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[2620:137:e000::1:20]) by mx.google.com with ESMTP id l190-20020a6388c7000000b003fc66830014si32969693pgd.795.2022.06.09.09.13.54; Thu, 09 Jun 2022 09:14:08 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@suse.com header.s=susede1 header.b=WeDq7XZh; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=suse.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344030AbiFIPyQ (ORCPT + 99 others); Thu, 9 Jun 2022 11:54:16 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43476 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344075AbiFIPyM (ORCPT ); Thu, 9 Jun 2022 11:54:12 -0400 Received: from smtp-out2.suse.de (smtp-out2.suse.de [195.135.220.29]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D354C31DC4; Thu, 9 Jun 2022 08:54:09 -0700 (PDT) Received: from relay2.suse.de (relay2.suse.de [149.44.160.134]) by smtp-out2.suse.de (Postfix) with ESMTP id 5FDBB1FEA9; Thu, 9 Jun 2022 15:54:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1654790048; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=jZtcZUbZig1UhIcXMJ758dp36LQQ/d16e8zqnLoYBUI=; b=WeDq7XZhXURQuDayn95bRWP62X8BWXvBWugF0x6+pE4jsWM4S9ZNndFwfvt1GcJxeIMrCZ sg5yXPKNGFmFwwTy5w1f5UsEiyFE3HKe7evhJUnwKy37LUQ9n6BAxBciF4GE87AHj9LJ0Q KzeXJveNtrfE/koMZPau6VmuysgUvhM= Received: from suse.cz (unknown [10.100.201.86]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by relay2.suse.de (Postfix) with ESMTPS id 090D02C141; Thu, 9 Jun 2022 15:54:07 +0000 (UTC) Date: Thu, 9 Jun 2022 17:54:07 +0200 From: Michal Hocko To: Christian =?iso-8859-1?Q?K=F6nig?= Cc: Felix Kuehling , Christian =?iso-8859-1?Q?K=F6nig?= , 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, alexander.deucher@amd.com, daniel@ffwll.ch, viro@zeniv.linux.org.uk, akpm@linux-foundation.org, hughd@google.com, andrey.grodzovsky@amd.com Subject: Re: [PATCH 03/13] mm: shmem: provide oom badness for shmem files Message-ID: References: <20220531100007.174649-1-christian.koenig@amd.com> <20220531100007.174649-4-christian.koenig@amd.com> <77b99722-fc13-e5c5-c9be-7d4f3830859c@amd.com> <26d3e1c7-d73c-cc95-54ef-58b2c9055f0c@gmail.com> <41dc3e5a-9e90-70df-74df-ccdf8fa5ae86@amd.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <41dc3e5a-9e90-70df-74df-ccdf8fa5ae86@amd.com> X-Spam-Status: No, score=-4.4 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_MED,SPF_HELO_NONE, SPF_PASS,T_SCC_BODY_TEXT_LINE,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu 09-06-22 17:22:14, Christian K?nig wrote: [...] > Those files were never part of any filesystem in the first place, so by > killing all the process referencing them you can indeed free the memory > locked by them. Yes, this would require the oom killer to understand that all processes referencing that file are killed. Theoretically possible but I am not sure a feasible solution. -- Michal Hocko SUSE Labs