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authorChuck Lever <chuck.lever@oracle.com>2019-04-24 16:39:05 +0300
committerAnna Schumaker <Anna.Schumaker@Netapp.com>2019-04-25 21:59:44 +0300
commit1769e6a816dff50d960271eb780e0a40b739b256 (patch)
tree29acca4325742d88b61dd531b88567709e1def05 /net/sunrpc
parentb2ca473b920dfbaad7c4f9eb5043258ef71f321f (diff)
downloadlinux-1769e6a816dff50d960271eb780e0a40b739b256.tar.xz
xprtrdma: Clean up rpcrdma_create_req()
Eventually, I'd like to invoke rpcrdma_create_req() during the call_reserve step. Memory allocation there probably needs to use GFP_NOIO. Therefore a set of GFP flags needs to be passed in. As an additional clean up, just return a pointer or NULL, because the only error return code here is -ENOMEM. Lastly, clean up the function names to be consistent with the pattern: "rpcrdma" _ object-type _ action Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Diffstat (limited to 'net/sunrpc')
-rw-r--r--net/sunrpc/xprtrdma/backchannel.c6
-rw-r--r--net/sunrpc/xprtrdma/verbs.c29
-rw-r--r--net/sunrpc/xprtrdma/xprt_rdma.h3
3 files changed, 21 insertions, 17 deletions
diff --git a/net/sunrpc/xprtrdma/backchannel.c b/net/sunrpc/xprtrdma/backchannel.c
index d79b18c1f4cd..713961a63c49 100644
--- a/net/sunrpc/xprtrdma/backchannel.c
+++ b/net/sunrpc/xprtrdma/backchannel.c
@@ -31,9 +31,9 @@ static int rpcrdma_bc_setup_reqs(struct rpcrdma_xprt *r_xprt,
struct rpcrdma_regbuf *rb;
size_t size;
- req = rpcrdma_create_req(r_xprt);
- if (IS_ERR(req))
- return PTR_ERR(req);
+ req = rpcrdma_req_create(r_xprt, GFP_KERNEL);
+ if (!req)
+ return -ENOMEM;
rqst = &req->rl_slot;
rqst->rq_xprt = xprt;
diff --git a/net/sunrpc/xprtrdma/verbs.c b/net/sunrpc/xprtrdma/verbs.c
index 30cfc0efe699..71fc41f9a8eb 100644
--- a/net/sunrpc/xprtrdma/verbs.c
+++ b/net/sunrpc/xprtrdma/verbs.c
@@ -996,22 +996,27 @@ rpcrdma_mr_refresh_worker(struct work_struct *work)
rpcrdma_mrs_create(r_xprt);
}
-struct rpcrdma_req *
-rpcrdma_create_req(struct rpcrdma_xprt *r_xprt)
+/**
+ * rpcrdma_req_create - Allocate an rpcrdma_req object
+ * @r_xprt: controlling r_xprt
+ * @flags: GFP flags passed to memory allocators
+ *
+ * Returns an allocated and fully initialized rpcrdma_req or NULL.
+ */
+struct rpcrdma_req *rpcrdma_req_create(struct rpcrdma_xprt *r_xprt, gfp_t flags)
{
struct rpcrdma_buffer *buffer = &r_xprt->rx_buf;
struct rpcrdma_regbuf *rb;
struct rpcrdma_req *req;
- req = kzalloc(sizeof(*req), GFP_KERNEL);
+ req = kzalloc(sizeof(*req), flags);
if (req == NULL)
- return ERR_PTR(-ENOMEM);
+ return NULL;
- rb = rpcrdma_alloc_regbuf(RPCRDMA_HDRBUF_SIZE,
- DMA_TO_DEVICE, GFP_KERNEL);
+ rb = rpcrdma_alloc_regbuf(RPCRDMA_HDRBUF_SIZE, DMA_TO_DEVICE, flags);
if (IS_ERR(rb)) {
kfree(req);
- return ERR_PTR(-ENOMEM);
+ return NULL;
}
req->rl_rdmabuf = rb;
xdr_buf_init(&req->rl_hdrbuf, rb->rg_base, rdmab_length(rb));
@@ -1086,16 +1091,14 @@ rpcrdma_buffer_create(struct rpcrdma_xprt *r_xprt)
INIT_LIST_HEAD(&buf->rb_send_bufs);
INIT_LIST_HEAD(&buf->rb_allreqs);
+
+ rc = -ENOMEM;
for (i = 0; i < buf->rb_max_requests; i++) {
struct rpcrdma_req *req;
- req = rpcrdma_create_req(r_xprt);
- if (IS_ERR(req)) {
- dprintk("RPC: %s: request buffer %d alloc"
- " failed\n", __func__, i);
- rc = PTR_ERR(req);
+ req = rpcrdma_req_create(r_xprt, GFP_KERNEL);
+ if (!req)
goto out;
- }
list_add(&req->rl_list, &buf->rb_send_bufs);
}
diff --git a/net/sunrpc/xprtrdma/xprt_rdma.h b/net/sunrpc/xprtrdma/xprt_rdma.h
index 10f6593e1a6a..539558fc9c62 100644
--- a/net/sunrpc/xprtrdma/xprt_rdma.h
+++ b/net/sunrpc/xprtrdma/xprt_rdma.h
@@ -528,7 +528,8 @@ int rpcrdma_ep_post(struct rpcrdma_ia *, struct rpcrdma_ep *,
/*
* Buffer calls - xprtrdma/verbs.c
*/
-struct rpcrdma_req *rpcrdma_create_req(struct rpcrdma_xprt *);
+struct rpcrdma_req *rpcrdma_req_create(struct rpcrdma_xprt *r_xprt,
+ gfp_t flags);
void rpcrdma_req_destroy(struct rpcrdma_req *req);
int rpcrdma_buffer_create(struct rpcrdma_xprt *);
void rpcrdma_buffer_destroy(struct rpcrdma_buffer *);