The patch titled
Subject: mm/page_reporting.c: drop stale list head check in page_reporting_cycle
has been added to the -mm tree. Its filename is
mm-page_reporting-drop-stale-list-head-check-in-page_reporting_cycle.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-page_reporting-drop-stale-list-head-check-in-page_reporting_cycle.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-page_reporting-drop-stale-list-head-check-in-page_reporting_cycle.patch
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: Wei Yang <richard.weiyang@xxxxxxxxxxxxxxxxx>
Subject: mm/page_reporting.c: drop stale list head check in page_reporting_cycle
list_for_each_entry_safe() guarantees that we will never stumble over the
list head; "&page->lru != list" will always evaluate to true. Let's
simplify.
[david@xxxxxxxxxx: Changelog refinements]
Link: http://lkml.kernel.org/r/20200818084448.33969-1-richard.weiyang@xxxxxxxxxxxxxxxxx
Signed-off-by: Wei Yang <richard.weiyang@xxxxxxxxxxxxxxxxx>
Reviewed-by: David Hildenbrand <david@xxxxxxxxxx>
Reviewed-by: Alexander Duyck <alexander.h.duyck@xxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/page_reporting.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/mm/page_reporting.c~mm-page_reporting-drop-stale-list-head-check-in-page_reporting_cycle
+++ a/mm/page_reporting.c
@@ -178,7 +178,7 @@ page_reporting_cycle(struct page_reporti
* the new head of the free list before we release the
* zone lock.
*/
- if (&page->lru != list && !list_is_first(&page->lru, list))
+ if (!list_is_first(&page->lru, list))
list_rotate_to_front(&page->lru, list);
/* release lock before waiting on report processing */
_
Patches currently in -mm which might be from richard.weiyang@xxxxxxxxxxxxxxxxx are
mm-page_reporting-drop-stale-list-head-check-in-page_reporting_cycle.patch
