From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794342041; b=DQXsUkQu9530B/nhoBQ0zMsUyZDldnyTA+DC5h5o+D96iZeU5cGlvmSU/IU49U8EZwe0 zMqa6AB9bZ1+dOlcL/Xu17eYuYzWMRsZzUWI1woA8y5Jp19/s/Kb9OWgi5WN/hLw1OViI 4frkWI+ckhgN9LielTZ2oLj+BuJaEE2Q97fvZfoRvaSVXzOb7lBuqRu3peK0KaqThoW3T q2ikiBhTOCN+zDTtlya97igQVxa1VzDUcrI+YnvF/LrXdrjMInrtoeWJYjxmnY2jDfdZO CPAa1gg+ufYlJfx+n/QVQUVAX3DaLHc9dMenSvIHOXiX1MXsmFMhzPi2wpdhDe4dacA== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794342041; h=Received:DKIM-Signature:From:To:Cc:Subject:Date:Message-Id:X-Mailer: In-Reply-To:References:MIME-Version:Content-Transfer-Encoding; bh=XP8BVGG3k/SgxxucX4Qss0oWT0tMPudgWX8MpTd7f+o=; b=a2dH3p4SEgEYuaof1a57sC+LrouXR3o1mrkuKZrkVI1uWTpR9rIOiymHLOfLCDBgl+3L p0B2Oi18AIdx2tBSZr9qGnClHo7ugvoKaPLIx83fxFLqK18sNATGCrcpmg5ygb9DNxlT2 Q01535P3MexGjek0Yx7QDl1JlrcON+26BTD9HBnmp2SRKHD9L53uQun8eNx+rXxuzO7sB h5OLJUnh+NVDh0OVy+9ImCUaMOKjMF4JDIRU7D8H/Pd173IY+W9EhCTdRzYY5KTVHP0A5 j+eWn/uPVfzuA/LbwRaRyZPw4rNMCIjjHLTu2VVzzvEjK6+URt37G3qDdTRJD67NM+A== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=P13YjycL; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 25DE160A6F4F for ; Tue, 10 Nov 2026 20:20:40 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=P13YjycL Received: by smtp.kernel.org (Postfix) with ESMTPSA id F01B91F008A5; Tue, 10 Nov 2026 20:20:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1794342040; bh=XP8BVGG3k/SgxxucX4Qss0oWT0tMPudgWX8MpTd7f+o=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=P13YjycLN4F4N+zD38vWSxkt6HKL82woeFH/3wQ0qxOXtm7u3KffXFHkfHkmDPJZS tfYSVHjrhhJqJ8C9aG5U1no+kDK09JEao8rZzOGUHE0ytYlmMIHTORE14d7+GISbrA cVnCLkQ4XmoDZ93o6axAh7bDumtY3VptUIyaPbzqhl42raKoOQpkm0xP6HplEWn3Uz hwRN7qCqOMNLtoel7IGi0JUsHfS0eL8ifsfnzV1R1o6U5VGJg5mxLM/kbP2eNabEcR sIRLxehDzZQ/x962ZTEwOQKCosmyJC5gKH22risR7sCIXHDYgY0vr4IFGiBzSrH8dQ KK7FOND2vOxrA== From: "Barry Song (Xiaomi)" To: akpm@linux-foundation.org, linux-mm@kvack.org Cc: axelrasmussen@google.com, baolin.wang@linux.alibaba.com, baoquan.he@linux.dev, hannes@cmpxchg.org, hui.zhu@linux.dev, kasong@tencent.com, kunwu.chan@gmail.com, liam@infradead.org, lianux.mm@gmail.com, linux-kernel@vger.kernel.org, liuxiang.277@bytedance.com, lyugaofei@xiaomi.com, mhocko@kernel.org, mhocko@suse.com, qi.zheng@linux.dev, ridong.chen@linux.dev, rppt@kernel.org, ryncsn@gmail.com, shakeel.butt@linux.dev, surenb@google.com, wangzicheng@honor.com, weixugc@google.com, yuanchu@google.com, zhangbo56@xiaomi.com, zhuhui@kylinos.cn, sidchintamaneni@gmail.com, Barry Song Subject: [PATCH v6 01/15] mm/mglru: report evictable sizes per type Date: Wed, 11 Nov 2026 04:20:11 +0800 Message-Id: <20261110202025.25736-2-baohua@kernel.org> X-Mailer: git-send-email 2.39.3 (Apple Git-146) In-Reply-To: <20261110202025.25736-1-baohua@kernel.org> References: <20261110202025.25736-1-baohua@kernel.org> X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Kairui Song Change lruvec_evictable_size() to return the number of evictable anonymous and file pages separately instead of a single total, so that callers can weigh the two types independently. Update lruvec_is_sizable() and get_nr_to_scan() accordingly; the summed totals are unchanged, so there is no functional change. Signed-off-by: Kairui Song Signed-off-by: Barry Song (Xiaomi) Reviewed-by: Kunwu Chan --- mm/vmscan.c | 22 +++++++++++++--------- 1 file changed, 13 insertions(+), 9 deletions(-) diff --git a/mm/vmscan.c b/mm/vmscan.c index 061fbd168d98..acc4efccda2f 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -4192,28 +4192,31 @@ static void set_initial_priority(struct pglist_data *pgdat, struct scan_control sc->priority = clamp(priority, DEF_PRIORITY / 2, DEF_PRIORITY); } -static unsigned long lruvec_evictable_size(struct lruvec *lruvec, int swappiness) +static void lruvec_evictable_size(struct lruvec *lruvec, int swappiness, + unsigned long nr[]) { int type; - unsigned long seq, total = 0; + unsigned long seq; struct lru_gen_folio *lrugen = &lruvec->lrugen; DEFINE_MAX_SEQ(lruvec); DEFINE_MIN_SEQ(lruvec); + nr[LRU_GEN_ANON] = 0; + nr[LRU_GEN_FILE] = 0; + for_each_evictable_type(type, swappiness) { for (seq = min_seq[type]; seq <= max_seq; seq++) - total += lruvec_gen_size(lrugen, type, seq); + nr[type] += lruvec_gen_size(lrugen, type, seq); } - - return total; } static bool lruvec_is_sizable(struct lruvec *lruvec, struct scan_control *sc) { - unsigned long total; + unsigned long total, sizes[ANON_AND_FILE]; int swappiness = get_swappiness(lruvec, sc); - total = lruvec_evictable_size(lruvec, swappiness); + lruvec_evictable_size(lruvec, swappiness, sizes); + total = sizes[LRU_GEN_ANON] + sizes[LRU_GEN_FILE]; /* whether the size is big enough to be helpful */ return total >> sc->priority; @@ -5021,7 +5024,7 @@ static bool should_run_aging(struct lruvec *lruvec, unsigned long max_seq, static long get_nr_to_scan(struct lruvec *lruvec, struct scan_control *sc, struct mem_cgroup *memcg, int swappiness) { - unsigned long nr_to_scan, evictable; + unsigned long nr_to_scan, evictable, sizes[ANON_AND_FILE]; struct pglist_data *pgdat = lruvec_pgdat(lruvec); /* @@ -5037,7 +5040,8 @@ static long get_nr_to_scan(struct lruvec *lruvec, struct scan_control *sc, return 0; } - evictable = lruvec_evictable_size(lruvec, swappiness); + lruvec_evictable_size(lruvec, swappiness, sizes); + evictable = sizes[LRU_GEN_ANON] + sizes[LRU_GEN_FILE]; nr_to_scan = apply_proportional_protection(memcg, sc, evictable); nr_to_scan >>= sc->priority; -- 2.34.1