Commit 1769e6a8 authored by Chuck Lever's avatar Chuck Lever Committed by Anna Schumaker
Browse files

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: default avatarChuck Lever <chuck.lever@oracle.com>
Signed-off-by: default avatarAnna Schumaker <Anna.Schumaker@Netapp.com>
parent b2ca473b

net/sunrpc/xprtrdma/backchannel.c

+3 −3
Original line number Diff line number Diff line
@@ -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;

net/sunrpc/xprtrdma/verbs.c

+16 −13
Original line number Diff line number Diff line
@@ -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);

	}

net/sunrpc/xprtrdma/xprt_rdma.h

+2 −1
Original line number Diff line number Diff line
@@ -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 *);

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