From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.subspace.kernel.org (Postfix) with ESMTP id DE361606A336 for ; Tue, 10 Nov 2026 09:16:35 +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=CjYzYxSG Received: by kanga.kvack.org (Postfix) id E083E6B05BB; Tue, 10 Nov 2026 04:16:34 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id D91B96B05BC; Tue, 10 Nov 2026 04:16:34 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id C59B66B05BD; Tue, 10 Nov 2026 04:16:34 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0011.hostedemail.com [216.40.44.11]) by kanga.kvack.org (Postfix) with ESMTP id 9CBF36B05BB for ; Tue, 10 Nov 2026 04:16:34 -0500 (EST) Received: from smtpin10.hostedemail.com (lb01a-stub [10.200.18.249]) by unirelay04.hostedemail.com (Postfix) with ESMTP id 275011A0147 for ; Tue, 10 Nov 2026 09:16:34 +0000 (UTC) X-FDA: 85418653908.10.D46C236 Received: from tor.source.kernel.org (tor.source.kernel.org [172.105.4.254]) by imf16.hostedemail.com (Postfix) with ESMTP id 7472B180006 for ; Tue, 10 Nov 2026 09:16:32 +0000 (UTC) Authentication-Results: imf16.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20260515 header.b=CjYzYxSG; dmarc=pass (policy=quarantine) header.from=kernel.org; spf=pass (imf16.hostedemail.com: domain of brauner@kernel.org designates 172.105.4.254 as permitted sender) smtp.mailfrom=brauner@kernel.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1794302192; h=from:from:sender:reply-to:subject:subject: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:dkim-signature; bh=eGG9W0yWfKzRivIQZoE53ERZFH3qHATHiSAlm/rfViI=; b=krQwU1txFRN2y1iKWe1TrAuJNaQaAyp64zue6PGmE87DIX1/bfcs7EH8+WrTp4fxazn487 RcKUwlC0JTuEN3ix/Ruy/+TLR0I9MyOSUs0oJ/OXWqH3rdk27z8k/Dq10R/gal2mlTZw85 JcUsrcbt0/v1mJE2YZC0q6mYvALwHrA= ARC-Authentication-Results: i=1; imf16.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20260515 header.b=CjYzYxSG; dmarc=pass (policy=quarantine) header.from=kernel.org; spf=pass (imf16.hostedemail.com: domain of brauner@kernel.org designates 172.105.4.254 as permitted sender) smtp.mailfrom=brauner@kernel.org ARC-Seal: i=1; a=rsa-sha256; d=hostedemail.com; s=arc-20220608; cv=none; t=1794302192; b=RGmtnkT0ksJFd9uLgo1D3buBO9M1VmwNoNF55vAP6G2TFn2uMoul4Bc+W3//fbAJIFjEdl xfc6Hy9G+4Tecu6A4M4C6olTK93KbArdSF9hI39T9MoNDmOjfPyUoXmaK+KifHSPa+XBYm I/g+XsXh0K4hYQnoMAa1CtQ2VtFE0tw= Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by tor.source.kernel.org (Postfix) with ESMTP id 1686F611CD; Tue, 10 Nov 2026 09:16:32 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8126C1F00902; Tue, 10 Nov 2026 09:16:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1794302191; bh=eGG9W0yWfKzRivIQZoE53ERZFH3qHATHiSAlm/rfViI=; h=From:Date:Subject:References:In-Reply-To:To:Cc; b=CjYzYxSG4MF/PYOuhfPotw8YsrgHpqEMmvVsealc1nZYA5sYB8ePEA/BT0law6L4c H4DwOy7PJ6PWOuylSpgYpzMq2zQGYiIT8+FEalpf9CzWwtAbdti5C3COkrTAoZVyOC 98zYnncAcJul/uKitX7mc2xPlqIIYPds4N05d66Wgi6oSv9azb1TV2yyF+MJgyG+uT +q4Aq0251HvqT0ZVS0wHPkEhV8CPEhOZQuBNIukUVbH00aNshGt3HqKek36mnvJebH 4omkN8WkJOC0ohRp48kohw45G0TEI0wyMWnb2yC/I1jgI5cFhMlDgFavrTXU4YWzSj 7d78+YdkJ4mOA== From: Christian Brauner Date: Tue, 10 Nov 2026 10:14:21 +0100 Subject: [PATCH RFC 05/41] kernfs: use fc_init_pseudo() X-Archived-By: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20261110-work-loop-pseudo-v1-5-4c998976c6c7@kernel.org> References: <20261110-work-loop-pseudo-v1-0-4c998976c6c7@kernel.org> In-Reply-To: <20261110-work-loop-pseudo-v1-0-4c998976c6c7@kernel.org> To: linux-fsdevel@vger.kernel.org Cc: Jann Horn , Chris Mason , Josef Bacik , Christoph Hellwig , linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, linux-nvme@lists.infradead.org, Alexander Viro , Jan Kara , linux-scsi@vger.kernel.org, target-devel@vger.kernel.org, driver-core@lists.linux.dev, linux-mm@kvack.org, bpf@vger.kernel.org, linux-security-module@vger.kernel.org, selinux@vger.kernel.org, apparmor@lists.ubuntu.com, linux-nfs@vger.kernel.org, netdev@vger.kernel.org, fuse-devel@lists.linux.dev, linux-efi@vger.kernel.org, xen-devel@lists.xenproject.org, ocfs2-devel@lists.linux.dev, linux-s390@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-usb@vger.kernel.org, Amir Goldstein , linux-erofs@lists.ozlabs.org, linux-kselftest@vger.kernel.org, "Christian Brauner (Amutable)" X-Mailer: b4 0.17-dev-ce4c1 X-Developer-Signature: v=1; a=openpgp-sha256; l=1308; i=brauner@kernel.org; h=from:subject:message-id; bh=oxvnYqP+iDvCdTKHYHpfovNIFRCjsigYBDc/6gG4KoE=; b=owGbwMvMwCU28Zj0gdSKO4sYT6slMWR9ejDzzd/Z9nGXbsVbBqjycnSqNVW8nKT5dary583xR 9dNDt3g2VHKwiDGxSArpsji0G4SLrecp2KzUaYGzBxWJpAhDFycAjCRjaGMDOv3/hK7rKMoLKFw cJvq3Wdf7eI+x+zYPCvtnPsBx+pD2VMYGd6l2F1wrJl6IHntnnLtfb/v/1wpEWL5tkZ74nuPD8z fDFkB X-Developer-Key: i=brauner@kernel.org; a=openpgp; fpr=4880B8C9BD0E5106FC070F4F7B3C391EFEA93624 X-Rspamd-Server: rspam03 X-Rspamd-Queue-Id: 7472B180006 X-Stat-Signature: 6cunjzhejy3bnxr7nzyx7or11ak77ue6 X-Rspam-User: X-Spam-Status: No, score=-18.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_PASS, SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=4.0.1 X-HE-Tag: 1794302192-591521 X-HE-Meta: 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 e10S/xdf 4nILf53ecjX2+tk7jfO1rSeV1c8vK4Uye1looJKwyCYwfRsMI/AtDSgQT33em1JAKRQk2t3rhILMbe/EBQ5GnVps5tG462xbH0ItiKRV8mzsOIR0ArlD+jSbEufNTE0XpPemX3z9KbIYDEWpGbf79mvKGzL6nIpBt3+Kp0Ja/VBOr0gvlCfmePKjSXIcO+I4JZjUvatmMbN5jKgcjwXsrbkUyXUiJuVwT9+ExMaAQPUCKUi/ZMQXgpISOrl7Cclcd0f1Kc2inAfiap3J5lzFR0uPLMaw8gntgdvzyt4t6eWhguEOxOJnhk2zsa3LV4Od/KPlt1LejyBK+084= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 Initialize all kernfs based filesystems as pseudo filesystems in kernfs_get_tree() instead of raising SB_I_NOEXEC and SB_I_NODEV by hand in kernfs_fill_super(). This adds SB_I_PSEUDO for sysfs, cgroupfs and resctrl. Signed-off-by: Christian Brauner (Amutable) --- fs/kernfs/mount.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/fs/kernfs/mount.c b/fs/kernfs/mount.c index a0be784bfb06..6b60d212b003 100644 --- a/fs/kernfs/mount.c +++ b/fs/kernfs/mount.c @@ -8,6 +8,7 @@ */ #include +#include #include #include #include @@ -298,8 +299,6 @@ static int kernfs_fill_super(struct super_block *sb, struct kernfs_fs_context *k struct dentry *root; info->sb = sb; - /* Userspace would break if executables or devices appear on sysfs */ - sb->s_iflags |= SB_I_NOEXEC | SB_I_NODEV; sb->s_blocksize = PAGE_SIZE; sb->s_blocksize_bits = PAGE_SHIFT; sb->s_magic = kfc->magic; @@ -388,6 +387,7 @@ int kernfs_get_tree(struct fs_context *fc) info->ns = kfc->ns_tag; INIT_LIST_HEAD(&info->node); + fc_init_pseudo(fc); fc->s_fs_info = info; sb = sget_fc(fc, kernfs_test_super, kernfs_set_super); if (IS_ERR(sb)) -- 2.53.0