diff mbox series

[042/118] mm/rmap: fix obsolete comment in __page_check_anon_rmap()

Message ID 20210226011759.fJf9U1f9p%akpm@linux-foundation.org (mailing list archive)
State New
Headers show
Series [001/118] mm: make pagecache tagged lookups return only head pages | expand

Commit Message

Andrew Morton Feb. 26, 2021, 1:17 a.m. UTC
From: Miaohe Lin <linmiaohe@huawei.com>
Subject: mm/rmap: fix obsolete comment in __page_check_anon_rmap()

Commit 21333b2b66b8 ("ksm: no debug in page_dup_rmap()") has reverted
page_dup_rmap() to an inline atomic_inc of mapcount.  So page_dup_rmap()
does not call __page_check_anon_rmap() anymore.

Link: https://lkml.kernel.org/r/20210128110209.50857-1-linmiaohe@huawei.com
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

 mm/rmap.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)
diff mbox series


--- a/mm/rmap.c~mm-rmap-fix-obsolete-comment-in-__page_check_anon_rmap
+++ a/mm/rmap.c
@@ -1086,8 +1086,7 @@  static void __page_check_anon_rmap(struc
 	 * be set up correctly at this point.
 	 * We have exclusion against page_add_anon_rmap because the caller
-	 * always holds the page locked, except if called from page_dup_rmap,
-	 * in which case the page is already known to be setup.
+	 * always holds the page locked.
 	 * We have exclusion against page_add_new_anon_rmap because those pages
 	 * are initially only visible via the pagetables, and the pte is locked