Message ID | 1582175513-22601-7-git-send-email-iamjoonsoo.kim@lge.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show
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Wed, 19 Feb 2020 21:12:22 -0800 (PST) Received: from localhost.localdomain ([114.206.198.176]) by smtp.gmail.com with ESMTPSA id t15sm1472599pgr.60.2020.02.19.21.12.19 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Wed, 19 Feb 2020 21:12:21 -0800 (PST) From: js1304@gmail.com X-Google-Original-From: iamjoonsoo.kim@lge.com To: Andrew Morton <akpm@linux-foundation.org> Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, Johannes Weiner <hannes@cmpxchg.org>, Michal Hocko <mhocko@kernel.org>, Hugh Dickins <hughd@google.com>, Minchan Kim <minchan@kernel.org>, Vlastimil Babka <vbabka@suse.cz>, Mel Gorman <mgorman@techsingularity.net>, kernel-team@lge.com, Joonsoo Kim <iamjoonsoo.kim@lge.com> Subject: [PATCH v2 6/9] mm/workingset: handle the page without memcg Date: Thu, 20 Feb 2020 14:11:50 +0900 Message-Id: <1582175513-22601-7-git-send-email-iamjoonsoo.kim@lge.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1582175513-22601-1-git-send-email-iamjoonsoo.kim@lge.com> References: <1582175513-22601-1-git-send-email-iamjoonsoo.kim@lge.com> X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: <linux-mm.kvack.org> |
Series |
workingset protection/detection on the anonymous LRU list
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expand
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diff --git a/mm/workingset.c b/mm/workingset.c index a9f474a..8d2e83a 100644 --- a/mm/workingset.c +++ b/mm/workingset.c @@ -257,6 +257,10 @@ void *workingset_eviction(struct page *page, struct mem_cgroup *target_memcg) VM_BUG_ON_PAGE(page_count(page), page); VM_BUG_ON_PAGE(!PageLocked(page), page); + /* page_memcg() can be NULL if swap-in readahead happens */ + if (!page_memcg(page)) + return NULL; + advance_inactive_age(page_memcg(page), pgdat, is_file); lruvec = mem_cgroup_lruvec(target_memcg, pgdat);