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Mon, 2 Nov 2026 10:23:55 -0500 (EST) X-Mailer: MessagingEngine.com Webmail Interface X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , Precedence: list X-Archived-By: MIME-Version: 1.0 X-ThreadId: ArOOpyqnvtx- Date: Mon, 02 Nov 2026 10:23:34 -0500 From: "Chuck Lever" To: "Christian Brauner" , linux-fsdevel@vger.kernel.org Cc: "Linus Torvalds" , "Jann Horn" , "Josef Bacik" , "Chris Mason" , "Jeff Layton" , NeilBrown , "Eric Dumazet" , "Thomas Gleixner" , "Alexander 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" , 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 Message-Id: <58f6bc57-d6e2-446f-932a-8104b73cb654@app.fastmail.com> In-Reply-To: <20261102-work-procfs-fs-v1-3-d09a996317b3@kernel.org> References: <20261102-work-procfs-fs-v1-0-d09a996317b3@kernel.org> <20261102-work-procfs-fs-v1-3-d09a996317b3@kernel.org> Subject: Re: [PATCH RFC 03/27] lockd: let procfs copy in writes to nlm_end_grace Content-Type: text/plain Content-Transfer-Encoding: 7bit X-Spam-Status: No, score=-10.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,MAILING_LIST_MULTI,SPF_HELO_PASS,SPF_PASS autolearn=unavailable autolearn_force=no version=4.0.1 X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 On Mon, Nov 2, 2026, at 10:07 AM, Christian Brauner wrote: > Implement ->proc_write_buf() so procfs copies in what is written before > it pins the entry. simple_transaction_get() was only used to get a copy > of what was written, so look at procfs' copy instead and drop the > transaction. A second write to the same file doesn't fail with -EBUSY > anymore. Writes larger than PAGE_SIZE - 1 bytes fail with -EINVAL from > procfs instead of -EFBIG from simple_transaction_get(), which refused a > few bytes less. > > Signed-off-by: Christian Brauner (Amutable) Acked-by: Chuck Lever -- Chuck Lever (Come to NFS bake-a-thon! https://nfsv4bat.org)