mm/memcg: minor cleanup for mc_handle_present_pte()

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When pagetable lock is held, the page will always be page_mapped().  So
remove unneeded page_mapped() check.  Also the page can't be freed from
under us in this case.  So use get_page() to get extra page reference to
simplify the code.  No functional change intended.

Link: https://lkml.kernel.org/r/20230717113644.3026478-1-linmiaohe@huawei.com
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Roman Gushchin <roman.gushchin@linux.dev>
Cc: Shakeel Butt <shakeelb@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

...

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Miaohe Lin 2023-07-17 19:36:44 +08:00 • committed by Andrew Morton

parent 43b3dfdd04

commit 58f341f772

1 changed files with 2 additions and 3 deletions

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mm/memcontrol.c

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