int drbd_send(struct drbd_connection *connection, struct socket *sock,
void *buf, size_t size, unsigned msg_flags)
{
- struct kvec iov;
+ struct kvec iov = {.iov_base = buf, .iov_len = size};
struct msghdr msg;
int rv, sent = 0;
/* THINK if (signal_pending) return ... ? */
- iov.iov_base = buf;
- iov.iov_len = size;
-
msg.msg_name = NULL;
msg.msg_namelen = 0;
msg.msg_control = NULL;
msg.msg_controllen = 0;
msg.msg_flags = msg_flags | MSG_NOSIGNAL;
+ iov_iter_kvec(&msg.msg_iter, WRITE | ITER_KVEC, &iov, 1, size);
+
if (sock == connection->data.socket) {
rcu_read_lock();
connection->ko_count = rcu_dereference(connection->net_conf)->ko_count;
drbd_update_congested(connection);
}
do {
- rv = kernel_sendmsg(sock, &msg, &iov, 1, iov.iov_len);
+ rv = sock_sendmsg(sock, &msg);
if (rv == -EAGAIN) {
if (we_should_drop_the_connection(connection, sock))
break;
if (rv < 0)
break;
sent += rv;
- iov.iov_base += rv;
- iov.iov_len -= rv;
} while (sent < size);
if (sock == connection->data.socket)
/*
* Send or receive packet.
*/
-static int sock_xmit(struct nbd_device *nbd, int index, int send, void *buf,
- int size, int msg_flags)
+static int sock_xmit(struct nbd_device *nbd, int index, int send,
+ struct iov_iter *iter, int msg_flags)
{
struct socket *sock = nbd->socks[index]->sock;
int result;
struct msghdr msg;
- struct kvec iov;
unsigned long pflags = current->flags;
if (unlikely(!sock)) {
return -EINVAL;
}
+ msg.msg_iter = *iter;
+
current->flags |= PF_MEMALLOC;
do {
sock->sk->sk_allocation = GFP_NOIO | __GFP_MEMALLOC;
- iov.iov_base = buf;
- iov.iov_len = size;
msg.msg_name = NULL;
msg.msg_namelen = 0;
msg.msg_control = NULL;
msg.msg_flags = msg_flags | MSG_NOSIGNAL;
if (send)
- result = kernel_sendmsg(sock, &msg, &iov, 1, size);
+ result = sock_sendmsg(sock, &msg);
else
- result = kernel_recvmsg(sock, &msg, &iov, 1, size,
- msg.msg_flags);
+ result = sock_recvmsg(sock, &msg, msg.msg_flags);
if (result <= 0) {
if (result == 0)
result = -EPIPE; /* short read */
break;
}
- size -= result;
- buf += result;
- } while (size > 0);
+ } while (msg_data_left(&msg));
tsk_restore_flags(current, pflags, PF_MEMALLOC);
return result;
}
-static inline int sock_send_bvec(struct nbd_device *nbd, int index,
- struct bio_vec *bvec, int flags)
-{
- int result;
- void *kaddr = kmap(bvec->bv_page);
- result = sock_xmit(nbd, index, 1, kaddr + bvec->bv_offset,
- bvec->bv_len, flags);
- kunmap(bvec->bv_page);
- return result;
-}
-
/* always call with the tx_lock held */
static int nbd_send_cmd(struct nbd_device *nbd, struct nbd_cmd *cmd, int index)
{
struct request *req = blk_mq_rq_from_pdu(cmd);
int result;
- struct nbd_request request;
+ struct nbd_request request = {.magic = htonl(NBD_REQUEST_MAGIC)};
+ struct kvec iov = {.iov_base = &request, .iov_len = sizeof(request)};
+ struct iov_iter from;
unsigned long size = blk_rq_bytes(req);
struct bio *bio;
u32 type;
u32 tag = blk_mq_unique_tag(req);
+ iov_iter_kvec(&from, WRITE | ITER_KVEC, &iov, 1, sizeof(request));
+
switch (req_op(req)) {
case REQ_OP_DISCARD:
type = NBD_CMD_TRIM;
return -EIO;
}
- memset(&request, 0, sizeof(request));
- request.magic = htonl(NBD_REQUEST_MAGIC);
request.type = htonl(type);
if (type != NBD_CMD_FLUSH) {
request.from = cpu_to_be64((u64)blk_rq_pos(req) << 9);
dev_dbg(nbd_to_dev(nbd), "request %p: sending control (%s@%llu,%uB)\n",
cmd, nbdcmd_to_ascii(type),
(unsigned long long)blk_rq_pos(req) << 9, blk_rq_bytes(req));
- result = sock_xmit(nbd, index, 1, &request, sizeof(request),
+ result = sock_xmit(nbd, index, 1, &from,
(type == NBD_CMD_WRITE) ? MSG_MORE : 0);
if (result <= 0) {
dev_err_ratelimited(disk_to_dev(nbd->disk),
dev_dbg(nbd_to_dev(nbd), "request %p: sending %d bytes data\n",
cmd, bvec.bv_len);
- result = sock_send_bvec(nbd, index, &bvec, flags);
+ iov_iter_bvec(&from, ITER_BVEC | WRITE,
+ &bvec, 1, bvec.bv_len);
+ result = sock_xmit(nbd, index, 1, &from, flags);
if (result <= 0) {
dev_err(disk_to_dev(nbd->disk),
"Send data failed (result %d)\n",
return 0;
}
-static inline int sock_recv_bvec(struct nbd_device *nbd, int index,
- struct bio_vec *bvec)
-{
- int result;
- void *kaddr = kmap(bvec->bv_page);
- result = sock_xmit(nbd, index, 0, kaddr + bvec->bv_offset,
- bvec->bv_len, MSG_WAITALL);
- kunmap(bvec->bv_page);
- return result;
-}
-
/* NULL returned = something went wrong, inform userspace */
static struct nbd_cmd *nbd_read_stat(struct nbd_device *nbd, int index)
{
struct request *req = NULL;
u16 hwq;
u32 tag;
+ struct kvec iov = {.iov_base = &reply, .iov_len = sizeof(reply)};
+ struct iov_iter to;
reply.magic = 0;
- result = sock_xmit(nbd, index, 0, &reply, sizeof(reply), MSG_WAITALL);
+ iov_iter_kvec(&to, READ | ITER_KVEC, &iov, 1, sizeof(reply));
+ result = sock_xmit(nbd, index, 0, &to, MSG_WAITALL);
if (result <= 0) {
if (!test_bit(NBD_DISCONNECTED, &nbd->runtime_flags) &&
!test_bit(NBD_DISCONNECT_REQUESTED, &nbd->runtime_flags))
struct bio_vec bvec;
rq_for_each_segment(bvec, req, iter) {
- result = sock_recv_bvec(nbd, index, &bvec);
+ iov_iter_bvec(&to, ITER_BVEC | READ,
+ &bvec, 1, bvec.bv_len);
+ result = sock_xmit(nbd, index, 0, &to, MSG_WAITALL);
if (result <= 0) {
dev_err(disk_to_dev(nbd->disk), "Receive data failed (result %d)\n",
result);
static void send_disconnects(struct nbd_device *nbd)
{
- struct nbd_request request = {};
+ struct nbd_request request = {
+ .magic = htonl(NBD_REQUEST_MAGIC),
+ .type = htonl(NBD_CMD_DISC),
+ };
+ struct kvec iov = {.iov_base = &request, .iov_len = sizeof(request)};
+ struct iov_iter from;
int i, ret;
- request.magic = htonl(NBD_REQUEST_MAGIC);
- request.type = htonl(NBD_CMD_DISC);
-
for (i = 0; i < nbd->num_connections; i++) {
- ret = sock_xmit(nbd, i, 1, &request, sizeof(request), 0);
+ iov_iter_kvec(&from, WRITE | ITER_KVEC, &iov, 1, sizeof(request));
+ ret = sock_xmit(nbd, i, 1, &from, 0);
if (ret <= 0)
dev_err(disk_to_dev(nbd->disk),
"Send disconnect failed %d\n", ret);
return total_rx;
}
-static int iscsit_do_tx_data(
- struct iscsi_conn *conn,
- struct iscsi_data_count *count)
-{
- int ret, iov_len;
- struct kvec *iov_p;
- struct msghdr msg;
-
- if (!conn || !conn->sock || !conn->conn_ops)
- return -1;
-
- if (count->data_length <= 0) {
- pr_err("Data length is: %d\n", count->data_length);
- return -1;
- }
-
- memset(&msg, 0, sizeof(struct msghdr));
-
- iov_p = count->iov;
- iov_len = count->iov_count;
-
- ret = kernel_sendmsg(conn->sock, &msg, iov_p, iov_len,
- count->data_length);
- if (ret != count->data_length) {
- pr_err("Unexpected ret: %d send data %d\n",
- ret, count->data_length);
- return -EPIPE;
- }
- pr_debug("ret: %d, sent data: %d\n", ret, count->data_length);
-
- return ret;
-}
-
int rx_data(
struct iscsi_conn *conn,
struct kvec *iov,
int iov_count,
int data)
{
- struct iscsi_data_count c;
+ struct msghdr msg;
+ int total_tx = 0;
if (!conn || !conn->sock || !conn->conn_ops)
return -1;
- memset(&c, 0, sizeof(struct iscsi_data_count));
- c.iov = iov;
- c.iov_count = iov_count;
- c.data_length = data;
- c.type = ISCSI_TX_DATA;
+ if (data <= 0) {
+ pr_err("Data length is: %d\n", data);
+ return -1;
+ }
+
+ memset(&msg, 0, sizeof(struct msghdr));
+
+ iov_iter_kvec(&msg.msg_iter, WRITE | ITER_KVEC,
+ iov, iov_count, data);
+
+ while (msg_data_left(&msg)) {
+ int tx_loop = sock_sendmsg(conn->sock, &msg);
+ if (tx_loop <= 0) {
+ pr_debug("tx_loop: %d total_tx %d\n",
+ tx_loop, total_tx);
+ return tx_loop;
+ }
+ total_tx += tx_loop;
+ pr_debug("tx_loop: %d, total_tx: %d, data: %d\n",
+ tx_loop, total_tx, data);
+ }
- return iscsit_do_tx_data(conn, &c);
+ return total_tx;
}
void iscsit_collect_login_stats(
int usbip_recv(struct socket *sock, void *buf, int size)
{
int result;
- struct msghdr msg;
- struct kvec iov;
+ struct kvec iov = {.iov_base = buf, .iov_len = size};
+ struct msghdr msg = {.msg_flags = MSG_NOSIGNAL};
int total = 0;
- /* for blocks of if (usbip_dbg_flag_xmit) */
- char *bp = buf;
- int osize = size;
+ iov_iter_kvec(&msg.msg_iter, READ|ITER_KVEC, &iov, 1, size);
usbip_dbg_xmit("enter\n");
}
do {
+ int sz = msg_data_left(&msg);
sock->sk->sk_allocation = GFP_NOIO;
- iov.iov_base = buf;
- iov.iov_len = size;
- msg.msg_name = NULL;
- msg.msg_namelen = 0;
- msg.msg_control = NULL;
- msg.msg_controllen = 0;
- msg.msg_flags = MSG_NOSIGNAL;
-
- result = kernel_recvmsg(sock, &msg, &iov, 1, size, MSG_WAITALL);
+
+ result = sock_recvmsg(sock, &msg, MSG_WAITALL);
if (result <= 0) {
pr_debug("receive sock %p buf %p size %u ret %d total %d\n",
- sock, buf, size, result, total);
+ sock, buf + total, sz, result, total);
goto err;
}
- size -= result;
- buf += result;
total += result;
- } while (size > 0);
+ } while (msg_data_left(&msg));
if (usbip_dbg_flag_xmit) {
if (!in_interrupt())
pr_debug("interrupt :");
pr_debug("receiving....\n");
- usbip_dump_buffer(bp, osize);
- pr_debug("received, osize %d ret %d size %d total %d\n",
- osize, result, size, total);
+ usbip_dump_buffer(buf, size);
+ pr_debug("received, osize %d ret %d size %zd total %d\n",
+ size, result, msg_data_left(&msg), total);
}
return total;
/*
* attach the data from a bunch of pages on an inode to a call
*/
-static int afs_send_pages(struct afs_call *call, struct msghdr *msg,
- struct kvec *iov)
+static int afs_send_pages(struct afs_call *call, struct msghdr *msg)
{
struct page *pages[8];
unsigned count, n, loop, offset, to;
loop = 0;
do {
+ struct bio_vec bvec = {.bv_page = pages[loop],
+ .bv_offset = offset};
msg->msg_flags = 0;
to = PAGE_SIZE;
if (first + loop >= last)
to = call->last_to;
else
msg->msg_flags = MSG_MORE;
- iov->iov_base = kmap(pages[loop]) + offset;
- iov->iov_len = to - offset;
+ bvec.bv_len = to - offset;
offset = 0;
_debug("- range %u-%u%s",
offset, to, msg->msg_flags ? " [more]" : "");
- iov_iter_kvec(&msg->msg_iter, WRITE | ITER_KVEC,
- iov, 1, to - offset);
+ iov_iter_bvec(&msg->msg_iter, WRITE | ITER_BVEC,
+ &bvec, 1, to - offset);
/* have to change the state *before* sending the last
* packet as RxRPC might give us the reply before it
call->state = AFS_CALL_AWAIT_REPLY;
ret = rxrpc_kernel_send_data(afs_socket, call->rxcall,
msg, to - offset);
- kunmap(pages[loop]);
if (ret < 0)
break;
} while (++loop < count);
goto error_do_abort;
if (call->send_pages) {
- ret = afs_send_pages(call, &msg, iov);
+ ret = afs_send_pages(call, &msg);
if (ret < 0)
goto error_do_abort;
}
return kernel_recvmsg(sock, &msg, &iov, 1, size, flags);
}
-static inline int do_send(struct socket *sock, struct kvec *vec, int count,
- int len, unsigned flags)
-{
- struct msghdr msg = { .msg_flags = flags };
- return kernel_sendmsg(sock, &msg, vec, count, len);
-}
-
static int _send(struct socket *sock, const void *buff, int len)
{
- struct kvec vec;
- vec.iov_base = (void *) buff;
- vec.iov_len = len;
- return do_send(sock, &vec, 1, len, 0);
+ struct msghdr msg = { .msg_flags = 0 };
+ struct kvec vec = {.iov_base = (void *)buff, .iov_len = len};
+ iov_iter_kvec(&msg.msg_iter, WRITE | ITER_KVEC, &vec, 1, len);
+ return sock_sendmsg(sock, &msg);
}
struct ncp_request_reply {
size_t datalen;
int result;
enum { RQ_DONE, RQ_INPROGRESS, RQ_QUEUED, RQ_IDLE, RQ_ABANDONED } status;
- struct kvec* tx_ciov;
- size_t tx_totallen;
- size_t tx_iovlen;
+ struct iov_iter from;
struct kvec tx_iov[3];
u_int16_t tx_type;
u_int32_t sign[6];
static int ncpdgram_send(struct socket *sock, struct ncp_request_reply *req)
{
- struct kvec vec[3];
- /* sock_sendmsg updates iov pointers for us :-( */
- memcpy(vec, req->tx_ciov, req->tx_iovlen * sizeof(vec[0]));
- return do_send(sock, vec, req->tx_iovlen,
- req->tx_totallen, MSG_DONTWAIT);
+ struct msghdr msg = { .msg_iter = req->from, .msg_flags = MSG_DONTWAIT };
+ return sock_sendmsg(sock, &msg);
}
static void __ncptcp_try_send(struct ncp_server *server)
{
struct ncp_request_reply *rq;
- struct kvec *iov;
- struct kvec iovc[3];
+ struct msghdr msg = { .msg_flags = MSG_NOSIGNAL | MSG_DONTWAIT };
int result;
rq = server->tx.creq;
if (!rq)
return;
- /* sock_sendmsg updates iov pointers for us :-( */
- memcpy(iovc, rq->tx_ciov, rq->tx_iovlen * sizeof(iov[0]));
- result = do_send(server->ncp_sock, iovc, rq->tx_iovlen,
- rq->tx_totallen, MSG_NOSIGNAL | MSG_DONTWAIT);
+ msg.msg_iter = rq->from;
+ result = sock_sendmsg(server->ncp_sock, &msg);
if (result == -EAGAIN)
return;
__ncp_abort_request(server, rq, result);
return;
}
- if (result >= rq->tx_totallen) {
+ if (!msg_data_left(&msg)) {
server->rcv.creq = rq;
server->tx.creq = NULL;
return;
}
- rq->tx_totallen -= result;
- iov = rq->tx_ciov;
- while (iov->iov_len <= result) {
- result -= iov->iov_len;
- iov++;
- rq->tx_iovlen--;
- }
- iov->iov_base += result;
- iov->iov_len -= result;
- rq->tx_ciov = iov;
+ rq->from = msg.msg_iter;
}
static inline void ncp_init_header(struct ncp_server *server, struct ncp_request_reply *req, struct ncp_request_header *h)
static void ncpdgram_start_request(struct ncp_server *server, struct ncp_request_reply *req)
{
- size_t signlen;
- struct ncp_request_header* h;
+ size_t signlen, len = req->tx_iov[1].iov_len;
+ struct ncp_request_header *h = req->tx_iov[1].iov_base;
- req->tx_ciov = req->tx_iov + 1;
-
- h = req->tx_iov[1].iov_base;
ncp_init_header(server, req, h);
- signlen = sign_packet(server, req->tx_iov[1].iov_base + sizeof(struct ncp_request_header) - 1,
- req->tx_iov[1].iov_len - sizeof(struct ncp_request_header) + 1,
- cpu_to_le32(req->tx_totallen), req->sign);
+ signlen = sign_packet(server,
+ req->tx_iov[1].iov_base + sizeof(struct ncp_request_header) - 1,
+ len - sizeof(struct ncp_request_header) + 1,
+ cpu_to_le32(len), req->sign);
if (signlen) {
- req->tx_ciov[1].iov_base = req->sign;
- req->tx_ciov[1].iov_len = signlen;
- req->tx_iovlen += 1;
- req->tx_totallen += signlen;
+ /* NCP over UDP appends signature */
+ req->tx_iov[2].iov_base = req->sign;
+ req->tx_iov[2].iov_len = signlen;
}
+ iov_iter_kvec(&req->from, WRITE | ITER_KVEC,
+ req->tx_iov + 1, signlen ? 2 : 1, len + signlen);
server->rcv.creq = req;
server->timeout_last = server->m.time_out;
server->timeout_retries = server->m.retry_count;
static void ncptcp_start_request(struct ncp_server *server, struct ncp_request_reply *req)
{
- size_t signlen;
- struct ncp_request_header* h;
+ size_t signlen, len = req->tx_iov[1].iov_len;
+ struct ncp_request_header *h = req->tx_iov[1].iov_base;
- req->tx_ciov = req->tx_iov;
- h = req->tx_iov[1].iov_base;
ncp_init_header(server, req, h);
signlen = sign_packet(server, req->tx_iov[1].iov_base + sizeof(struct ncp_request_header) - 1,
- req->tx_iov[1].iov_len - sizeof(struct ncp_request_header) + 1,
- cpu_to_be32(req->tx_totallen + 24), req->sign + 4) + 16;
+ len - sizeof(struct ncp_request_header) + 1,
+ cpu_to_be32(len + 24), req->sign + 4) + 16;
req->sign[0] = htonl(NCP_TCP_XMIT_MAGIC);
- req->sign[1] = htonl(req->tx_totallen + signlen);
+ req->sign[1] = htonl(len + signlen);
req->sign[2] = htonl(NCP_TCP_XMIT_VERSION);
req->sign[3] = htonl(req->datalen + 8);
+ /* NCP over TCP prepends signature */
req->tx_iov[0].iov_base = req->sign;
req->tx_iov[0].iov_len = signlen;
- req->tx_iovlen += 1;
- req->tx_totallen += signlen;
+ iov_iter_kvec(&req->from, WRITE | ITER_KVEC,
+ req->tx_iov, 2, len + signlen);
server->tx.creq = req;
__ncptcp_try_send(server);
static void info_server(struct ncp_server *server, unsigned int id, const void * data, size_t len)
{
if (server->info_sock) {
- struct kvec iov[2];
- __be32 hdr[2];
-
- hdr[0] = cpu_to_be32(len + 8);
- hdr[1] = cpu_to_be32(id);
-
- iov[0].iov_base = hdr;
- iov[0].iov_len = 8;
- iov[1].iov_base = (void *) data;
- iov[1].iov_len = len;
+ struct msghdr msg = { .msg_flags = MSG_NOSIGNAL };
+ __be32 hdr[2] = {cpu_to_be32(len + 8), cpu_to_be32(id)};
+ struct kvec iov[2] = {
+ {.iov_base = hdr, .iov_len = 8},
+ {.iov_base = (void *)data, .iov_len = len},
+ };
+
+ iov_iter_kvec(&msg.msg_iter, ITER_KVEC | WRITE,
+ iov, 2, len + 8);
- do_send(server->info_sock, iov, 2, len + 8, MSG_NOSIGNAL);
+ sock_sendmsg(server->info_sock, &msg);
}
}
req->datalen = max_reply_size;
req->tx_iov[1].iov_base = server->packet;
req->tx_iov[1].iov_len = size;
- req->tx_iovlen = 1;
- req->tx_totallen = size;
req->tx_type = *(u_int16_t*)server->packet;
result = ncp_add_request(server, req);
struct msghdr msg = { .msg_flags = MSG_DONTWAIT | MSG_NOSIGNAL };
int r;
- r = kernel_recvmsg(sock, &msg, &iov, 1, len, msg.msg_flags);
+ iov_iter_kvec(&msg.msg_iter, READ | ITER_KVEC, &iov, 1, len);
+ r = sock_recvmsg(sock, &msg, msg.msg_flags);
if (r == -EAGAIN)
r = 0;
return r;
static int ceph_tcp_recvpage(struct socket *sock, struct page *page,
int page_offset, size_t length)
{
- void *kaddr;
- int ret;
+ struct bio_vec bvec = {
+ .bv_page = page,
+ .bv_offset = page_offset,
+ .bv_len = length
+ };
+ struct msghdr msg = { .msg_flags = MSG_DONTWAIT | MSG_NOSIGNAL };
+ int r;
BUG_ON(page_offset + length > PAGE_SIZE);
-
- kaddr = kmap(page);
- BUG_ON(!kaddr);
- ret = ceph_tcp_recvmsg(sock, kaddr + page_offset, length);
- kunmap(page);
-
- return ret;
+ iov_iter_bvec(&msg.msg_iter, READ | ITER_BVEC, &bvec, 1, length);
+ r = sock_recvmsg(sock, &msg, msg.msg_flags);
+ if (r == -EAGAIN)
+ r = 0;
+ return r;
}
/*
static int ceph_tcp_sendpage(struct socket *sock, struct page *page,
int offset, size_t size, bool more)
{
+ struct msghdr msg = { .msg_flags = MSG_DONTWAIT | MSG_NOSIGNAL };
+ struct bio_vec bvec;
int ret;
- struct kvec iov;
/* sendpage cannot properly handle pages with page_count == 0,
* we need to fallback to sendmsg if that's the case */
if (page_count(page) >= 1)
return __ceph_tcp_sendpage(sock, page, offset, size, more);
- iov.iov_base = kmap(page) + offset;
- iov.iov_len = size;
- ret = ceph_tcp_sendmsg(sock, &iov, 1, size, more);
- kunmap(page);
+ bvec.bv_page = page;
+ bvec.bv_offset = offset;
+ bvec.bv_len = size;
+
+ if (more)
+ msg.msg_flags |= MSG_MORE;
+ else
+ msg.msg_flags |= MSG_EOR; /* superfluous, but what the hell */
+
+ iov_iter_bvec(&msg.msg_iter, WRITE | ITER_BVEC, &bvec, 1, size);
+ ret = sock_sendmsg(sock, &msg);
+ if (ret == -EAGAIN)
+ ret = 0;
return ret;
}
static
DEFINE_PER_CPU_SHARED_ALIGNED(struct rds_page_remainder, rds_page_remainders);
-/*
- * returns 0 on success or -errno on failure.
- *
- * We don't have to worry about flush_dcache_page() as this only works
- * with private pages. If, say, we were to do directed receive to pinned
- * user pages we'd have to worry more about cache coherence. (Though
- * the flush_dcache_page() in get_user_pages() would probably be enough).
- */
-int rds_page_copy_user(struct page *page, unsigned long offset,
- void __user *ptr, unsigned long bytes,
- int to_user)
-{
- unsigned long ret;
- void *addr;
-
- addr = kmap(page);
- if (to_user) {
- rds_stats_add(s_copy_to_user, bytes);
- ret = copy_to_user(ptr, addr + offset, bytes);
- } else {
- rds_stats_add(s_copy_from_user, bytes);
- ret = copy_from_user(addr + offset, ptr, bytes);
- }
- kunmap(page);
-
- return ret ? -EFAULT : 0;
-}
-EXPORT_SYMBOL_GPL(rds_page_copy_user);
-
/**
* rds_page_remainder_alloc - build up regions of a message.
*
/* page.c */
int rds_page_remainder_alloc(struct scatterlist *scat, unsigned long bytes,
gfp_t gfp);
-int rds_page_copy_user(struct page *page, unsigned long offset,
- void __user *ptr, unsigned long bytes,
- int to_user);
-#define rds_page_copy_to_user(page, offset, ptr, bytes) \
- rds_page_copy_user(page, offset, ptr, bytes, 1)
-#define rds_page_copy_from_user(page, offset, ptr, bytes) \
- rds_page_copy_user(page, offset, ptr, bytes, 0)
void rds_page_exit(void);
/* recv.c */
projects / linux-2.6-microblaze.git / commitdiff