From: Nicolas Dichtel Date: Fri, 16 Jan 2015 13:35:09 +0000 (+0100) Subject: socket: use ki_nbytes instead of iov_length() X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=66c1a12c65c5bee2427b7813218d1279e4906084;p=openwrt%2Fstaging%2Fblogic.git socket: use ki_nbytes instead of iov_length() This field already contains the length of the iovec, no need to calculate it again. Suggested-by: Al Viro Signed-off-by: Nicolas Dichtel Signed-off-by: David S. Miller --- diff --git a/net/socket.c b/net/socket.c index e1278d7e1d5d..9fcf15b61009 100644 --- a/net/socket.c +++ b/net/socket.c @@ -882,16 +882,15 @@ static ssize_t do_sock_read(struct msghdr *msg, struct kiocb *iocb, unsigned long nr_segs) { struct socket *sock = file->private_data; - size_t size = iov_length(iov, nr_segs); msg->msg_name = NULL; msg->msg_namelen = 0; msg->msg_control = NULL; msg->msg_controllen = 0; - iov_iter_init(&msg->msg_iter, READ, iov, nr_segs, size); + iov_iter_init(&msg->msg_iter, READ, iov, nr_segs, iocb->ki_nbytes); msg->msg_flags = (file->f_flags & O_NONBLOCK) ? MSG_DONTWAIT : 0; - return __sock_recvmsg(iocb, sock, msg, size, msg->msg_flags); + return __sock_recvmsg(iocb, sock, msg, iocb->ki_nbytes, msg->msg_flags); } static ssize_t sock_aio_read(struct kiocb *iocb, const struct iovec *iov, @@ -917,18 +916,17 @@ static ssize_t do_sock_write(struct msghdr *msg, struct kiocb *iocb, unsigned long nr_segs) { struct socket *sock = file->private_data; - size_t size = iov_length(iov, nr_segs); msg->msg_name = NULL; msg->msg_namelen = 0; msg->msg_control = NULL; msg->msg_controllen = 0; - iov_iter_init(&msg->msg_iter, WRITE, iov, nr_segs, size); + iov_iter_init(&msg->msg_iter, WRITE, iov, nr_segs, iocb->ki_nbytes); msg->msg_flags = (file->f_flags & O_NONBLOCK) ? MSG_DONTWAIT : 0; if (sock->type == SOCK_SEQPACKET) msg->msg_flags |= MSG_EOR; - return __sock_sendmsg(iocb, sock, msg, size); + return __sock_sendmsg(iocb, sock, msg, iocb->ki_nbytes); } static ssize_t sock_aio_write(struct kiocb *iocb, const struct iovec *iov,