blk_add_trace_remap9
Add a trace for a remap operation
Usage
void blk_add_trace_remap(struct request_queue * q, struct bio * bio, dev_t dev, sector_t from);
Arguments
q
queue the io is for
bio
the source bio
dev
target device
from
source sector
Overview
Device mapper or raid target sometimes need to split a bio because it spans a stripe (or similar). Add a trace for that action.