The patch titled
Subject: mm: ksm: remove unnecessary try_to_freeze()
has been added to the -mm mm-unstable branch. Its filename is
mm-ksm-remove-unnecessary-try_to_freeze.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-ksm-remove-unnecessary-try_to_freeze.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Kevin Hao <haokexin@xxxxxxxxx>
Subject: mm: ksm: remove unnecessary try_to_freeze()
Date: Wed, 13 Dec 2023 17:09:06 +0800
A freezable kernel thread can enter frozen state during freezing by
either calling try_to_freeze() or using wait_event_freezable() and its
variants. However, there is no need to use both methods simultaneously.
Link: https://lkml.kernel.org/r/20231213090906.1070985-1-haokexin@xxxxxxxxx
Signed-off-by: Kevin Hao <haokexin@xxxxxxxxx>
Acked-by: David Hildenbrand <david@xxxxxxxxxx>
Cc: Andrea Arcangeli <aarcange@xxxxxxxxxx>
Cc: "Rafael J. Wysocki" <rafael@xxxxxxxxxx>
Cc: Pavel Machek <pavel@xxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/ksm.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
--- a/mm/ksm.c~mm-ksm-remove-unnecessary-try_to_freeze
+++ a/mm/ksm.c
@@ -2604,11 +2604,9 @@ static int ksm_scan_thread(void *nothing
ksm_do_scan(ksm_thread_pages_to_scan);
mutex_unlock(&ksm_thread_mutex);
- try_to_freeze();
-
if (ksmd_should_run()) {
sleep_ms = READ_ONCE(ksm_thread_sleep_millisecs);
- wait_event_interruptible_timeout(ksm_iter_wait,
+ wait_event_freezable_timeout(ksm_iter_wait,
sleep_ms != READ_ONCE(ksm_thread_sleep_millisecs),
msecs_to_jiffies(sleep_ms));
} else {
_
Patches currently in -mm which might be from haokexin@xxxxxxxxx are
mm-ksm-remove-unnecessary-try_to_freeze.patch
fork-remove-redundant-task_uninterruptible.patch
