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[49.186.4.237]) by smtp.gmail.com with ESMTPSA id d13-20020a170902aa8d00b00198d7b52eefsm3129186plr.257.2023.02.26.15.51.00 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 26 Feb 2023 15:51:00 -0800 (PST) Received: from dave by dread.disaster.area with local (Exim 4.92.3) (envelope-from ) id 1pWQnB-002WaD-LN; Mon, 27 Feb 2023 10:50:57 +1100 Date: Mon, 27 Feb 2023 10:50:57 +1100 From: Dave Chinner To: Shiyang Ruan Cc: linux-xfs@vger.kernel.org, nvdimm@lists.linux.dev, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, djwong@kernel.org, dan.j.williams@intel.com, hch@infradead.org, jane.chu@oracle.com, akpm@linux-foundation.org, willy@infradead.org Subject: Re: [PATCH v10 2/3] fs: introduce super_drop_pagecache() Message-ID: <20230226235057.GY360264@dread.disaster.area> References: <1676645312-13-1-git-send-email-ruansy.fnst@fujitsu.com> <1676645312-13-3-git-send-email-ruansy.fnst@fujitsu.com> <20230220212506.GS360264@dread.disaster.area> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-xfs@vger.kernel.org On Tue, Feb 21, 2023 at 09:57:52AM +0800, Shiyang Ruan wrote: > > > 在 2023/2/21 5:25, Dave Chinner 写道: > > On Fri, Feb 17, 2023 at 02:48:31PM +0000, Shiyang Ruan wrote: > > > xfs_notify_failure.c requires a method to invalidate all dax mappings. > > > drop_pagecache_sb() can do this but it is a static function and only > > > build with CONFIG_SYSCTL. Now, move its implementation into super.c and > > > call it super_drop_pagecache(). Use its second argument as invalidator > > > so that we can choose which invalidate method to use. > > > > > > Signed-off-by: Shiyang Ruan > > > > I got no repsonse last time, so I'll just post a link to the > > concerns I stated about this: > > > > https://lore.kernel.org/linux-xfs/20230205215000.GT360264@dread.disaster.area/ > > Please see patch 3. I changed the code: freeze the fs, then drop its > caches. Neither the patch nor the cover letter have a changelog in them that mention you changed anything. Please, at least, keep a change log in the cover letter so that people know what has changed from version to version without having to look at every patch and line of code again. -Dave. -- Dave Chinner david@fromorbit.com