trace_block_bio_bounce9
Used bounce buffer when processing block operation
Usage
void trace_block_bio_bounce(struct request_queue * q, struct bio * bio);
Arguments
q
queue holding the block operation
bio
block operation
Overview
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.
Releases
3 releases since Debian 7 (Wheezy); the text changed 2 times.