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[80.187.86.54]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-c5095b23b3asm74752966b.27.2026.11.13.02.03.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 13 Nov 2026 02:03:40 -0800 (PST) Message-ID: Subject: Re: [PATCH RFC 09/41] bpf: use fc_init_pseudo() for bpffs 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 11:03:39 +0100 In-Reply-To: <20261110-work-loop-pseudo-v1-9-4c998976c6c7@kernel.org> References: <20261110-work-loop-pseudo-v1-0-4c998976c6c7@kernel.org> <20261110-work-loop-pseudo-v1-9-4c998976c6c7@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: rspam06 X-Stat-Signature: u3n9fnd7bb81h4ftdw8ktqpn7cgyfrix 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-Rspamd-Queue-Id: 83F3C180005 X-Rspam-User: X-HE-Tag: 1794564222-703946 X-HE-Meta: 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 ZXXCNlc1 iEpVOx5QdTlvTMxL5eBlq1SfXsRLSe1vlUK9bjJtd2yKS4iXveBcwuDSOs+vsTIPNkgESvnbHeoilwcC9Mjk1/5XzKUX4GDFNBBb3/VMj/lVgq4/kGkJge30t3vZuqo4afpW96WLd1c2wKdaj8ErgNCM5yeNXmt4k5rU0M2I34giNrMnzqUDqEEH3ATgTAU6w2/3SxweahdMsP1gUnNciDhcsq3+Ou6r2K5dJWsv0xUZI0d4C05sNHMiuacF4D8g4ZBs+aA4AhMl52giDYajwJ4M2JN4VsqU/K2ku7pln5DpZPn6p4Oq0dpIDd0S0XQbesKEl4iULbORevYM3WQ/2xHuUjSNuyciZzIbWradnNrXnLt3DUguVZiaEa4zy4QbPRz4pPh4R14X43qfMBe4p5prNi1VknXnEPRQ9SwWBoIw0XZopLebRCAWe9f3GrcyyfpL9mEjYGeO1RtJ26UgzP/iOe/ItS9L/KQ9Ne9VOXCxdFv0p1tvn6DBMsg== 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 bpffs as a pseudo filesystem instead of raising > SB_I_NOEXEC and SB_I_NODEV by hand. This adds SB_I_PSEUDO. >=20 > Signed-off-by: Christian Brauner (Amutable) Reviewed-by: Alexander Mikhalitsyn > --- > =C2=A0kernel/bpf/inode.c | 4 ++-- > =C2=A01 file changed, 2 insertions(+), 2 deletions(-) >=20 > diff --git a/kernel/bpf/inode.c b/kernel/bpf/inode.c > index c6f328e4752e..57cf3775c076 100644 > --- a/kernel/bpf/inode.c > +++ b/kernel/bpf/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 > @@ -1197,8 +1198,6 @@ static int bpf_fill_super(struct super_block > *sb, struct fs_context *fc) > =C2=A0 sb->s_magic =3D BPF_FS_MAGIC; > =C2=A0 sb->s_op =3D &bpf_super_ops; > =C2=A0 sb->s_xattr =3D bpf_fs_xattr_handlers; > - sb->s_iflags |=3D SB_I_NOEXEC; > - sb->s_iflags |=3D SB_I_NODEV; > =C2=A0 sb->s_time_gran =3D 1; > =C2=A0 > =C2=A0 inode =3D bpf_get_inode(sb, NULL, S_IFDIR | 0777); > @@ -1261,6 +1260,7 @@ static int bpf_init_fs_context(struct > fs_context *fc) > =C2=A0 opts->delegate_attachs =3D 0; > =C2=A0 > =C2=A0 fc->s_fs_info =3D opts; > + fc_init_pseudo(fc); > =C2=A0 fc->ops =3D &bpf_context_ops; > =C2=A0 return 0; > =C2=A0}