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| author |   Jens Axboe <axboe@kernel.dk> | 2021-10-15 09:44:38 -0600 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2021-10-18 08:51:52 -0600 |
| commit | 2ff0682da6e09c1e0db63a2d2abcd4efb531c8db (patch) | |
| tree | 33c4b58cfd5f1e64981aa654043081e531d0e4fe /tools/perf/scripts/python | |
| parent | block: only mark bio as tracked if it really is tracked (diff) | |
| download | wireguard-linux-2ff0682da6e09c1e0db63a2d2abcd4efb531c8db.tar.xz wireguard-linux-2ff0682da6e09c1e0db63a2d2abcd4efb531c8db.zip | |
block: store elevator state in request
Add an rq private RQF_ELV flag, which tells the block layer that this
request was initialized on a queue that has an IO scheduler attached.
This allows for faster checking in the fast path, rather than having to
deference rq->q later on.
Elevator switching does full quiesce of the queue before detaching an
IO scheduler, so it's safe to cache this in the request itself.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions