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-rw-r--r--net/ceph/messenger.c44
1 files changed, 29 insertions, 15 deletions
diff --git a/net/ceph/messenger.c b/net/ceph/messenger.c
index bad3d4ae43f6..38dcf1eb427d 100644
--- a/net/ceph/messenger.c
+++ b/net/ceph/messenger.c
@@ -520,7 +520,8 @@ static int ceph_tcp_recvmsg(struct socket *sock, void *buf, size_t len)
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;
@@ -529,17 +530,20 @@ static int ceph_tcp_recvmsg(struct socket *sock, void *buf, size_t len)
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;
}
/*
@@ -579,18 +583,28 @@ static int __ceph_tcp_sendpage(struct socket *sock, struct page *page,
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;
}