Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933030Ab1EJQ3c (ORCPT ); Tue, 10 May 2011 12:29:32 -0400 Received: from mail.parknet.co.jp ([210.171.160.6]:38419 "EHLO mail.parknet.co.jp" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932727Ab1EJQ3b (ORCPT ); Tue, 10 May 2011 12:29:31 -0400 From: OGAWA Hirofumi To: Jan Kara Cc: Christoph Hellwig , "Darrick J. Wong" , Theodore Tso , Alexander Viro , Jens Axboe , "Martin K. Petersen" , Jeff Layton , Dave Chinner , linux-kernel , Dave Hansen , linux-mm@kvack.org, Chris Mason , Joel Becker , linux-scsi , linux-fsdevel , linux-ext4@vger.kernel.org, Mingming Cao Subject: Re: [PATCHSET v3.1 0/7] data integrity: Stabilize pages during writeback for various fses References: <20110509230318.19566.66202.stgit@elm3c44.beaverton.ibm.com> <87tyd31fkc.fsf@devron.myhome.or.jp> <20110510133603.GA5823@infradead.org> <874o524q9h.fsf@devron.myhome.or.jp> <20110510144939.GI4402@quack.suse.cz> <87aaeur31x.fsf@devron.myhome.or.jp> <20110510161836.GL4402@quack.suse.cz> Date: Wed, 11 May 2011 01:29:28 +0900 In-Reply-To: <20110510161836.GL4402@quack.suse.cz> (Jan Kara's message of "Tue, 10 May 2011 18:18:36 +0200") Message-ID: <87r586plhz.fsf@devron.myhome.or.jp> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.0.50 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 869 Lines: 22 Jan Kara writes: > On Wed 11-05-11 00:24:58, OGAWA Hirofumi wrote: >> Jan Kara writes: >> >> >> Isn't it reallocated blocks too, and metadata too? >> > Reallocated blocks - not really. For a block to be freed it cannot be >> > under writeback and when it's freed no writeback is started. >> >> Sure for data -> data reallocated case. metadata -> data/metadata is >> still there. > Unless you properly use bforget() (which you should I think). But I have > not really checked this in detail for a while. bforget() doesn't wait IO, right? -- OGAWA Hirofumi -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/