From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-out.m-online.net (mail-out.m-online.net [212.18.0.9]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5E20FB676; Sat, 29 Mar 2025 21:03:02 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=212.18.0.9 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1743282185; cv=none; b=W2qCv+sDaHyDsuns3X7iLJzVrmlVo8GzkmJ6NWAgup5JDGEiNBsr+9gPDD4kpLG4uO8zqpL3B4cH1ogRWusN5umqO88yv7B4rY9qm46vFwrV+q/8TUeBAIAUdPXjfDmhClyMzEM60YZe5VHj/2Aoi91GJwaenfalqJsh66sfLO4= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1743282185; c=relaxed/simple; bh=IIJbTvOzPGZvdlXdLLOLXU5Yu0aM8nzaH3r4IWbhGfI=; h=From:To:Cc:Subject:In-Reply-To:References:Date:Message-ID: MIME-Version:Content-Type; b=bOPPBM7OsjjgcVgxlsDqtdb12U5L8A+8sKUBu8fmIViAC8U0DMDLFE4xxD3T2P2/EjLdosK/pobNPH2j7eXgPilQoT1fGbdNhxXSDlze8OBrJxtdI4cOe/1ZoYAe51ty0cPJvoawO68350v2hOBW0HkiBjkoJiawx+b41eagDgQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=linux-m68k.org; spf=pass smtp.mailfrom=nefkom.net; arc=none smtp.client-ip=212.18.0.9 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=linux-m68k.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=nefkom.net Received: from frontend01.mail.m-online.net (unknown [192.168.8.182]) by mail-out.m-online.net (Postfix) with ESMTP id 4ZQ8kG6C0fz1r1s3; Sat, 29 Mar 2025 21:53:26 +0100 (CET) Received: from localhost (dynscan1.mnet-online.de [192.168.6.68]) by mail.m-online.net (Postfix) with ESMTP id 4ZQ8kG5ZhMz1qqlS; Sat, 29 Mar 2025 21:53:26 +0100 (CET) X-Virus-Scanned: amavis at mnet-online.de Received: from mail.mnet-online.de ([192.168.8.182]) by localhost (dynscan1.mail.m-online.net [192.168.6.68]) (amavis, port 10024) with ESMTP id lPSoEEpUtUBQ; Sat, 29 Mar 2025 21:53:17 +0100 (CET) X-Auth-Info: Y6AAP7TsKLrVm4YMSLPtyVF6xIUQV49sm4UcnEAeeh2WgEUg9Z4VQNwaaIwJ9B9O Received: from igel.home (aftr-82-135-83-159.dynamic.mnet-online.de [82.135.83.159]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by mail.mnet-online.de (Postfix) with ESMTPSA; Sat, 29 Mar 2025 21:53:17 +0100 (CET) Received: by igel.home (Postfix, from userid 1000) id EAB5F2C1954; Sat, 29 Mar 2025 21:53:16 +0100 (CET) From: Andreas Schwab To: Mateusz Guzik Cc: brauner@kernel.org, viro@zeniv.linux.org.uk, jack@suse.cz, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org Subject: Re: [PATCH 2/2] fs: cache the string generated by reading /proc/filesystems In-Reply-To: <20250329192821.822253-3-mjguzik@gmail.com> (Mateusz Guzik's message of "Sat, 29 Mar 2025 20:28:21 +0100") References: <20250329192821.822253-1-mjguzik@gmail.com> <20250329192821.822253-3-mjguzik@gmail.com> Date: Sat, 29 Mar 2025 21:53:16 +0100 Message-ID: <87h63bpnib.fsf@igel.home> User-Agent: Gnus/5.13 (Gnus v5.13) Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit On Mär 29 2025, Mateusz Guzik wrote: > It is being read surprisingly often (e.g., by mkdir, ls and even sed!). It is part of libselinux (selinuxfs_exits), called by its library initializer. -- Andreas Schwab, schwab@linux-m68k.org GPG Key fingerprint = 7578 EB47 D4E5 4D69 2510 2552 DF73 E780 A9DA AEC1 "And now for something completely different."