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=1793631780; b=Hk01LjaWW5YEr+/Qcuzs/EsC/GuAeXRiG4zRc8Aot/ygvdhiqEEiCMomkZVcNlFKea1U u4ZI1tF+7vKeP3UpQMdlZils82RMGsT5Ln7ChU9ZCIZIwZlDIvvzQjU/tMRqygXLDx7oh K/kIB4VpSjk7osHiO9N0E2ZYX6AWTWzj1ZPlERjY0YcWONMeviNMqrQ2mPLjGPzzERiz3 TbuiWwbqC0e5I+TBMVrwy6dNyVg8ZgIrkZojgG+efTozBCGUL+FNKoHpP38eb++L7fM6A zXuUNIdksg75rF6/bYo9nPfbNzlBYtj6tjGJHNWeQKb3fylMdR0TDD9MsZttr06nQgA== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793631780; h=Received:DKIM-Signature:From:Date:Subject:MIME-Version:Content-Type: Content-Transfer-Encoding:Message-Id:References:In-Reply-To:To:Cc: X-Mailer; bh=wEPnWAoxjJOkMqmLZaf/U9t0SZ8y5Jr9Z0MZeAu0+Kc=; b=zhqhdv11t00JNa9yeqrduzFuLmE0789iYHWg0gNqhq21/d35THpK/J6PkFP97WE5RkXV SUopoHpza2wchNgxCswFaRi6Obkbw4fTDsFFEc/Ls0Gpd0EwWzzntmH3lSmxHrcfepEzO fqM6h/W2HNKj40sA3Vy7hGBeBs1nxp6RIJzqMADN8jAlb3Sq6fwzvE0T/rE5IOhEa5pcu Tn2JI2SlInPoPtE3SgqyXWJ1fC7Nro/tOwMctWNXG703SVnWDuyH6pjIXS4j556QQ0jiu 9W2l3xRd78wRXZ9vZn/Ky0yHlleuuAAhyyelN/Utqvhe2NwnfvaxT0AlIzbXF4MaMXQ== 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=Ht8IvPAW; 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 1D8E76085554; Mon, 2 Nov 2026 15:02:59 +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=Ht8IvPAW Received: by smtp.kernel.org (Postfix) with ESMTPSA id 993D81F00A1C; Mon, 2 Nov 2026 15:02:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1793631779; bh=wEPnWAoxjJOkMqmLZaf/U9t0SZ8y5Jr9Z0MZeAu0+Kc=; h=From:Date:Subject:References:In-Reply-To:To:Cc; b=Ht8IvPAW4mof6T3nGFwGbeVcaglGOl5mlj1CVqepMvEvFGz+8PKgoWLHL9+bJs9L7 53v2AQN+tBMkiLzgkeml7gGU+OB8Qm2CYhl3PTcPVXGN5OADSQkZJx/YRkKTS8i052 B5XpuKPR4lfAkar6kmgYTuxdr92sz56IZFvIKuF1+wppZQEyaU5GTMiW0VyOvuqR23 IRN/l76vPa7aqwWxy1j21njn6oagnIsGH3fmLYqTV/WDWTC2VC/h/xgzC3mEcucqJ4 Ga/T8yFZ4NOj4fhKsZdAeiJjq2g3w2I4SHbAhfhyRvJrP9tLFJXFNtfFbKv/jX0P31 EU9eTVpIjSIzQ== From: Christian Brauner Date: Mon, 02 Nov 2026 16:01:31 +0100 Subject: [PATCH RFC 04/22] m68k/bootinfo: let procfs copy out reads of /proc/bootinfo 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" Content-Transfer-Encoding: 7bit Message-Id: <20261102-work-procfs-arch-v1-4-c9492ab08480@kernel.org> References: <20261102-work-procfs-arch-v1-0-c9492ab08480@kernel.org> In-Reply-To: <20261102-work-procfs-arch-v1-0-c9492ab08480@kernel.org> 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 X-Mailer: b4 0.17-dev Implement ->proc_read_buf() so procfs copies what is read to userspace after it unpinned the entry. Signed-off-by: Christian Brauner (Amutable) --- arch/m68k/kernel/bootinfo_proc.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/arch/m68k/kernel/bootinfo_proc.c b/arch/m68k/kernel/bootinfo_proc.c index 857fa2aaa748..4936cf44e86a 100644 --- a/arch/m68k/kernel/bootinfo_proc.c +++ b/arch/m68k/kernel/bootinfo_proc.c @@ -19,15 +19,15 @@ static char bootinfo_tmp[1536] __initdata; static void *bootinfo_copy; static size_t bootinfo_size; -static ssize_t bootinfo_read(struct file *file, char __user *buf, +static ssize_t bootinfo_read(struct file *file, char *buf, size_t count, loff_t *ppos) { - return simple_read_from_buffer(buf, count, ppos, bootinfo_copy, + return memory_read_from_buffer(buf, count, ppos, bootinfo_copy, bootinfo_size); } static const struct proc_ops bootinfo_proc_ops = { - .proc_read = bootinfo_read, + .proc_read_buf = bootinfo_read, .proc_lseek = default_llseek, }; -- 2.53.0