Name
trace_block_bio_bounce —
used bounce buffer when processing block operation
Synopsis
void trace_block_bio_bounce ( | struct request_queue * q, |
| | struct bio * bio); |
Arguments
q
queue holding the block operation
bio
block operation
Description
A bounce buffer was used to handle the block operation bio in q.
This occurs when hardware limitations prevent a direct transfer of
data between the bio data memory area and the IO device. Use of a
bounce buffer requires extra copying of data and decreases
performance.