[PATCH] mm: complement page reclaim comment

[Wanpeng Li]

From: Wanpeng Li <liwp@xxxxxxxxxxxxxxxxxx>

Signed-off-by: Wanpeng Li <liwp.linux@xxxxxxxxx>
---
 mm/vmscan.c |    1 +
 1 file changed, 1 insertion(+)

diff --git a/mm/vmscan.c b/mm/vmscan.c
index ed823df..603c96f 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -3203,6 +3203,7 @@ int zone_reclaim(struct zone *zone, gfp_t gfp_mask, unsigned int order)
  * Reasons page might not be evictable:
  * (1) page's mapping marked unevictable
  * (2) page is part of an mlocked VMA
+ * (3) page mapped into SHM_LOCK'd shared memory regions
  *
  */
 int page_evictable(struct page *page, struct vm_area_struct *vma)
-- 
1.7.9.5

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