Return-Path: Received: from userp1040.oracle.com ([156.151.31.81]:19543 "EHLO userp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751649AbdFITMi (ORCPT ); Fri, 9 Jun 2017 15:12:38 -0400 Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Mac OS X Mail 9.3 \(3124\)) Subject: Re: [PATCH v2 04/13] xprtrdma: Rename rpcrdma_req::rl_free From: Chuck Lever In-Reply-To: <5332A4D9-ADC4-4DA4-A20E-ACC6019F83BF@oracle.com> Date: Fri, 9 Jun 2017 15:12:33 -0400 Cc: List Linux RDMA Mailing , Linux NFS Mailing List Message-Id: References: <20170608154339.18945.5500.stgit@manet.1015granger.net> <20170608155212.18945.37327.stgit@manet.1015granger.net> <7ee9b1fd-9628-2767-444e-90c6736d63f9@Netapp.com> <5332A4D9-ADC4-4DA4-A20E-ACC6019F83BF@oracle.com> To: Anna Schumaker Sender: linux-nfs-owner@vger.kernel.org List-ID: > On Jun 9, 2017, at 3:03 PM, Chuck Lever wrote: > >> >> On Jun 9, 2017, at 2:58 PM, Anna Schumaker wrote: >> >> Hi Chuck, >> >> On 06/08/2017 11:52 AM, Chuck Lever wrote: >>> Clean up: I'm about to use the rl_free field for purposes other than >>> a free list. So use a more generic name. >>> >>> This is a refactoring change only. >>> >>> BugLink: https://bugzilla.linux-nfs.org/show_bug.cgi?id=305 >>> Fixes: 68791649a725 ('xprtrdma: Invalidate in the RPC reply ... ') >>> Signed-off-by: Chuck Lever >>> --- >>> net/sunrpc/xprtrdma/verbs.c | 9 ++++----- >>> net/sunrpc/xprtrdma/xprt_rdma.h | 2 +- >>> 2 files changed, 5 insertions(+), 6 deletions(-) >>> >>> diff --git a/net/sunrpc/xprtrdma/verbs.c b/net/sunrpc/xprtrdma/verbs.c >>> index a8be66d..df72224 100644 >>> --- a/net/sunrpc/xprtrdma/verbs.c >>> +++ b/net/sunrpc/xprtrdma/verbs.c >>> @@ -971,7 +971,6 @@ struct rpcrdma_req * >>> if (req == NULL) >>> return ERR_PTR(-ENOMEM); >>> >>> - INIT_LIST_HEAD(&req->rl_free); >> >> Does rl_list still need to get initialized somewhere? > > rl_free/rl_list isn't the anchor of a list. It is only > ever a member of a list. So this INIT_LIST_HEAD is actually > unnecessary. Or, put another way: since list_empty() is not used on this field anywhere, it shouldn't be necessary to ensure it is initialized. >> Thanks, >> Anna >> >>> spin_lock(&buffer->rb_reqslock); >>> list_add(&req->rl_all, &buffer->rb_allreqs); >>> spin_unlock(&buffer->rb_reqslock); >>> @@ -1055,7 +1054,7 @@ struct rpcrdma_rep * >>> goto out; >>> } >>> req->rl_backchannel = false; >>> - list_add(&req->rl_free, &buf->rb_send_bufs); >>> + list_add(&req->rl_list, &buf->rb_send_bufs); >>> } >>> >>> INIT_LIST_HEAD(&buf->rb_recv_bufs); >>> @@ -1084,8 +1083,8 @@ struct rpcrdma_rep * >>> struct rpcrdma_req *req; >>> >>> req = list_first_entry(&buf->rb_send_bufs, >>> - struct rpcrdma_req, rl_free); >>> - list_del(&req->rl_free); >>> + struct rpcrdma_req, rl_list); >>> + list_del(&req->rl_list); >>> return req; >>> } >>> >>> @@ -1268,7 +1267,7 @@ struct rpcrdma_req * >>> >>> spin_lock(&buffers->rb_lock); >>> buffers->rb_send_count--; >>> - list_add_tail(&req->rl_free, &buffers->rb_send_bufs); >>> + list_add_tail(&req->rl_list, &buffers->rb_send_bufs); >>> if (rep) { >>> buffers->rb_recv_count--; >>> list_add_tail(&rep->rr_list, &buffers->rb_recv_bufs); >>> diff --git a/net/sunrpc/xprtrdma/xprt_rdma.h b/net/sunrpc/xprtrdma/xprt_rdma.h >>> index 1c23117..ad918c8 100644 >>> --- a/net/sunrpc/xprtrdma/xprt_rdma.h >>> +++ b/net/sunrpc/xprtrdma/xprt_rdma.h >>> @@ -340,7 +340,7 @@ enum { >>> >>> struct rpcrdma_buffer; >>> struct rpcrdma_req { >>> - struct list_head rl_free; >>> + struct list_head rl_list; >>> unsigned int rl_mapped_sges; >>> unsigned int rl_connect_cookie; >>> struct rpcrdma_buffer *rl_buffer; >>> >>> -- >>> To unsubscribe from this list: send the line "unsubscribe linux-nfs" in >>> the body of a message to majordomo@vger.kernel.org >>> More majordomo info at http://vger.kernel.org/majordomo-info.html >>> >> -- >> To unsubscribe from this list: send the line "unsubscribe linux-rdma" in >> the body of a message to majordomo@vger.kernel.org >> More majordomo info at http://vger.kernel.org/majordomo-info.html > > -- > Chuck Lever > > > > -- > To unsubscribe from this list: send the line "unsubscribe linux-nfs" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html -- Chuck Lever