blk_add_trace_bio_remap (9) Linux Manual Page
blk_add_trace_bio_remap – Add a trace for a bio-remap operation
Synopsis
void blk_add_trace_bio_remap(void *ignore, struct request_queue *q, struct bio *bio, dev_t dev, sector_t from);Arguments
ignore
-
- trace callback data parameter (not used)
q
- queue the io is for
bio
- the source bio
dev
- target device
from
- source sector
Description
Device mapper or raid target sometimes need to split a bio because it spans a stripe (or similar). Add a trace for that action.