diff options
| author | Keith Busch <[email protected]> | 2017-05-30 14:39:11 -0400 |
|---|---|---|
| committer | Jens Axboe <[email protected]> | 2017-05-30 12:32:37 -0600 |
| commit | e4dc2b32df5573b077f6723e01cf761d236d5113 (patch) | |
| tree | 33a61d78cffb1db47474a60157d550c55e0ce6a8 /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | fa9765323a93473d3853d04c9903958453c92ad4 (diff) | |
blk-mq: Take tagset lock when updating hw queues
The tagset lock needs to be held when iterating the tag_list, so a
lockdep assert was added when updating number of hardware queues. The
drivers calling this API, however, were unaware of the new requirement,
so are failing the assertion.
This patch takes the lock within the blk-mq function so the drivers do
not have to be modified in order to be safe.
Fixes: 705cda97e ("blk-mq: Make it safe to use RCU to iterate over blk_mq_tag_set.tag_list")
Reported-by: Gabriel Krisman Bertazi <[email protected]>
Reviewed-by: Bart Van Assche <[email protected]>
Signed-off-by: Keith Busch <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions