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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=V7uflGoo; 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 963DD6070300; Wed, 4 Nov 2026 21:13:37 +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=V7uflGoo Received: by smtp.kernel.org (Postfix) with ESMTPSA id 890731F000C1; Wed, 4 Nov 2026 21:13:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1793826817; bh=jcn7jVvcEygiBPhKNySOIoE9F539N91xJ4TgqDQUCP0=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=V7uflGoo2J6W0Pkam2p2NQ2ygDWILS85YrEGrtDhRX9LSpjax7FTdN9yNxg/1nr/F V+6mFIzh3/JJOAXY6DVlJDG4EpV1IqKbiDMaZqe2+mP/VD4uYvDHSHZdC+YPnvDk4p B+fx/mBspdALJuO5S6++QQQg+yaKZfyhFe96p7DkhDOmjrSDCUkzL7D2l6jIRx9hog t02UJbdl2o8LcfstRp/uZbtHAIBJlVxjfK6tVrDPho366mZ6VCIHILqfMZVkkl7EFn VcPqHyjXoZJ1/HnO4R2TW6BDouO7Vr2s8cHixo92YGxXCqi5rLrqQLQrblFCpmhTUC 1HY2L3LLxnrag== 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 09/13] SUNRPC: drop the ioctl of the procfs channel files Date: Wed, 4 Nov 2026 22:13:23 +0100 Message-ID: <20261104-work-procfs-net-v2-9-221e2437fed1@kernel.org> In-Reply-To: <20261104-work-procfs-net-v2-0-221e2437fed1@kernel.org> References: <20261104-work-procfs-net-v2-0-221e2437fed1@kernel.org> X-Mailing-List: linux-debuggers@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=1562; i=brauner@kernel.org; h=from:subject:message-id; bh=I+ev37oI2qOnQB50E4hs4C0vKquyHn0mn+uzhhuE9es=; b=owGbwMvMwCU28Zj0gdSKO4sYT6slMWS97tO7MzO6bl7rnYiJS+98LnRI2rB8SW+2zhcm6VmdL mnzZE2COkpZGMS4GGTFFFkc2k3C5ZbzVGw2ytSAmcPKBDKEgYtTACaimsHIsCL/pkeQ2tMV86Sm GCnwci6xzri2a8OqYh1BgwP67+/djmP4Z6MoeGKi/4+z3/fFeyZzP/p6Min5j4995fEbyvr+l0+ ZMwEA X-Developer-Key: i=brauner@kernel.org; a=openpgp; fpr=4880B8C9BD0E5106FC070F4F7B3C391EFEA93624 Content-Transfer-Encoding: 8bit do_vfs_ioctl() answers FIONREAD for regular files with i_size - f_pos before it gets to the file's ->unlocked_ioctl(). The channel files are regular files, so cache_ioctl_procfs() has never seen FIONREAD and only ever failed other commands with -EINVAL. Drop it. Other commands fail with -ENOTTY now. The rpc_pipefs channel files are regular files as well. Acked-by: Chuck Lever Signed-off-by: Christian Brauner (Amutable) --- net/sunrpc/cache.c | 10 ---------- 1 file changed, 10 deletions(-) diff --git a/net/sunrpc/cache.c b/net/sunrpc/cache.c index 81a3f0068f36..d242b6f33cbc 100644 --- a/net/sunrpc/cache.c +++ b/net/sunrpc/cache.c @@ -1596,15 +1596,6 @@ static __poll_t cache_poll_procfs(struct file *filp, poll_table *wait) return cache_poll(filp, wait, cd); } -static long cache_ioctl_procfs(struct file *filp, - unsigned int cmd, unsigned long arg) -{ - struct inode *inode = file_inode(filp); - struct cache_detail *cd = pde_data(inode); - - return cache_ioctl(inode, filp, cmd, arg, cd); -} - static int cache_open_procfs(struct inode *inode, struct file *filp) { struct cache_detail *cd = pde_data(inode); @@ -1624,7 +1615,6 @@ static const struct proc_ops cache_channel_proc_ops = { .proc_write_buf = cache_write_procfs, .proc_write_size = CACHE_DOWNCALL_MAX, .proc_poll = cache_poll_procfs, - .proc_ioctl = cache_ioctl_procfs, /* for FIONREAD */ .proc_open = cache_open_procfs, .proc_release = cache_release_procfs, }; -- 2.53.0