Commit 7f41506b authored by Alex Shi's avatar Alex Shi Committed by Linus Torvalds
Browse files

mm/memcg: remove incorrect comment 

Swapcache readahead pages are charged before being used, so it is unlikely
that they will be migrated before charging.  Remove the incorrect comment.

Link: https://lkml.kernel.org/r/1605864930-49405-1-git-send-email-alex.shi@linux.alibaba.com


Signed-off-by: default avatarAlex Shi <alex.shi@linux.alibaba.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 5ab92901

mm/memcontrol.c

+0 −1
Original line number Diff line number Diff line
@@ -6903,7 +6903,6 @@ void mem_cgroup_migrate(struct page *oldpage, struct page *newpage) 
	if (newpage->mem_cgroup)

		return;



	/* Swapcache readahead pages can get replaced before being charged */

	memcg = oldpage->mem_cgroup;

	if (!memcg)

		return;