From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christoph Hellwig Subject: Re: [PATCH v1 11/11] locks: give the blocked_hash its own spinlock Date: Tue, 4 Jun 2013 07:46:40 -0700 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 Return-path: Content-Disposition: inline In-Reply-To: <51ADF789.70906@samba.org> Sender: linux-kernel-owner@vger.kernel.org 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 List-Id: ceph-devel.vger.kernel.org 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. From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christoph Hellwig Date: Tue, 4 Jun 2013 07:46:40 -0700 Subject: [Cluster-devel] [PATCH v1 11/11] locks: give the blocked_hash its own spinlock In-Reply-To: <51ADF789.70906@samba.org> References: <1370056054-25449-1-git-send-email-jlayton@redhat.com> <1370056054-25449-12-git-send-email-jlayton@redhat.com> <51ADF789.70906@samba.org> Message-ID: <20130604144640.GA7730@infradead.org> List-Id: To: cluster-devel.redhat.com MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit 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.