Commit 58f6f034 authored by Wei Yang's avatar Wei Yang Committed by Linus Torvalds

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: default avatarWei Yang <richard.weiyang@linux.alibaba.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Reviewed-by: default avatarDavid Hildenbrand <david@redhat.com>
Reviewed-by: default avatarAlexander Duyck <alexander.h.duyck@linux.intel.com>
Link: http://lkml.kernel.org/r/20200818084448.33969-1-richard.weiyang@linux.alibaba.comSigned-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent c7df08f1
...@@ -178,7 +178,7 @@ page_reporting_cycle(struct page_reporting_dev_info *prdev, struct zone *zone, ...@@ -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 * the new head of the free list before we release the
* zone lock. * 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); list_rotate_to_front(&page->lru, list);
/* release lock before waiting on report processing */ /* release lock before waiting on report processing */
......
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