函数逻辑报告

函数名称：Send 'sd->len' bytes to socket from 'sd->file' at position 'sd->pos'* using sendpage(). Return the number of bytes sent.

函数原型：static int pipe_to_sendpage(struct pipe_inode_info *pipe, struct pipe_buffer *buf, struct splice_desc *sd)

返回类型：int

参数：