Add a trace for a bio-remap operation
void blk_add_trace_bio_remap(void * ignore, struct request_queue * q, struct bio * bio, dev_t dev, sector_t from);
ignore
trace callback data parameter (not used)
q
queue the io is for
bio
the source bio
dev
target device
from
source sector
Device mapper or raid target sometimes need to split a bio because it spans a stripe (or similar). Add a trace for that action.