From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-qa0-x235.google.com ([2607:f8b0:400d:c00::235]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1YANQS-0001jl-Fx for linux-mtd@lists.infradead.org; Sun, 11 Jan 2015 18:39:49 +0000 Received: by mail-qa0-f53.google.com with SMTP id n4so5325562qaq.12 for ; Sun, 11 Jan 2015 10:39:27 -0800 (PST) Sender: Tejun Heo Date: Sun, 11 Jan 2015 13:39:24 -0500 From: Tejun Heo To: Christoph Hellwig Subject: Re: [PATCH 12/12] fs: remove default_backing_dev_info Message-ID: <20150111183924.GQ25319@htj.dyndns.org> References: <1420739133-27514-1-git-send-email-hch@lst.de> <1420739133-27514-13-git-send-email-hch@lst.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1420739133-27514-13-git-send-email-hch@lst.de> Cc: David Howells , linux-nfs@vger.kernel.org, Jens Axboe , linux-mm@kvack.org, linux-mtd@lists.infradead.org, linux-fsdevel@vger.kernel.org, ceph-devel@vger.kernel.org List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On Thu, Jan 08, 2015 at 06:45:33PM +0100, Christoph Hellwig wrote: > Now that default_backing_dev_info is not used for writeback purposes we can > git rid of it easily: > > - instead of using it's name for tracing unregistered bdi we just use > "unknown" > - btrfs and ceph can just assign the default read ahead window themselves > like several other filesystems already do. > - we can assign noop_backing_dev_info as the default one in alloc_super. > All filesystems already either assigned their own or > noop_backing_dev_info. > > Signed-off-by: Christoph Hellwig Reviewed-by: Tejun Heo Thanks. -- tejun