From nobody Wed Feb 11 08:10:40 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8CB3DC6FD1D for ; Tue, 4 Apr 2023 12:01:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234564AbjDDMBf (ORCPT ); Tue, 4 Apr 2023 08:01:35 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41490 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234530AbjDDMBa (ORCPT ); Tue, 4 Apr 2023 08:01:30 -0400 Received: from mail-pj1-x102b.google.com (mail-pj1-x102b.google.com [IPv6:2607:f8b0:4864:20::102b]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C374335BD for ; Tue, 4 Apr 2023 05:01:29 -0700 (PDT) Received: by mail-pj1-x102b.google.com with SMTP id gp15-20020a17090adf0f00b0023d1bbd9f9eso35910225pjb.0 for ; Tue, 04 Apr 2023 05:01:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; t=1680609689; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=BXv1GcIP0b01WCB0dxAHE5qtL4a0jd48WmxV6aMJGEI=; b=GhUPSo9sh6Zwwfo4h+KoyiwNBesV7G+G8J1L0pQX0JIU2wZv09kHmO7svPlTwq7tWY W0Wc6i0y6qoBqfdiEgvioqzZqSn479UQH0LZb+QYhGBOawXvCQgAYwZy+crfeg95NXWc /4gHmZ1MbS8u0pbiY4snCi0+AH22BTnSmnjRM= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1680609689; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=BXv1GcIP0b01WCB0dxAHE5qtL4a0jd48WmxV6aMJGEI=; b=0f1tej/pgTWeO228olyOCajS/CUl4dCVzmlxRTz0MCGomPNF+F0h3S3By41HYaS5Sx Zp0HLaSk3mmszvNEwpsT6x865eGeLayoVm8VhipmpyWU/WKBPRT0xjvhOyAg4yt5eNLU wl29EbLki7y/sArY0WyfZdMoEVcOfN/aq7bwTKXXnLcIcxCGWZ77YXNs+tyTlTmALKKI wEVtrGchhhaaDv4+23y2o3sR/7ZpuRjtgWupRFoDpzMY5o94EsNWdI17olcW4/eYMe5K +D/bWTp+bXvCFntNWXsNGohMjTuTeOLJzNkBhALsPnEPef/HdSz8xnst/Pz8P8dr19NT nGlw== X-Gm-Message-State: AAQBX9dVhtuCjkscNNl1cbAxgxLGpZpSpIgOtm3ACB6wYMn+N92n4jJw Yf5JhOcVbix/bHPBqFdId5zJcQ== X-Google-Smtp-Source: AKy350asjKP3U0+twDNYb29W50NssXzM9KfQVg707hZ1pElnupMPu2X9cFoRAu3bB4exQZa/RnwHDg== X-Received: by 2002:a17:903:32c2:b0:1a2:98b1:1ee2 with SMTP id i2-20020a17090332c200b001a298b11ee2mr3128683plr.15.1680609689270; Tue, 04 Apr 2023 05:01:29 -0700 (PDT) Received: from localhost ([2401:fa00:8f:203:959b:21ea:166b:c273]) by smtp.gmail.com with UTF8SMTPSA id l2-20020a17090aec0200b0022335f1dae2sm7834214pjy.22.2023.04.04.05.01.26 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 04 Apr 2023 05:01:28 -0700 (PDT) From: David Stevens X-Google-Original-From: David Stevens To: linux-mm@kvack.org, Peter Xu , Hugh Dickins Cc: Andrew Morton , Matthew Wilcox , "Kirill A . Shutemov" , Yang Shi , David Hildenbrand , Jiaqi Yan , linux-kernel@vger.kernel.org, David Stevens Subject: [PATCH v6 1/4] mm/khugepaged: drain lru after swapping in shmem Date: Tue, 4 Apr 2023 21:01:14 +0900 Message-Id: <20230404120117.2562166-2-stevensd@google.com> X-Mailer: git-send-email 2.40.0.348.gf938b09366-goog In-Reply-To: <20230404120117.2562166-1-stevensd@google.com> References: <20230404120117.2562166-1-stevensd@google.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: David Stevens Call lru_add_drain after swapping in shmem pages so that isolate_lru_page is more likely to succeed. Signed-off-by: David Stevens --- mm/khugepaged.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/mm/khugepaged.c b/mm/khugepaged.c index 666d2c4e38dd..90577247cfaf 100644 --- a/mm/khugepaged.c +++ b/mm/khugepaged.c @@ -1963,6 +1963,8 @@ static int collapse_file(struct mm_struct *mm, unsign= ed long addr, result =3D SCAN_FAIL; goto xa_unlocked; } + /* drain pagevecs to help isolate_lru_page() */ + lru_add_drain(); page =3D folio_file_page(folio, index); } else if (trylock_page(page)) { get_page(page); --=20 2.40.0.348.gf938b09366-goog