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[80.187.86.54]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-c5095b8651bsm73693366b.78.2026.11.13.02.05.59 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 13 Nov 2026 02:06:01 -0800 (PST) Message-ID: Subject: Re: [PATCH RFC 15/41] tracefs: 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 11:05:59 +0100 In-Reply-To: <20261110-work-loop-pseudo-v1-15-4c998976c6c7@kernel.org> References: <20261110-work-loop-pseudo-v1-0-4c998976c6c7@kernel.org> <20261110-work-loop-pseudo-v1-15-4c998976c6c7@kernel.org> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.56.2-0+deb13u1 X-Archived-By: MIME-Version: 1.0 X-Rspamd-Server: rspam03 X-Rspamd-Queue-Id: B349640009 X-Stat-Signature: 5pfbg388ccf3jwdgmrp3i45wg4tctfx4 X-Rspam-User: X-Spam-Status: No, score=-13.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_PASS,SPF_PASS autolearn=ham autolearn_force=no version=4.0.1 X-HE-Tag: 1794564362-528767 X-HE-Meta: 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 +BozqPIC 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 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 On Tue, 2026-11-10 at 10:14 +0100, Christian Brauner wrote: > Initialize tracefs as a pseudo filesystem. This raises SB_I_PSEUDO > and > also SB_I_NOEXEC and SB_I_NODEV. tracefs never holds executables or > device nodes. >=20 > SB_I_NOEXEC also refuses PROT_EXEC mappings. The only tracefs files > that can be mapped are the ring buffers and __rb_map_vma() refuses > VM_EXEC already. >=20 > Signed-off-by: Christian Brauner (Amutable) Reviewed-by: Alexander Mikhalitsyn > --- > =C2=A0fs/tracefs/inode.c | 2 ++ > =C2=A01 file changed, 2 insertions(+) >=20 > diff --git a/fs/tracefs/inode.c b/fs/tracefs/inode.c > index 5020365ca704..e04febd868eb 100644 > --- a/fs/tracefs/inode.c > +++ b/fs/tracefs/inode.c > @@ -12,6 +12,7 @@ > =C2=A0#include > =C2=A0#include > =C2=A0#include > +#include > =C2=A0#include > =C2=A0#include > =C2=A0#include > @@ -510,6 +511,7 @@ static int tracefs_init_fs_context(struct > fs_context *fc) > =C2=A0 fsi->mode =3D TRACEFS_DEFAULT_MODE; > =C2=A0 > =C2=A0 fc->s_fs_info =3D fsi; > + fc_init_pseudo(fc); > =C2=A0 fc->ops =3D &tracefs_context_ops; > =C2=A0 return 0; > =C2=A0}