Return-Path: linux-nfs-owner@vger.kernel.org Received: from mail-ie0-f180.google.com ([209.85.223.180]:55954 "EHLO mail-ie0-f180.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753620AbbAMQ0m (ORCPT ); Tue, 13 Jan 2015 11:26:42 -0500 Subject: [PATCH v2 14/20] xprtrdma: Refactor rpcrdma_buffer_create() and rpcrdma_buffer_destroy() From: Chuck Lever To: linux-rdma@vger.kernel.org, linux-nfs@vger.kernel.org Date: Tue, 13 Jan 2015 11:26:39 -0500 Message-ID: <20150113162639.14086.51981.stgit@manet.1015granger.net> In-Reply-To: <20150113161440.14086.24801.stgit@manet.1015granger.net> References: <20150113161440.14086.24801.stgit@manet.1015granger.net> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Sender: linux-nfs-owner@vger.kernel.org List-ID: Move the details of how to create and destroy rpcrdma_req and rpcrdma_rep structures into helper functions. Signed-off-by: Chuck Lever --- net/sunrpc/xprtrdma/verbs.c | 148 ++++++++++++++++++++++++++++--------------- 1 file changed, 95 insertions(+), 53 deletions(-) diff --git a/net/sunrpc/xprtrdma/verbs.c b/net/sunrpc/xprtrdma/verbs.c index fd71501..24ea6dd 100644 --- a/net/sunrpc/xprtrdma/verbs.c +++ b/net/sunrpc/xprtrdma/verbs.c @@ -1075,6 +1075,69 @@ rpcrdma_ep_disconnect(struct rpcrdma_ep *ep, struct rpcrdma_ia *ia) } } +static struct rpcrdma_req * +rpcrdma_create_req(struct rpcrdma_xprt *r_xprt) +{ + struct rpcrdma_create_data_internal *cdata = &r_xprt->rx_data; + size_t wlen = 1 << fls(cdata->inline_wsize + + sizeof(struct rpcrdma_req)); + struct rpcrdma_ia *ia = &r_xprt->rx_ia; + struct rpcrdma_req *req; + int rc; + + rc = -ENOMEM; + req = kmalloc(wlen, GFP_KERNEL); + if (req == NULL) + goto out; + memset(req, 0, sizeof(struct rpcrdma_req)); + + rc = rpcrdma_register_internal(ia, req->rl_base, wlen - + offsetof(struct rpcrdma_req, rl_base), + &req->rl_handle, &req->rl_iov); + if (rc) + goto out_free; + + req->rl_size = wlen - sizeof(struct rpcrdma_req); + req->rl_buffer = &r_xprt->rx_buf; + return req; + +out_free: + kfree(req); +out: + return ERR_PTR(rc); +} + +static struct rpcrdma_rep * +rpcrdma_create_rep(struct rpcrdma_xprt *r_xprt) +{ + struct rpcrdma_create_data_internal *cdata = &r_xprt->rx_data; + size_t rlen = 1 << fls(cdata->inline_rsize + + sizeof(struct rpcrdma_rep)); + struct rpcrdma_ia *ia = &r_xprt->rx_ia; + struct rpcrdma_rep *rep; + int rc; + + rc = -ENOMEM; + rep = kmalloc(rlen, GFP_KERNEL); + if (rep == NULL) + goto out; + memset(rep, 0, sizeof(struct rpcrdma_rep)); + + rc = rpcrdma_register_internal(ia, rep->rr_base, rlen - + offsetof(struct rpcrdma_rep, rr_base), + &rep->rr_handle, &rep->rr_iov); + if (rc) + goto out_free; + + rep->rr_buffer = &r_xprt->rx_buf; + return rep; + +out_free: + kfree(rep); +out: + return ERR_PTR(rc); +} + static int rpcrdma_init_fmrs(struct rpcrdma_ia *ia, struct rpcrdma_buffer *buf) { @@ -1167,7 +1230,7 @@ rpcrdma_buffer_create(struct rpcrdma_xprt *r_xprt) struct rpcrdma_ia *ia = &r_xprt->rx_ia; struct rpcrdma_create_data_internal *cdata = &r_xprt->rx_data; char *p; - size_t len, rlen, wlen; + size_t len; int i, rc; buf->rb_max_requests = cdata->max_requests; @@ -1227,62 +1290,29 @@ rpcrdma_buffer_create(struct rpcrdma_xprt *r_xprt) break; } - /* - * Allocate/init the request/reply buffers. Doing this - * using kmalloc for now -- one for each buf. - */ - wlen = 1 << fls(cdata->inline_wsize + sizeof(struct rpcrdma_req)); - rlen = 1 << fls(cdata->inline_rsize + sizeof(struct rpcrdma_rep)); - dprintk("RPC: %s: wlen = %zu, rlen = %zu\n", - __func__, wlen, rlen); - for (i = 0; i < buf->rb_max_requests; i++) { struct rpcrdma_req *req; struct rpcrdma_rep *rep; - req = kmalloc(wlen, GFP_KERNEL); - if (req == NULL) { + req = rpcrdma_create_req(r_xprt); + if (IS_ERR(req)) { dprintk("RPC: %s: request buffer %d alloc" " failed\n", __func__, i); - rc = -ENOMEM; + rc = PTR_ERR(req); goto out; } - memset(req, 0, sizeof(struct rpcrdma_req)); buf->rb_send_bufs[i] = req; - buf->rb_send_bufs[i]->rl_buffer = buf; - - rc = rpcrdma_register_internal(ia, req->rl_base, - wlen - offsetof(struct rpcrdma_req, rl_base), - &buf->rb_send_bufs[i]->rl_handle, - &buf->rb_send_bufs[i]->rl_iov); - if (rc) - goto out; - buf->rb_send_bufs[i]->rl_size = wlen - - sizeof(struct rpcrdma_req); - - rep = kmalloc(rlen, GFP_KERNEL); - if (rep == NULL) { + rep = rpcrdma_create_rep(r_xprt); + if (IS_ERR(rep)) { dprintk("RPC: %s: reply buffer %d alloc failed\n", __func__, i); - rc = -ENOMEM; + rc = PTR_ERR(rep); goto out; } - memset(rep, 0, sizeof(struct rpcrdma_rep)); buf->rb_recv_bufs[i] = rep; - buf->rb_recv_bufs[i]->rr_buffer = buf; - - rc = rpcrdma_register_internal(ia, rep->rr_base, - rlen - offsetof(struct rpcrdma_rep, rr_base), - &buf->rb_recv_bufs[i]->rr_handle, - &buf->rb_recv_bufs[i]->rr_iov); - if (rc) - goto out; - } - dprintk("RPC: %s: max_requests %d\n", - __func__, buf->rb_max_requests); - /* done */ + return 0; out: rpcrdma_buffer_destroy(buf); @@ -1290,6 +1320,26 @@ out: } static void +rpcrdma_destroy_rep(struct rpcrdma_ia *ia, struct rpcrdma_rep *rep) +{ + if (!rep) + return; + + rpcrdma_deregister_internal(ia, rep->rr_handle, &rep->rr_iov); + kfree(rep); +} + +static void +rpcrdma_destroy_req(struct rpcrdma_ia *ia, struct rpcrdma_req *req) +{ + if (!req) + return; + + rpcrdma_deregister_internal(ia, req->rl_handle, &req->rl_iov); + kfree(req); +} + +static void rpcrdma_destroy_fmrs(struct rpcrdma_buffer *buf) { struct rpcrdma_mw *r; @@ -1344,18 +1394,10 @@ rpcrdma_buffer_destroy(struct rpcrdma_buffer *buf) dprintk("RPC: %s: entering\n", __func__); for (i = 0; i < buf->rb_max_requests; i++) { - if (buf->rb_recv_bufs && buf->rb_recv_bufs[i]) { - rpcrdma_deregister_internal(ia, - buf->rb_recv_bufs[i]->rr_handle, - &buf->rb_recv_bufs[i]->rr_iov); - kfree(buf->rb_recv_bufs[i]); - } - if (buf->rb_send_bufs && buf->rb_send_bufs[i]) { - rpcrdma_deregister_internal(ia, - buf->rb_send_bufs[i]->rl_handle, - &buf->rb_send_bufs[i]->rl_iov); - kfree(buf->rb_send_bufs[i]); - } + if (buf->rb_recv_bufs) + rpcrdma_destroy_rep(ia, buf->rb_recv_bufs[i]); + if (buf->rb_send_bufs) + rpcrdma_destroy_req(ia, buf->rb_send_bufs[i]); } switch (ia->ri_memreg_strategy) {