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mm/memcg: remove incorrect comment

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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: Alex 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: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Alex Shi 2020-12-14 19:07:10 -08:00 committed by Linus Torvalds
parent 5ab92901fe
commit 7f41506baa
1 changed files with 0 additions and 1 deletions
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mm/memcontrol.c
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@ -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;