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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>
This commit is contained in:
Wei Yang 2020-10-15 20:09:49 -07:00 committed by Linus Torvalds
parent c7df08f195
commit 58f6f03497
1 changed files with 1 additions and 1 deletions
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mm/page_reporting.c
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@ -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 */