From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794302192; b=O5v5l9fiYYSAahvVTriZnovUEhbQwZuB1YcO3fh2EUMombrZsgDNatH+8q7btV6RSZCQ kMs5n87G4/X1hCGpggKBmE2Ely7sR6dKnzOdtFdkm9Jb2lNlx7Ez+fS8YWRF7C5QN/vNk mSAz6X0yJ173vBkvx8wgyBrwOEZkryisdfZV+HM+kU9KOH6fnDbZXjx/qKk8tDO4F6z2k KpoF2xdO6RepSwq1v+mRnyPFsKDv6kwDMkreGkM4BtpMpXIPonWDPA3qmDuL8n+q0J0YH OqJHCtrZaWX2SPTziQtEREPOrDQurs04+rmEDrqsHGJx0LtIIxqsnHlxZ8gJZR2E+IA== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794302192; h=Received:DKIM-Signature:From:Date:Subject:MIME-Version:Content-Type: Content-Transfer-Encoding:Message-Id:References:In-Reply-To:To:Cc: X-Mailer:X-Developer-Signature:X-Developer-Key; bh=eGG9W0yWfKzRivIQZoE53ERZFH3qHATHiSAlm/rfViI=; b=NMbOlSXECiHXQDZsfb4n+hLapM2xhdpHv6upVwy4xzPpZrwFsPSkbq7yRlxBw1X6K/lv 77RF/qFd18L5il/8akaswLoBccbKjBBIqRDl4kEx78BuGXN/qTzBK0ESznT3RADK2PHht KJlS020feEOMckJkS2r2W1w8ErGRKphq1kKIJhw6PO3DZfG2vligZ+oVj2LEduGM/ybLt wuL542qUbh7KTSfgQDmZjqupG9y4LwTpIjsJT6Xu8uyy+GBLKLzetOYfGReonXN074mNE BcEaitVoScli4C+DvaHwCkbcmFu0+a3CKLLZs7YxbTvEzwVmj86x2a8Feiz/0+3hSaQ== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=CjYzYxSG; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3DCA9606A334; Tue, 10 Nov 2026 09:16:31 +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 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-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list 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 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