From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pa0-f43.google.com (mail-pa0-f43.google.com [209.85.220.43]) by kanga.kvack.org (Postfix) with ESMTP id 0F0166B0254 for ; Fri, 13 Nov 2015 19:51:49 -0500 (EST) Received: by padhx2 with SMTP id hx2so115349000pad.1 for ; Fri, 13 Nov 2015 16:51:48 -0800 (PST) Received: from mail-pa0-x230.google.com (mail-pa0-x230.google.com. [2607:f8b0:400e:c03::230]) by mx.google.com with ESMTPS id pz7si30857313pab.1.2015.11.13.16.51.48 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 13 Nov 2015 16:51:48 -0800 (PST) Received: by pacej9 with SMTP id ej9so8584907pac.2 for ; Fri, 13 Nov 2015 16:51:48 -0800 (PST) Date: Fri, 13 Nov 2015 16:51:40 -0800 (PST) From: Hugh Dickins Subject: Re: [PATCH] tmpfs: avoid a little creat and stat slowdown In-Reply-To: <8737wafge7.fsf@yhuang-dev.intel.com> Message-ID: References: <87bnbagqa0.fsf@yhuang-dev.intel.com> <8737wafge7.fsf@yhuang-dev.intel.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org List-ID: To: "Huang, Ying" Cc: Hugh Dickins , Andrew Morton , Josef Bacik , Yu Zhao , linux-kernel@vger.kernel.org, linux-mm@kvack.org On Fri, 13 Nov 2015, Huang, Ying wrote: > > c435a390574d is the direct parent of afa2db2fb6f1 in its original git. > 43819159da2b is your patch applied on top of v4.3-rc7. The comparison > of 43819159da2b with v4.3-rc7 is as follow: ... > So you patch improved 11.9% from its base v4.3-rc7. I think other > difference are caused by other changes. Sorry for confusing. Thanks for getting back on this: that's rather what I was hoping to hear. Of course, no user will care which commit is responsible for a slowdown, and we may need to look further; but I couldn't make sense of it before, so this was a relief. Hugh -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org