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BLK_ADD_TRACE_BIO_RE(9) | Block Devices | BLK_ADD_TRACE_BIO_RE(9) |
NAME¶
blk_add_trace_bio_remap - Add a trace for a bio-remap operationSYNOPSIS¶
void
blk_add_trace_bio_remap(void * ignore,
struct request_queue * q,
struct bio * bio,
dev_t dev, sector_t from);
ARGUMENTS¶
ignoretrace 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.COPYRIGHT¶
May 2018 | Kernel Hackers Manual 4.9. |