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Commit eeb2c4fb authored by Jacob Wen's avatar Jacob Wen Committed by David S. Miller
Browse files

rds: use DIV_ROUND_UP instead of ceil 



Yes indeed, DIV_ROUND_UP is in kernel.h.

Signed-off-by: default avatarJacob Wen <jian.w.wen@oracle.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 10262b0b

net/rds/ib_send.c

+2 −2
Original line number Diff line number Diff line
@@ -522,7 +522,7 @@ int rds_ib_xmit(struct rds_connection *conn, struct rds_message *rm, 
	if (be32_to_cpu(rm->m_inc.i_hdr.h_len) == 0)

		i = 1;

	else

		i = ceil(be32_to_cpu(rm->m_inc.i_hdr.h_len), RDS_FRAG_SIZE);

		i = DIV_ROUND_UP(be32_to_cpu(rm->m_inc.i_hdr.h_len), RDS_FRAG_SIZE);



	work_alloc = rds_ib_ring_alloc(&ic->i_send_ring, i, &pos);

	if (work_alloc == 0) {
@@ -879,7 +879,7 @@ int rds_ib_xmit_rdma(struct rds_connection *conn, struct rm_rdma_op *op) 
	 * Instead of knowing how to return a partial rdma read/write we insist that there

	 * be enough work requests to send the entire message.

	 */

	i = ceil(op->op_count, max_sge);

	i = DIV_ROUND_UP(op->op_count, max_sge);



	work_alloc = rds_ib_ring_alloc(&ic->i_send_ring, i, &pos);

	if (work_alloc != i) {

net/rds/message.c

+2 −2
Original line number Diff line number Diff line
@@ -341,7 +341,7 @@ struct rds_message *rds_message_map_pages(unsigned long *page_addrs, unsigned in 
{

	struct rds_message *rm;

	unsigned int i;

	int num_sgs = ceil(total_len, PAGE_SIZE);

	int num_sgs = DIV_ROUND_UP(total_len, PAGE_SIZE);

	int extra_bytes = num_sgs * sizeof(struct scatterlist);

	int ret;
@@ -351,7 +351,7 @@ struct rds_message *rds_message_map_pages(unsigned long *page_addrs, unsigned in 


	set_bit(RDS_MSG_PAGEVEC, &rm->m_flags);

	rm->m_inc.i_hdr.h_len = cpu_to_be32(total_len);

	rm->data.op_nents = ceil(total_len, PAGE_SIZE);

	rm->data.op_nents = DIV_ROUND_UP(total_len, PAGE_SIZE);

	rm->data.op_sg = rds_message_alloc_sgs(rm, num_sgs, &ret);

	if (!rm->data.op_sg) {

		rds_message_put(rm);

net/rds/rds.h

+0 −4
Original line number Diff line number Diff line
@@ -48,10 +48,6 @@ void rdsdebug(char *fmt, ...) 
}

#endif



/* XXX is there one of these somewhere? */

#define ceil(x, y) \

	({ unsigned long __x = (x), __y = (y); (__x + __y - 1) / __y; })



#define RDS_FRAG_SHIFT	12

#define RDS_FRAG_SIZE	((unsigned int)(1 << RDS_FRAG_SHIFT))

net/rds/send.c

+1 −1
Original line number Diff line number Diff line
@@ -1107,7 +1107,7 @@ int rds_sendmsg(struct socket *sock, struct msghdr *msg, size_t payload_len) 
	size_t total_payload_len = payload_len, rdma_payload_len = 0;

	bool zcopy = ((msg->msg_flags & MSG_ZEROCOPY) &&

		      sock_flag(rds_rs_to_sk(rs), SOCK_ZEROCOPY));

	int num_sgs = ceil(payload_len, PAGE_SIZE);

	int num_sgs = DIV_ROUND_UP(payload_len, PAGE_SIZE);

	int namelen;

	struct rds_iov_vector_arr vct;

	int ind;