From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=209.85.218.47 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794564338; b=KiqrMopEcdd6iyJ2N2app1larOdYyhmMKolXd6gqVAkiQ5kDsQAkaq+1HA/4SxOoBNg1 UaahAAZ9Fb2CMm22RbOUjtFTkX2xgrtr0pCzQwrdacnAYdkly5otmM/R6YFMNTyxYDW1i syrWIIlQUnClxGPCyHmY3l9jgeM++WPhelsoUUY6mMDPIw6lsY1fLdQ6sQ25dbsI78AV2 prCXeYEFb4aUMLu34S0+AeWG+eCQvUoaoNt9z+W46BcG2b1RWqnDeonFTa6U149UGnLU7 mNVmCX5heQvpZ7oOEYT85Vgj3Knat57/qwF/BxvWeVjv1XhYx2p+98OzQIatSQ32ZAw== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794564338; h=DMARC-Filter:Received:DKIM-Signature:X-Google-DKIM-Signature: X-Forwarded-Encrypted:X-Gm-Message-State:X-Gm-Gg:X-Received:Received: Message-ID:Subject:From:To:Cc:Date:In-Reply-To:References: Content-Type:Content-Transfer-Encoding:User-Agent:MIME-Version; bh=/ZNAGjGCHSUHK/hbpNrctHFuArQcFUaSPHFuYTd8W2k=; b=GnRe/B/Z1ACyTu+ht0aA+7wMnh2wn3IlWzwz6WLBHd0upNyZ2JmfXPicCT9o8DoCAqB6 KqcONHxe8BcrTNEeI/A6DEkC4hdnMnJKAzk/UCTlr5LDACTyWWmKtT1DqzphUNWRjJf+d C3rZMDdwKJzJkcbhKwOWudhv6HlbUWzwZb52n50FGJ6bd51qKvUI/i/dCs3YYDB5+mzqf vTdfVOAHIgKrRM0faE+UpbD6DSI1NzQK+ALIsk98/tQcOonMlEFcZlWT+FW3Iafm9LAA1 7MFtEpKQFanJ4dmi+TIfWuFkxua1sOqHa5Dda6WESffHunDsPlckIITxFcso6txR0Gw== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none header.from=amutable.com; spf=pass smtp.mailfrom=amutable.com; dkim=pass header.d=amutable-com.20260707.gappssmtp.com header.i=@amutable-com.20260707.gappssmtp.com header.a=rsa-sha256 header.s=20260707 header.b="BcN8/JZ3"; arc=none smtp.remote-ip=209.85.218.47 Received: from mail-ej1-f47.google.com (mail-ej1-f47.google.com [209.85.218.47]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id EC18C606B13A for ; Fri, 13 Nov 2026 10:05:37 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org EC18C606B13A Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=amutable.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=amutable.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=amutable-com.20260707.gappssmtp.com header.i=@amutable-com.20260707.gappssmtp.com header.a=rsa-sha256 header.s=20260707 header.b=BcN8/JZ3 Received: by mail-ej1-f47.google.com with SMTP id a640c23a62f3a-c50a2efbe1dso79591166b.3 for ; Fri, 13 Nov 2026 02:05:37 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amutable-com.20260707.gappssmtp.com; s=20260707; t=1794564336; x=1795169136; darn=vger.kernel.org; h=mime-version:user-agent:content-transfer-encoding:content-type :references:in-reply-to:date:cc:to:from:subject:message-id:from:to :cc:subject:date:message-id:reply-to:content-type; bh=/ZNAGjGCHSUHK/hbpNrctHFuArQcFUaSPHFuYTd8W2k=; b=BcN8/JZ3o8G8RngOszXG3JTNOcmRF7Y5HhcgHfEFuj8bd59D6/ZB+k5Qh/rpeFRCcR ddACGgLLZgU5b3f6uROOjMlLzNHxLpnDWTvmFTIG7dNNkaJHDW07G6TO1gom3Rvc3G6a phj31A4a6/nEoCYWD8i1KXLteYhy5qLcfDwMY03tf9yOOPsaa+sC0St/LDVgowIEHsk0 tZO/CMI2RrlSiK2F32OSWBbCdipxonxIIN0DBtho56nDsRF+fFDKa92VHmnJVt2oHACg qH7hz+1dQBsoiVIgFoQGohYiLAIIKP/PCGAm0hHsixZQutOWB167lk9DbkeNw+vQ2Hrh L2Sg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20260707; t=1794564336; x=1795169136; h=mime-version:user-agent:content-transfer-encoding:content-type :references:in-reply-to:date:cc:to:from:subject:message-id:x-gm-gg :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to :content-type; bh=/ZNAGjGCHSUHK/hbpNrctHFuArQcFUaSPHFuYTd8W2k=; b=K4sF8M9S2YxCflg80YVF90Rd2Ah6tcJZfmL0+LvAUBnywHeYJ+EFYGHca9T0scUfuy Q5wPcexJGF1l6Z7SdtoERO2tBFIlCSG4M9ZBISINM7QVT1V5cfNlqNrUP6S2asN8qsLH 0aQxwskTXK406wUznStEgqYEv4haJYG02dZOVnJN8qAtMgDTkfrmXXski7KTDkgDLvto xuuFTzrZWbF0wHR/RT94efMawaOhC3XvKui2F8BvhmRPtYb2xluNnXlu+1fbxbdoc9ww Gs2bPeYiLWH7GRBRMW1SKDEz6M8wGpR0ljZ7QuHeZ7B9Jmxj82GnRFPNWtw5fXkozLKW axmA== X-Forwarded-Encrypted: i=1; AL+hErFjmoV2OjZPth+I3Au+Y9jwlVUaOil9zsuDzX1uwRmYGao5WFIPZ5TUog1RSGzJ8jG5mXvhGRMHX7al@vger.kernel.org X-Gm-Message-State: APuU4Z9xBA5akwfpdzUO2JEHJsSu/2XaxwzoZQkaOmcJRYmAMoPd3R7I gTqAt82plybrwFx5f3rfq+xpFDKdRnG6J3xhQYHYpdvTRUHNEkSJ7mW+HA8FTPgPJr2V X-Gm-Gg: AYBFou0R2HOaZqdq6C/qhdcbnWCEgJpVSeXUd9xHsAav11mhyZeuIl34ETz4e8EDytY Au41I0PVFH5S+6CB/+qOlxVKTES3pGCmeP9i5FC8Si6FgHQHdBmT2ku2xvu6wcIa8KIlpssi5ZC cinc9yFnZusbmtlyzNWAIU4gm3MM11Yabn/V3tTBjamFBAHjYN29/Nxd9gmLwVbUd5GHkEKhPSy fyEzeYDyP7+eQ0qEG1vWKshE3l7ziKkfNtMt41VKKKK7iba/ZPYju8N1IK4FNMGA5maJwK84LJF a/S2MCYNDrQChNA+dsRu1ZDlPie786ZGSNIvP9YhiiwCaMt/C04IBG66PqVw6pBsKzCLu1shpbY cOgHGyyUwlrB5bWs+pripRoM5XmMa0ezBAWeEdEzqP5GPuhh0/D3BOTSb4iN+vyZnL+Zt1HiS5x bPt/W2olKMRTIwNQy8Wm93e7FzMx3+1PTOb8CXADcw2tDmpeYpdCoJEfQ6dB4b9Tm7S1NO4FtPO KiL0pm+4MTLrX4skHD9MqwuRlL+Mk3B9qVAdrd+CT9h2AFP6z4HFfEKCt0NjngPLqvkP1wLHuDx Db7/qu/H9hJAYccAya17ANff3p8CRAFW525qH+Rh2w8h+EAKPEZGCAaTi4VP54k= X-Received: by 2002:a17:907:94cb:b0:c2e:3a72:ffbd with SMTP id a640c23a62f3a-c5096389759mr162937766b.41.1794564336347; Fri, 13 Nov 2026 02:05:36 -0800 (PST) Received: from [10.0.0.233] (tmo-086-54.customers.d1-online.com. [80.187.86.54]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-c5095a5b93csm75365566b.5.2026.11.13.02.05.34 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 13 Nov 2026 02:05:35 -0800 (PST) Message-ID: <8f532a01f6cc2eb73582864343e25be4ec990919.camel@amutable.com> Subject: Re: [PATCH RFC 14/41] debugfs: use fc_init_pseudo() From: Alexander Mikhalitsyn To: Christian Brauner , 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 Date: Fri, 13 Nov 2026 11:05:34 +0100 In-Reply-To: <20261110-work-loop-pseudo-v1-14-4c998976c6c7@kernel.org> References: <20261110-work-loop-pseudo-v1-0-4c998976c6c7@kernel.org> <20261110-work-loop-pseudo-v1-14-4c998976c6c7@kernel.org> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.56.2-0+deb13u1 X-Mailing-List: linux-s390@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 On Tue, 2026-11-10 at 10:14 +0100, Christian Brauner wrote: > Initialize debugfs as a pseudo filesystem. This raises SB_I_PSEUDO > and > also SB_I_NOEXEC and SB_I_NODEV. debugfs never holds executables or > device nodes. >=20 > SB_I_NOEXEC also refuses PROT_EXEC mappings. The debugfs files that > can be mapped, kcov, relay channels and powernv's memtrace, map data. >=20 > Signed-off-by: Christian Brauner (Amutable) Reviewed-by: Alexander Mikhalitsyn > --- > =C2=A0fs/debugfs/inode.c | 2 ++ > =C2=A01 file changed, 2 insertions(+) >=20 > diff --git a/fs/debugfs/inode.c b/fs/debugfs/inode.c > index b4915551ad31..f163f0bc5703 100644 > --- a/fs/debugfs/inode.c > +++ b/fs/debugfs/inode.c > @@ -15,6 +15,7 @@ > =C2=A0#include > =C2=A0#include > =C2=A0#include > +#include > =C2=A0#include > =C2=A0#include > =C2=A0#include > @@ -317,6 +318,7 @@ static int debugfs_init_fs_context(struct > fs_context *fc) > =C2=A0 fsi->mode =3D DEBUGFS_DEFAULT_MODE; > =C2=A0 > =C2=A0 fc->s_fs_info =3D fsi; > + fc_init_pseudo(fc); > =C2=A0 fc->ops =3D &debugfs_context_ops; > =C2=A0 return 0; > =C2=A0}