From mboxrd@z Thu Jan 1 00:00:00 1970 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 4E630C4167B for ; Tue, 31 May 2022 10:00:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S245446AbiEaKAg (ORCPT ); Tue, 31 May 2022 06:00:36 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43942 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S245410AbiEaKAR (ORCPT ); Tue, 31 May 2022 06:00:17 -0400 Received: from mail-ed1-x531.google.com (mail-ed1-x531.google.com [IPv6:2a00:1450:4864:20::531]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4341782170; Tue, 31 May 2022 03:00:16 -0700 (PDT) Received: by mail-ed1-x531.google.com with SMTP id v25so8726073eda.6; Tue, 31 May 2022 03:00:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=mIxGnBiNQH7wWhpTAOYvfGm3yBUdW2Lv8hSFkOKs0aA=; b=YDb0d+PyOKs210qCqYAFGBvUZTTS4RAIRhhK/d+QO9gshGdaDWgKspQVMQpG7nrtX+ TufVc/6A+Te4bjWf9pWyv6ntrZjNTvO1o8tYpzOoAdjIqo9Bklfzy8dXk7BYMrxpSM95 usfHUfKLh7JEKoG9wN5zLAoQm71wvfUxu+xCGMzIBHPjTBYFFRg/fQ8Bc1mbpWvV9bwY PR/pdpoW3OmlfWODJKjL9jIEkGs8hD/ZjjXmxLFGR2b/njvlb082VeR+rrGF1R55oj4p qQAdYumTKMLx79UKpj8YkktDQvBcFKlZvP9zcVhZ48lAtSdY31sMnKI1F4yE0kXKaL3w HsZw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=mIxGnBiNQH7wWhpTAOYvfGm3yBUdW2Lv8hSFkOKs0aA=; b=EzU/VTjDPqbd6mX5MnUJBZf5dPyBbmugrc/qa0bl+TwK43Qf7AD99U0bvcESR6zR7i 3uBLQU3dbVVm93HWnv8zNa6vg6WguSKa5Un9bCuy7dKs0HNmRzCbUEBMujEN1j7Ldd2q LTrUSQlTbvSldcKsL1Rw7lXSyxm/gy5ekjfZY5ZE1FH6IwCGWX+Va7+Tmhh2e0NiVbOz XEq+YQfaTbFCdPfOKoUMEiYwfKiwORZ+hFuE28k4dzcrKMwjJl4QTwnF2IVpf3aOS5A4 pgB22kveaeyPFoQZKeU/cuYogDzRX/UcPng8mYNfUE8j3BO2uPFe51bFVY/ykvKE//5T K6RA== X-Gm-Message-State: AOAM532YkWiHHg3W2caL6K9FJxax7zUFkECOtG86b0yNgY43FdMTcjqX tlWMlvEhHfSGl4LhnsYPMCrTQysD1KyrYQ== X-Google-Smtp-Source: ABdhPJym6XbAZzn9cN4OBs65hCeI931sSsPopVK1yV+b7qr9DjRRmdjRD8OGAyhyWkR+LhQlwkaGRQ== X-Received: by 2002:a50:8754:0:b0:42d:e92f:c924 with SMTP id 20-20020a508754000000b0042de92fc924mr902302edv.389.1653991214818; Tue, 31 May 2022 03:00:14 -0700 (PDT) Received: from able.fritz.box (p5b0ea02f.dip0.t-ipconnect.de. [91.14.160.47]) by smtp.gmail.com with ESMTPSA id r13-20020a056402018d00b0042617ba6389sm582062edv.19.2022.05.31.03.00.13 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 31 May 2022 03:00:14 -0700 (PDT) From: "=?UTF-8?q?Christian=20K=C3=B6nig?=" X-Google-Original-From: =?UTF-8?q?Christian=20K=C3=B6nig?= To: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, intel-gfx@lists.freedesktop.org, amd-gfx@lists.freedesktop.org, nouveau@lists.freedesktop.org, linux-tegra@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org Cc: christian.koenig@amd.com, alexander.deucher@amd.com, daniel@ffwll.ch, viro@zeniv.linux.org.uk, akpm@linux-foundation.org, hughd@google.com, andrey.grodzovsky@amd.com Subject: [PATCH 03/13] mm: shmem: provide oom badness for shmem files Date: Tue, 31 May 2022 11:59:57 +0200 Message-Id: <20220531100007.174649-4-christian.koenig@amd.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220531100007.174649-1-christian.koenig@amd.com> References: <20220531100007.174649-1-christian.koenig@amd.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This gives the OOM killer an additional hint which processes are referencing shmem files with potentially no other accounting for them. Signed-off-by: Christian König --- mm/shmem.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/mm/shmem.c b/mm/shmem.c index 4b2fea33158e..a4ad92a16968 100644 --- a/mm/shmem.c +++ b/mm/shmem.c @@ -2179,6 +2179,11 @@ unsigned long shmem_get_unmapped_area(struct file *file, return inflated_addr; } +static long shmem_oom_badness(struct file *file) +{ + return i_size_read(file_inode(file)) >> PAGE_SHIFT; +} + #ifdef CONFIG_NUMA static int shmem_set_policy(struct vm_area_struct *vma, struct mempolicy *mpol) { @@ -3780,6 +3785,7 @@ EXPORT_SYMBOL(shmem_aops); static const struct file_operations shmem_file_operations = { .mmap = shmem_mmap, .get_unmapped_area = shmem_get_unmapped_area, + .oom_badness = shmem_oom_badness, #ifdef CONFIG_TMPFS .llseek = shmem_file_llseek, .read_iter = shmem_file_read_iter, -- 2.25.1