Georgi Djakov ed2e69d22b UPSTREAM: mm/page_io: use pr_alert_ratelimited for swap read/write errors ...

If there are errors during swap read or write, they can easily fill the
log buffer and remove any previous messages that might be useful for
debugging, especially on systems that rely for logging only on the kernel
ring-buffer.

For example, on a systems using zram as swap, we are more likely to see
any page allocation errors preceding the swap write errors if the alerts
are ratelimited.

Link: https://lkml.kernel.org/r/20210201142055.29068-1-georgi.djakov@linaro.org
Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org>
Acked-by: Minchan Kim <minchan@kernel.org>
Reviewed-by: Miaohe Lin <linmiaohe@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Bug: 178886143
(cherry picked from commit 25eaab438dd58092c5f0c62118d933bf8b2fcc76)

Change-Id: Id9ec7098ee381128090a2aca181baed7f17b9843
Signed-off-by: Chris Goldsworthy <cgoldswo@codeaurora.org>

2021-03-30 18:44:11 +00:00

11 KiB

Raw Blame History

View Raw