Commit f4f905e8 authored Mar 23, 2018 by Vinayak Menon Committed by Swathi Sridhar Oct 16, 2018

mm: ratelimit swap write errors



Ratelimit the swap write errors to avoid logbuf getting
filled up by these messages. These pages remove the useful
page allocation failure messages (when zram is used as swap)
from logbuf, thus making the debugging difficult.

Change-Id: I9d4229a76b2551d7baca603112d53012d8722415
Signed-off-by: Vinayak Menon <vinmenon@codeaurora.org>
Signed-off-by: Charan Teja Reddy <charante@codeaurora.org>

parent 766b2618

mm/page_io.c

+3 −2

Original line number	Diff line number	Diff line
		@@ -63,8 +63,9 @@ void end_swap_bio_write(struct bio *bio)
		* Also clear PG_reclaim to avoid rotate_reclaimable_page()
		*/
		set_page_dirty(page);
		pr_alert("Write-error on swap-device (%u:%u:%llu)\n",
		MAJOR(bio_dev(bio)), MINOR(bio_dev(bio)),
		pr_alert_ratelimited("Write-error on swap-device (%u:%u:%llu)\n",
		MAJOR(bio_dev(bio)),
		MINOR(bio_dev(bio)),
		(unsigned long long)bio->bi_iter.bi_sector);
		ClearPageReclaim(page);
		}