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Thu, 13 Feb 2020 04:39:06 +0000 Received: from localhost.localdomain (c-73-231-172-41.hsd1.ca.comcast.net [73.231.172.41]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 18ED8206D7; Thu, 13 Feb 2020 04:38:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1581568733; bh=bv+0VtaMuMuDtzLYPkieCdmd5QR4JDDM6y220mrx378=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=tbYlCnFj7ggSwK4cyg70rWxQrzUahCW2yOeoE3sZ/LlJjzcrzNUchpk3R5qfHHiaz SHB7larZ7765fztRfvP4xU4fKtp8W2fvEWd3ELQPm1bzbJvc27CPLFeH48zYRK25QU yPUch6WEdYHhO2730Z2ntH6BUkthDgGeRFY+B2E4= Date: Wed, 12 Feb 2020 20:38:52 -0800 From: Andrew Morton To: Matthew Wilcox Message-Id: <20200212203852.8b7e0b28974e41227bd97329@linux-foundation.org> In-Reply-To: <20200125013553.24899-1-willy@infradead.org> References: <20200125013553.24899-1-willy@infradead.org> X-Mailer: Sylpheed 3.5.1 (GTK+ 2.24.31; x86_64-pc-linux-gnu) Mime-Version: 1.0 X-Headers-End: 1j26HD-002cqn-4Z Subject: Re: [f2fs-dev] [PATCH 00/12] Change readahead API X-BeenThere: linux-f2fs-devel@lists.sourceforge.net X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: cluster-devel@redhat.com, linux-kernel@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, linux-xfs@vger.kernel.org, linux-mm@kvack.org, ocfs2-devel@oss.oracle.com, linux-fsdevel@vger.kernel.org, linux-ext4@vger.kernel.org, linux-erofs@lists.ozlabs.org, linux-btrfs@vger.kernel.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: linux-f2fs-devel-bounces@lists.sourceforge.net On Fri, 24 Jan 2020 17:35:41 -0800 Matthew Wilcox wrote: > From: "Matthew Wilcox (Oracle)" > > This series adds a readahead address_space operation to eventually > replace the readpages operation. The key difference is that > pages are added to the page cache as they are allocated (and > then looked up by the filesystem) instead of passing them on a > list to the readpages operation and having the filesystem add > them to the page cache. It's a net reduction in code for each > implementation, more efficient than walking a list, and solves > the direct-write vs buffered-read problem reported by yu kuai at > https://lore.kernel.org/linux-fsdevel/20200116063601.39201-1-yukuai3@huawei.com/ Unclear which patch fixes this and how it did it? _______________________________________________ Linux-f2fs-devel mailing list Linux-f2fs-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel