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smtp.subspace.kernel.org; dkim=pass header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=JrdQsd6G; 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 36D5D6098F70; Wed, 4 Nov 2026 19:55:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=JrdQsd6G Received: by smtp.kernel.org (Postfix) with ESMTPSA id 2BDF51F00A16; Wed, 4 Nov 2026 19:54:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1793822104; bh=R1VqjUGL5+J0t5hj5seZeRe1Maiv3S9hp7Jj5OG0/0s=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=JrdQsd6GTay34FYuGXCa8EK220wd8dcVKmmCUL2H6AN8qybgYu3VWX8QWdUPAcmTQ k7Hh4kIxo+HBWYfqIhyCM4t5TutFpDBfRkmXCuGDnrCDs2kRigWisxosjbx2JTilsl pRLqKsHm9QtEr1md47IXW0nBzRwFYpbJ+AsEXB9Aw5/BASW5ehNYPMEN3WtGHRfiwA OzbZlgAyMFwrKZD+fvajfs9VLVkX7k/jZfqjP/IWM7eHh8GU1TOBliTxs7YYEjoU7C tTvFESzDRyM4Rii2YLzF38phnQomDRBM6gq5STKW4qtXTlnb0Rqa4901faLCQGhySy mMgweD+fFjsdQ== From: Christian Brauner To: linux-fsdevel@vger.kernel.org Cc: Linus Torvalds , Jann Horn , Josef Bacik , Chris Mason , Jeff Layton , NeilBrown , Eric Dumazet , Thomas Gleixner , Al Viro , Jonathan Corbet , Christoph Hellwig , Greg Kroah-Hartman , Joel Granados , Kees Cook , Jan Kara , Jan Kara , linux-kernel@vger.kernel.org, linux-nfs@vger.kernel.org, linux-acpi@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-s390@vger.kernel.org, linux-scsi@vger.kernel.org, linux-um@lists.infradead.org, linux-wireless@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, netdev@vger.kernel.org, ntfs3@lists.linux.dev, platform-driver-x86@vger.kernel.org, coreteam@netfilter.org, kexec@lists.infradead.org, linux-pci@vger.kernel.org, linux-sound@vger.kernel.org, netfilter-devel@vger.kernel.org, dri-devel@lists.freedesktop.org, ibm-acpi-devel@lists.sourceforge.net, jfs-discussion@lists.sourceforge.net, linux-alpha@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-cifs@vger.kernel.org, linux-fbdev@vger.kernel.org, linux-hwmon@vger.kernel.org, linux-mm@kvack.org, linux-sh@vger.kernel.org, linux-usb@vger.kernel.org, samba-technical@lists.samba.org, sparclinux@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-doc@vger.kernel.org, linux-serial@vger.kernel.org, linux-atm-general@lists.sourceforge.net, Takashi Iwai , linux-input@vger.kernel.org, linux-raid@vger.kernel.org, linux-ext4@vger.kernel.org, linux-modules@vger.kernel.org, linux-debuggers@vger.kernel.org, "Christian Brauner (Amutable)" , Chuck Lever Subject: [PATCH RESEND v2 21/30] kallsyms: let procfs own the seq_file of /proc/kallsyms Date: Wed, 4 Nov 2026 20:54:49 +0100 Message-ID: <20261104-work-procfs-fs-v2-21-319e0f9a8aae@kernel.org> In-Reply-To: <20261104-work-procfs-fs-v2-0-319e0f9a8aae@kernel.org> References: <20261104-work-procfs-fs-v2-0-319e0f9a8aae@kernel.org> X-Mailing-List: netdev@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" X-Mailer: b4 0.17-dev X-Developer-Signature: v=1; a=openpgp-sha256; l=1331; i=brauner@kernel.org; h=from:subject:message-id; bh=X1hXUo+P6dAEkQI4HVxBka/iuP3neD063cymPGxvXEU=; b=owGbwMvMwCU28Zj0gdSKO4sYT6slMWS97nH59Orc+7n3eLifScgo8Jj8qyzNWnT19Mol2qc4a 58vWjHboqOUhUGMi0FWTJHFod0kXG45T8Vmo0wNmDmsTCBDGLg4BWAiPWcZ/nCKtL2fd32F2F95 vx9SGZf0t36r5ma6o/N8y3elH9e2NU1l+F8fo55wKcT3fXtS7NoKxUWhugwWHOV/0+b/kah+n3N uBjcA X-Developer-Key: i=brauner@kernel.org; a=openpgp; fpr=4880B8C9BD0E5106FC070F4F7B3C391EFEA93624 Content-Transfer-Encoding: 8bit Declare the seq_operations and the size of the iterator and let procfs open and free the seq_file. ->proc_open() only initializes the iterator now. Signed-off-by: Christian Brauner (Amutable) --- kernel/kallsyms.c | 12 +++++------- 1 file changed, 5 insertions(+), 7 deletions(-) diff --git a/kernel/kallsyms.c b/kernel/kallsyms.c index aec2f06858af..2d309fcee730 100644 --- a/kernel/kallsyms.c +++ b/kernel/kallsyms.c @@ -888,10 +888,9 @@ static int kallsyms_open(struct inode *inode, struct file *file) * s_start from where we left off, so we avoid doing * using get_symbol_offset for every symbol. */ - struct kallsym_iter *iter; - iter = __seq_open_private(file, &kallsyms_op, sizeof(*iter)); - if (!iter) - return -ENOMEM; + struct seq_file *m = file->private_data; + struct kallsym_iter *iter = m->private; + reset_iter(iter, 0); /* @@ -923,10 +922,9 @@ const char *kdb_walk_kallsyms(loff_t *pos) #endif /* CONFIG_KGDB_KDB */ static const struct proc_ops kallsyms_proc_ops = { + .proc_seq_ops = &kallsyms_op, + .proc_state_size = sizeof(struct kallsym_iter), .proc_open = kallsyms_open, - .proc_read = seq_read, - .proc_lseek = seq_lseek, - .proc_release = seq_release_private, }; static int __init kallsyms_init(void) -- 2.53.0