md/dm-io.c
index 2d3cda0..7dba193 100644
--- a/drivers/md/dm-io.c
+++ b/drivers/md/dm-io.c
@@ -528,11 +528,6 @@ static int dp_init(struct dm_io_request *io_req, struct dpages *dp,
/*
* New collapsed (a)synchronous interface.
- *
- * If the IO is asynchronous (i.e. it has notify.fn), you must either unplug
- * the queue with blk_unplug() some time later or set REQ_SYNC in
- * io_req->bi_opf. If you fail to do one of these, the IO will be submitted to
- * the disk after q->unplug_delay, which defaults to 3ms in blk-settings.c.
*/
int dm_io(struct dm_io_request *io_req, unsigned num_regions,
struct dm_io_region *where, unsigned long *sync_error_bits)
--
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