From: Pankaj Gupta <pankaj.gupta@xxxxxxxxxxxxxxx>
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: Pankaj Gupta <pankaj.gupta@xxxxxxxxxxxxxxx>
---
drivers/md/md.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/md/md.c b/drivers/md/md.c
index a330e61876e0..217b1e3312cb 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -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;
--
2.20.1
