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| author |   Nilay Shroff <nilay@linux.ibm.com> | 2025-03-04 15:52:34 +0530 |
|---|---|---|
| committer |   Jens Axboe <axboe@kernel.dk> | 2025-03-10 07:30:18 -0600 |
| commit | 3efe7571c3ae2b6481253a2616c2bb3fbadd503b (patch) | |
| tree | c3d4cfe406cc1a6b48f863e2086d468c294898eb /scripts/gdb/linux/utils.py | |
| parent | block: introduce a dedicated lock for protecting queue elevator updates (diff) | |
| download | wireguard-linux-3efe7571c3ae2b6481253a2616c2bb3fbadd503b.tar.xz wireguard-linux-3efe7571c3ae2b6481253a2616c2bb3fbadd503b.zip | |
block: protect nr_requests update using q->elevator_lock
The sysfs attribute nr_requests could be simultaneously updated from
elevator switch/update or nr_hw_queue update code path. The update to
nr_requests for each of those code paths runs holding q->elevator_lock.
So we should protect access to sysfs attribute nr_requests using q->
elevator_lock instead of q->sysfs_lock.
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Nilay Shroff <nilay@linux.ibm.com>
Link: https://lore.kernel.org/r/20250304102551.2533767-6-nilay@linux.ibm.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'scripts/gdb/linux/utils.py')
0 files changed, 0 insertions, 0 deletions