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    SubjectRe: [PATCH -V11 7/9] mm/vmscan: Consider anonymous pages without swap
    Date
    On 21 Jul 2021, at 2:39, Huang Ying wrote:

    > From: Keith Busch <kbusch@kernel.org>
    >
    > Reclaim anonymous pages if a migration path is available now that demotion
    > provides a non-swap recourse for reclaiming anon pages.
    >
    > Note that this check is subtly different from the can_age_anon_pages()
    > checks. This mechanism checks whether a specific page in a specific
    > context can actually be reclaimed, given current swap space and cgroup
    > limits.
    >
    > can_age_anon_pages() is a much simpler and more preliminary check which
    > just says whether there is a possibility of future reclaim.
    >
    > Link: https://lkml.kernel.org/r/20210715055145.195411-8-ying.huang@intel.com
    > Cc: Keith Busch <kbusch@kernel.org>
    > Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
    > Signed-off-by: "Huang, Ying" <ying.huang@intel.com>
    > Reviewed-by: Yang Shi <shy828301@gmail.com>
    > Cc: Michal Hocko <mhocko@suse.com>
    > Cc: Zi Yan <ziy@nvidia.com>
    > Cc: Wei Xu <weixugc@google.com>
    > Cc: David Rientjes <rientjes@google.com>
    > Cc: Dan Williams <dan.j.williams@intel.com>
    > Cc: David Hildenbrand <david@redhat.com>
    > Cc: Greg Thelen <gthelen@google.com>
    > Cc: Oscar Salvador <osalvador@suse.de>
    > Cc: Yang Shi <yang.shi@linux.alibaba.com>
    > Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
    > ---
    > mm/vmscan.c | 34 ++++++++++++++++++++++++++++++----
    > 1 file changed, 30 insertions(+), 4 deletions(-)

    LGTM. Reviewed-by: Zi Yan <ziy@nvidia.com>


    Best Regards,
    Yan, Zi
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