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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=iqFhZDQ3; 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 1003F606AC25; Wed, 4 Nov 2026 19:50:51 +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=iqFhZDQ3 Received: by smtp.kernel.org (Postfix) with ESMTPSA id AFEC31F00919; Wed, 4 Nov 2026 19:50:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1793821850; bh=PUZ4tW9HsyUaK/ejkkNMI5ANy0GmRkIlRIJ6yNjac0o=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=iqFhZDQ35GfK/vsXy+ylTu3Eh9YrS9nTSq27+28SnBC9XKvW7PfMWDO9W5Ft0iDiC 2su6MPY9k2TxuW2AnVg2vkBoLPH5Ce+Yj7iPgWE1OMfQXuAjt+wKv9ns1AIE6Zh8f2 36rTQxsqFfC8trxeiSZnRnFYf6vYHW9H/wwq7q3bPyDytQtzWderj9LRXTMixQp4Qn iDLkoWDCDGU0TpyQelcs1HXFXKLJrD35LCYzeMiq0HAZIegNRaAkkGVKs79qb+wzhh UnoLohKjRfX7+w2z/A62dlh5PLszggZKXcxYK/t9f4zySuslTWVXxeONmWQtVIKX7q 3JuDh2CyL543w== 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 04/30] lockd: let procfs copy out reads of nlm_end_grace Date: Wed, 4 Nov 2026 20:50:36 +0100 Message-ID: <20261104-work-procfs-fs-v2-4-319e0f9a8aae@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: linux-raid@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=1305; i=brauner@kernel.org; h=from:subject:message-id; bh=yC83pog7S4Eh2+psAQ8qDYZ/OTNKlefl3tGbza44dqI=; b=owGbwMvMwCU28Zj0gdSKO4sYT6slMWS97tFPEq3Pk861Kea+tknP5Pec7S2X9JWOzJkzvcjg8 eGGlXfdOkpZGMS4GGTFFFkc2k3C5ZbzVGw2ytSAmcPKBDKEgYtTACZS/43hr/CRtGIJZ4n01d4b H1v+y1f677Dj1MpcFgcZT/+6tVNuRDEynBQ9vcEl403OpO9xU4NMHs3nFGp3Oh6vtE0lecu7jQH v+AE= X-Developer-Key: i=brauner@kernel.org; a=openpgp; fpr=4880B8C9BD0E5106FC070F4F7B3C391EFEA93624 Content-Transfer-Encoding: 8bit Implement ->proc_read_buf() so procfs copies what is read to userspace after it unpinned the entry. Acked-by: Chuck Lever Signed-off-by: Christian Brauner (Amutable) --- fs/lockd/procfs.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/fs/lockd/procfs.c b/fs/lockd/procfs.c index 852cca8c3588..64195c564cd3 100644 --- a/fs/lockd/procfs.c +++ b/fs/lockd/procfs.c @@ -40,7 +40,7 @@ nlm_end_grace_write(struct file *file, char *buf, size_t size, loff_t *pos) } static ssize_t -nlm_end_grace_read(struct file *file, char __user *buf, size_t size, +nlm_end_grace_read(struct file *file, char *buf, size_t size, loff_t *pos) { struct lockd_net *ln = net_generic(current->nsproxy->net_ns, @@ -51,12 +51,12 @@ nlm_end_grace_read(struct file *file, char __user *buf, size_t size, resp[1] = '\n'; resp[2] = '\0'; - return simple_read_from_buffer(buf, size, pos, resp, sizeof(resp) - 1); + return memory_read_from_buffer(buf, size, pos, resp, sizeof(resp) - 1); } static const struct proc_ops lockd_end_grace_proc_ops = { .proc_write_buf = nlm_end_grace_write, - .proc_read = nlm_end_grace_read, + .proc_read_buf = nlm_end_grace_read, .proc_lseek = default_llseek, }; -- 2.53.0