Return-Path: Received: from bombadil.infradead.org ([198.137.202.9]:40701 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752183AbcFOHQG (ORCPT ); Wed, 15 Jun 2016 03:16:06 -0400 Date: Wed, 15 Jun 2016 00:16:05 -0700 From: Christoph Hellwig To: Trond Myklebust Cc: linux-nfs@vger.kernel.org Subject: Re: [PATCH 11/12] NFS: Don't count O_DIRECT reads in the inode->i_dio_count Message-ID: <20160615071605.GD4318@infradead.org> References: <1465931115-30784-2-git-send-email-trond.myklebust@primarydata.com> <1465931115-30784-3-git-send-email-trond.myklebust@primarydata.com> <1465931115-30784-4-git-send-email-trond.myklebust@primarydata.com> <1465931115-30784-5-git-send-email-trond.myklebust@primarydata.com> <1465931115-30784-6-git-send-email-trond.myklebust@primarydata.com> <1465931115-30784-7-git-send-email-trond.myklebust@primarydata.com> <1465931115-30784-8-git-send-email-trond.myklebust@primarydata.com> <1465931115-30784-9-git-send-email-trond.myklebust@primarydata.com> <1465931115-30784-10-git-send-email-trond.myklebust@primarydata.com> <1465931115-30784-11-git-send-email-trond.myklebust@primarydata.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: <1465931115-30784-11-git-send-email-trond.myklebust@primarydata.com> Sender: linux-nfs-owner@vger.kernel.org List-ID: Explanation of why reads are more special than writes here or in general why they are safe?