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charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20261102-work-procfs-fs-v1-4-d09a996317b3@kernel.org> References: <20261102-work-procfs-fs-v1-0-d09a996317b3@kernel.org> In-Reply-To: <20261102-work-procfs-fs-v1-0-d09a996317b3@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 X-Developer-Signature: v=1; a=openpgp-sha256; l=1257; i=brauner@kernel.org; h=from:subject:message-id; bh=eZ2kMMEIgx0JCcy46KFAm+0lqPvZbTWW97pZVUITElw=; b=owGbwMvMwCU28Zj0gdSKO4sYT6slMWS9WG74O2799hNsR6IfK5pKSQjHJsw/YPHc0p7/jSlHm OeZhvliHaUsDGJcDLJiiiwO7Sbhcst5KjYbZWrAzGFlAhnCwMUpABPZ/ImR4eZSzSvCL/kZRC1V N2gkpD259yrLxz9novylvNjbUvvXtzEyLO2o59UOLix8XXD14rToR6HSd+5s+1rF8C/DcQqPudp iTgA= X-Developer-Key: i=brauner@kernel.org; a=openpgp; fpr=4880B8C9BD0E5106FC070F4F7B3C391EFEA93624 Implement ->proc_read_buf() so procfs copies what is read to userspace after it unpinned the entry. 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 47949bec7a09..34a7c3705bb6 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)); + return memory_read_from_buffer(buf, size, pos, resp, sizeof(resp)); } 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