Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754743Ab0KSO6H (ORCPT ); Fri, 19 Nov 2010 09:58:07 -0500 Received: from bombadil.infradead.org ([18.85.46.34]:50349 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754507Ab0KSO6F (ORCPT ); Fri, 19 Nov 2010 09:58:05 -0500 Date: Fri, 19 Nov 2010 09:57:48 -0500 From: Christoph Hellwig To: Mark Lord Cc: Chris Mason , James Bottomley , Christoph Hellwig , Matthew Wilcox , Josef Bacik , Lukas Czerner , tytso , linux-ext4 , linux-kernel , linux-fsdevel , sandeen Subject: Re: [PATCH 1/2] fs: Do not dispatch FITRIM through separate super_operation Message-ID: <20101119145748.GB27919@infradead.org> References: <1290065809-3976-1-git-send-email-lczerner@redhat.com> <20101118130630.GJ6178@parisc-linux.org> <20101118134804.GN5618@dhcp231-156.rdu.redhat.com> <20101118141957.GK6178@parisc-linux.org> <20101118142918.GA18510@infradead.org> <1290100750.3041.72.camel@mulgrave.site> <4CE59C9E.6050902@teksavvy.com> <1290177488-sup-6540@think> <4CE68F80.7000607@teksavvy.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4CE68F80.7000607@teksavvy.com> User-Agent: Mutt/1.5.21 (2010-09-15) X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 917 Lines: 20 On Fri, Nov 19, 2010 at 09:53:52AM -0500, Mark Lord wrote: > On 10-11-19 09:40 AM, Chris Mason wrote: > > > >We've been told that online and constant trimming is the default in > >windows7. The ssds are most likely to just start ignoring the trims > >they can't service efficiently. > > Win7 collects multiple TRIM ranges over time and batches them as single TRIMs > (as reported to me by an SSD vendor who traced it with a SATA analyzer, > and who also apparently has "inside info"). I really hate to rely on this third party hearsay (from all sides), and have implement TRIM support in qemu now. I'll soon install win7 and will check out the TRIM patters myself. -- 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/