mm: vmscan: fix documentation for page_check_references()

Commit b6df587f15fc ("mm/vmscan: protect the workingset on anonymous
LRU") requires to look twice for both mapped anon/file pages are used
more than once to take the decission of reclaim or activation.  Correct
the documentation accordingly.

Link: https://lkml.kernel.org/r/1646925640-21324-1-git-send-email-quic_charante@quicinc.com
Signed-off-by: Charan Teja Kalla <quic_charante@quicinc.com>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/mm/vmscan.c b/mm/vmscan.c
index 24601f394c2560f5836de23b857a0556793aef2e..f5ec53f19f3b28d317c347a7cc4fe0295ffdc234 100644 (file)
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -1385,7 +1385,7 @@ static enum page_references page_check_references(struct page *page,
                /*
                 * All mapped pages start out with page table
                 * references from the instantiating fault, so we need
-                * to look twice if a mapped file page is used more
+                * to look twice if a mapped file/anon page is used more
                 * than once.
                 *
                 * Mark it and spare it for another trip around the