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generic_pipe_buf_map
Langue: en
Version: June 2009 (debian - 07/07/09)
Section: 9 (Appels noyau Linux)
NAME
generic_pipe_buf_map - virtually map a pipe bufferSYNOPSIS
- 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.
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