mm: vmscan: fix documentation for page_check_references()
authorCharan Teja Kalla <quic_charante@quicinc.com>
Tue, 22 Mar 2022 21:45:53 +0000 (14:45 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Tue, 22 Mar 2022 22:57:09 +0000 (15:57 -0700)
Commit b518154e59aa ("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>
mm/vmscan.c

index 24601f3..f5ec53f 100644 (file)
@@ -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