Commit 58f6f034 authored Oct 15, 2020 by Wei Yang Committed by Linus Torvalds Oct 16, 2020

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@redhat.com: Changelog refinements]

Signed-off-by: Wei Yang <richard.weiyang@linux.alibaba.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Alexander Duyck <alexander.h.duyck@linux.intel.com>
Link: http://lkml.kernel.org/r/20200818084448.33969-1-richard.weiyang@linux.alibaba.com


Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent c7df08f1

mm/page_reporting.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -178,7 +178,7 @@ page_reporting_cycle(struct page_reporting_dev_info prdev, struct zone zone,
		* 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 */

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