Return-Path: linux-nfs-owner@vger.kernel.org Received: from bombadil.infradead.org ([198.137.202.9]:34606 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751317Ab3FDPvc (ORCPT ); Tue, 4 Jun 2013 11:51:32 -0400 Date: Tue, 4 Jun 2013 07:46:40 -0700 From: Christoph Hellwig To: "Stefan (metze) Metzmacher" Cc: Jeff Layton , viro@zeniv.linux.org.uk, matthew@wil.cx, bfields@fieldses.org, linux-cifs@vger.kernel.org, linux-nfs@vger.kernel.org, cluster-devel@redhat.com, sage@inktank.com, samba-technical@lists.samba.org, Trond.Myklebust@netapp.com, linux-kernel@vger.kernel.org, linux-afs@lists.infradead.org, dhowells@redhat.com, smfrench@gmail.com, linux-fsdevel@vger.kernel.org, ceph-devel@vger.kernel.org, akpm@linux-foundation.org, swhiteho@redhat.com Subject: Re: [PATCH v1 11/11] locks: give the blocked_hash its own spinlock Message-ID: <20130604144640.GA7730@infradead.org> References: <1370056054-25449-1-git-send-email-jlayton@redhat.com> <1370056054-25449-12-git-send-email-jlayton@redhat.com> <51ADF789.70906@samba.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: <51ADF789.70906@samba.org> Sender: linux-nfs-owner@vger.kernel.org List-ID: Having RCU for modification mostly workloads never is a good idea, so I don't think it makes sense to mention it here. If you care about the overhead it's worth trying to use per-cpu lists, though.