From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751067AbdAWN6A (ORCPT ); Mon, 23 Jan 2017 08:58:00 -0500 Received: from mail-pg0-f65.google.com ([74.125.83.65]:35155 "EHLO mail-pg0-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750703AbdAWN57 (ORCPT ); Mon, 23 Jan 2017 08:57:59 -0500 Date: Mon, 23 Jan 2017 22:57:24 +0900 From: Sergey Senozhatsky To: Minchan Kim Cc: Andrew Morton , Sergey Senozhatsky , linux-kernel@vger.kernel.org Subject: Re: [PATCH] zram: remove waitqueue for IO done Message-ID: <20170123135724.GA438@tigerII.localdomain> References: <1485145031-11661-1-git-send-email-minchan@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1485145031-11661-1-git-send-email-minchan@kernel.org> User-Agent: Mutt/1.7.2 (2016-11-26) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On (01/23/17 13:17), Minchan Kim wrote: > zram_reset_device waits ongoing writepage pages completed by > zram->refcount logic. However, it's pointless because before > the reset, we prevent further opening of zram by zram->claim > and flush all of pending IO by fsync_bdev so there should be > no pending IO at the zram_reset_device. interesting. looks reasonable to me. > Signed-off-by: Minchan Kim Reviewed-by: Sergey Senozhatsky -ss