From 0472e476604998c127f3c80d291113e77c5676ac Mon Sep 17 00:00:00 2001 From: Trond Myklebust Date: Tue, 19 Feb 2019 13:00:13 -0500 Subject: SUNRPC: Convert socket page send code to use iov_iter() Simplify the page send code using iov_iter and bvecs. Signed-off-by: Trond Myklebust --- net/sunrpc/xprt.c | 1 + net/sunrpc/xprtsock.c | 49 +++++++++++++------------------------------------ 2 files changed, 14 insertions(+), 36 deletions(-) (limited to 'net') diff --git a/net/sunrpc/xprt.c b/net/sunrpc/xprt.c index 1587728f40d1..2af6be9d6574 100644 --- a/net/sunrpc/xprt.c +++ b/net/sunrpc/xprt.c @@ -1723,6 +1723,7 @@ void xprt_release(struct rpc_task *task) xprt->ops->buf_free(task); xprt_inject_disconnect(xprt); xdr_free_bvec(&req->rq_rcv_buf); + xdr_free_bvec(&req->rq_snd_buf); if (req->rq_cred != NULL) put_rpccred(req->rq_cred); task->tk_rqstp = NULL; diff --git a/net/sunrpc/xprtsock.c b/net/sunrpc/xprtsock.c index e1546dd6aacc..35d1e81b6e5e 100644 --- a/net/sunrpc/xprtsock.c +++ b/net/sunrpc/xprtsock.c @@ -759,42 +759,18 @@ static int xs_send_kvec(struct socket *sock, struct msghdr *msg, struct kvec *ve return xs_sendmsg(sock, msg, seek); } -static int xs_send_pagedata(struct socket *sock, struct xdr_buf *xdr, unsigned int base, int more, bool zerocopy, int *sent_p) +static int xs_send_pagedata(struct socket *sock, struct msghdr *msg, struct xdr_buf *xdr, size_t base) { - ssize_t (*do_sendpage)(struct socket *sock, struct page *page, - int offset, size_t size, int flags); - struct page **ppage; - unsigned int remainder; int err; - remainder = xdr->page_len - base; - base += xdr->page_base; - ppage = xdr->pages + (base >> PAGE_SHIFT); - base &= ~PAGE_MASK; - do_sendpage = sock->ops->sendpage; - if (!zerocopy) - do_sendpage = sock_no_sendpage; - for(;;) { - unsigned int len = min_t(unsigned int, PAGE_SIZE - base, remainder); - int flags = XS_SENDMSG_FLAGS; + err = xdr_alloc_bvec(xdr, GFP_KERNEL); + if (err < 0) + return err; - remainder -= len; - if (more) - flags |= MSG_MORE; - if (remainder != 0) - flags |= MSG_SENDPAGE_NOTLAST | MSG_MORE; - err = do_sendpage(sock, *ppage, base, len, flags); - if (remainder == 0 || err != len) - break; - *sent_p += err; - ppage++; - base = 0; - } - if (err > 0) { - *sent_p += err; - err = 0; - } - return err; + iov_iter_bvec(&msg->msg_iter, WRITE, xdr->bvec, + xdr_buf_pagecount(xdr), + xdr->page_len + xdr->page_base); + return xs_sendmsg(sock, msg, base + xdr->page_base); } /** @@ -817,7 +793,6 @@ static int xs_sendpages(struct socket *sock, struct sockaddr *addr, int addrlen, }; unsigned int remainder = xdr->len - base; int err = 0; - int sent = 0; if (unlikely(!sock)) return -ENOTSOCK; @@ -843,10 +818,12 @@ static int xs_sendpages(struct socket *sock, struct sockaddr *addr, int addrlen, if (base < xdr->page_len) { unsigned int len = xdr->page_len - base; remainder -= len; - err = xs_send_pagedata(sock, xdr, base, remainder != 0, zerocopy, &sent); - *sent_p += sent; - if (remainder == 0 || sent != len) + if (remainder == 0) + msg.msg_flags &= ~MSG_MORE; + err = xs_send_pagedata(sock, &msg, xdr, base); + if (remainder == 0 || err != len) goto out; + *sent_p += err; base = 0; } else base -= xdr->page_len; -- cgit v1.2.3-58-ga151