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([2600:8802:b00:9ce0:637f:5cdc:9df0:d9ab]) by smtp.gmail.com with ESMTPSA id a92af1059eb24-1217254d369sm56187439c88.16.2025.12.22.21.38.30 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 22 Dec 2025 21:38:30 -0800 (PST) Message-ID: <37febb65-038e-47a7-9a5b-3b4c2773994f@gmail.com> Date: Mon, 22 Dec 2025 21:38:29 -0800 Precedence: bulk X-Mailing-List: linux-unionfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 08/11] fs: add support for non-blocking timestamp updates To: Christoph Hellwig , Christian Brauner Cc: Al Viro , David Sterba , Jan Kara , Mike Marshall , Martin Brandenburg , Carlos Maiolino , Stefan Roesch , Jeff Layton , linux-kernel@vger.kernel.org, linux-btrfs@vger.kernel.org, linux-fsdevel@vger.kernel.org, gfs2@lists.linux.dev, io-uring@vger.kernel.org, devel@lists.orangefs.org, linux-unionfs@vger.kernel.org, linux-mtd@lists.infradead.org, linux-xfs@vger.kernel.org, linux-nfs@vger.kernel.org References: <20251223003756.409543-1-hch@lst.de> <20251223003756.409543-9-hch@lst.de> Content-Language: en-US From: Chaitanya Kulkarni In-Reply-To: <20251223003756.409543-9-hch@lst.de> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 12/22/25 16:37, Christoph Hellwig wrote: > Currently file_update_time_flags unconditionally returns -EAGAIN if any > timestamp needs to be updated and IOCB_NOWAIT is passed. This makes > non-blocking direct writes impossible on file systems with granular > enough timestamps. > > Add a S_NOWAIT to ask for timestamps to not block, and return -EAGAIN in > all methods for now. > > Signed-off-by: Christoph Hellwig > Reviewed-by: Jeff Layton Looks good. Reviewed-by: Chaitanya Kulkarni -ck