mm/page_reporting: use list_entry_is_head() in page_reporting_cycle()

Replace '&next->lru != list' with list_entry_is_head().  No functional
change.

Link: https://lkml.kernel.org/r/20201222182735.GA1257912@ubuntu-A520I-AC
Signed-off-by: sh <sh_def@163.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Alexander Duyck <alexander.h.duyck@linux.intel.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/mm/page_reporting.c b/mm/page_reporting.c
index cd8e13d41df43c8e9617cebbe9ca3357b5a27320..c50d93ffa2526924deea2433a9405a1f5f785ac1 100644 (file)
--- a/mm/page_reporting.c
+++ b/mm/page_reporting.c
@@ -211,7 +211,7 @@ page_reporting_cycle(struct page_reporting_dev_info *prdev, struct zone *zone,
        }
 
        /* Rotate any leftover pages to the head of the freelist */
-       if (&next->lru != list && !list_is_first(&next->lru, list))
+       if (!list_entry_is_head(next, list, lru) && !list_is_first(&next->lru, list))
                list_rotate_to_front(&next->lru, list);
 
        spin_unlock_irq(&zone->lock);