From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753483AbeE3Oab (ORCPT ); Wed, 30 May 2018 10:30:31 -0400 Received: from mail.kernel.org ([198.145.29.99]:33542 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753373AbeE3Oaa (ORCPT ); Wed, 30 May 2018 10:30:30 -0400 Subject: Re: [f2fs-dev] [PATCH] f2fs: issue discard commands proactively in high fs utilization To: Jaegeuk Kim , linux-kernel@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net References: <20180529205048.39694-1-jaegeuk@kernel.org> From: Chao Yu Message-ID: Date: Wed, 30 May 2018 22:29:58 +0800 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.8.0 MIME-Version: 1.0 In-Reply-To: <20180529205048.39694-1-jaegeuk@kernel.org> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2018/5/30 4:50, Jaegeuk Kim wrote: > In the high utilization like over 80%, we don't expect huge # of large discard > commands, but do many small pending discards which affects FTL GCs a lot. > Let's issue them in that case. > > Signed-off-by: Jaegeuk Kim Reviewed-by: Chao Yu Thanks,