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Received: from willy by casper.infradead.org with local (Exim 4.98.2 #2 (Red Hat Linux)) id 1uU39M-00000006c80-2n5d; Tue, 24 Jun 2025 12:53:20 +0000 Date: Tue, 24 Jun 2025 13:53:20 +0100 From: Matthew Wilcox To: =?utf-8?B?6ZmI5rab5rab?= Taotao Chen Cc: "tytso@mit.edu" , "hch@infradead.org" , "adilger.kernel@dilger.ca" , "brauner@kernel.org" , "jani.nikula@linux.intel.com" , "rodrigo.vivi@intel.com" , "tursulin@ursulin.net" , "airlied@gmail.com" , "linux-fsdevel@vger.kernel.org" , "linux-ext4@vger.kernel.org" , "linux-block@vger.kernel.org" , "intel-gfx@lists.freedesktop.org" , "dri-devel@lists.freedesktop.org" , "linux-mm@kvack.org" , "linux-doc@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "chentao325@qq.com" Subject: Re: [PATCH v2 5/5] ext4: declare support for FOP_DONTCACHE Message-ID: References: <20250624121149.2927-1-chentaotao@didiglobal.com> <20250624121149.2927-6-chentaotao@didiglobal.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20250624121149.2927-6-chentaotao@didiglobal.com> X-Rspamd-Server: rspam12 X-Rspamd-Queue-Id: DF588140012 X-Stat-Signature: mhhst4xef4hkfp7fnzwd4k8pbhhfxu3j X-Rspam-User: X-HE-Tag: 1750770893-322834 X-HE-Meta: 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 LaOg7fDf KORB9tNve5QirxUfPVutSR+4ChOfgewu36VcES07qJuYgqoqgYdtILkYJMziBX4vYb325zM/B4Lzb8IfCGBUnHQihfP85vrbzo5VKkVMCcjqv02pCXA99EtMvof9188xx0OKgDh9nhdrCv74BhZrF+TQaL8QjC0IlvyfyAT7MowlFcxQ4DpXD5OKuiFmD9lffZybn8BulCIheSrO2+6NUCEay3SFKcWBxNnb15TVLp3NaUSH3fDI95jz7OYPzg6AIt+GWFkHUxmBtAoe7PRiQCxEdtNbKXFrMlOd81m7dJ9lKCpLHYbKu1hUl7fChPR8OYaG+KeP0C464H8eBbNiiumKRUWUFjBb2Wx16ad6tCALvuYWi5NiCmRogQ62xX7E8Jah9UB7aDbt4Qhcyjfbw46ObdP98/dpRrK/5NUOqVTU4wUNlpW+10HRUPw2pIuWCZFOtpzYvTvLonftp/KAFNz9q0k2s2gz1cKyw X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Tue, Jun 24, 2025 at 12:12:10PM +0000, 陈涛涛 Taotao Chen wrote: > From: Taotao Chen > > Set the FOP_DONTCACHE flag in ext4_file_operations to indicate that > ext4 supports IOCB_DONTCACHE handling in buffered write paths. I think this patch should be combined with the previous patch so we see all the change needed to support DONTCACHE in one patch.