Commit a23f2aae authored by Pankaj Gupta's avatar Pankaj Gupta Committed by Song Liu
Browse files

md: use current request time as base for ktime comparisons 



Request coalescing logic uses 'prev_flush_start' as base to
compare the current request start time. 'prev_flush_start' is
updated in other context.

This patch changes this by using ktime comparison base to
'req_start' for better readability of code.

Signed-off-by: default avatarPankaj Gupta <pankaj.gupta@cloud.ionos.com>
Signed-off-by: default avatarSong Liu <songliubraving@fb.com>
parent 204d1a64

drivers/md/md.c

+2 −2
Original line number Diff line number Diff line
@@ -667,10 +667,10 @@ bool md_flush_request(struct mddev *mddev, struct bio *bio) 
	 */

	wait_event_lock_irq(mddev->sb_wait,

			    !mddev->flush_bio ||

			    ktime_after(mddev->prev_flush_start, req_start),

			    ktime_before(req_start, mddev->prev_flush_start),

			    mddev->lock);

	/* new request after previous flush is completed */

	if (!ktime_after(mddev->prev_flush_start, req_start)) {

	if (ktime_after(req_start, mddev->prev_flush_start)) {

		WARN_ON(mddev->flush_bio);

		mddev->flush_bio = bio;

		bio = NULL;