Linux Certif

Toute la documentation sur la certification Linux LPI

generic_pipe_buf_map

NAME

generic_pipe_buf_map - virtually map a pipe buffer

SYNOPSIS

void * generic_pipe_buf_map(struct pipe_inode_info * pipe, struct pipe_buffer * buf, int atomic);

ARGUMENTS

pipe

the pipe that the buffer belongs to

buf

the buffer that should be mapped

atomic

whether to use an atomic map

DESCRIPTION

This function returns a kernel virtual address mapping for the pipe_buffer passed in buf. If atomic is set, an atomic map is provided and the caller has to be careful not to fault before calling the unmap function.

Note that this function occupies KM_USER0 if atomic != 0.

COPYRIGHT