[PATCH 3/3] md: use current request time as base for ktime comparisons
From: Pankaj Gupta <pankaj.gupta.linux@gmail.com>
Date: 2020-11-11 05:17:34
Also in:
lkml
Subsystem:
software raid (multiple disks) support, the rest · Maintainers:
Song Liu, Yu Kuai, Linus Torvalds
From: Pankaj Gupta <redacted> 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 <redacted> --- 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