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| author | Jun'ichi Nomura <j-nomura@ce.jp.nec.com> | 2013-09-21 13:57:47 -0600 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2013-09-21 13:57:47 -0600 |
| commit | 75afb352991ff1cd3cf5955bfe611de6d83a0c87 (patch) | |
| tree | 2873c9fa5c098c4dd5134f395207af9463cc21d9 /block/cfq-iosched.c | |
| parent | 7652113c2f508b1c8176640dcd034730fe79bc48 (diff) | |
| download | linux-0-day-75afb352991ff1cd3cf5955bfe611de6d83a0c87.tar.gz linux-0-day-75afb352991ff1cd3cf5955bfe611de6d83a0c87.tar.xz | |
block: Add nr_bios to block_rq_remap tracepoint
Adding the number of bios in a remapped request to 'block_rq_remap'
tracepoint.
Request remapper clones bios in a request to track the completion
status of each bio. So the number of bios can be useful information
for investigation.
Related discussions:
http://www.redhat.com/archives/dm-devel/2013-August/msg00084.html
http://www.redhat.com/archives/dm-devel/2013-September/msg00024.html
Signed-off-by: Jun'ichi Nomura <j-nomura@ce.jp.nec.com>
Acked-by: Mike Snitzer <snitzer@redhat.com>
Cc: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/cfq-iosched.c')
0 files changed, 0 insertions, 0 deletions