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| author | Shin'ichiro Kawasaki <shinichiro.kawasaki@wdc.com> | 2025-11-17 11:23:39 +0900 |
|---|---|---|
| committer | Keith Busch <kbusch@kernel.org> | 2025-11-17 08:08:00 -0800 |
| commit | 6d87cd5335784351280f82c47cc8a657271929c3 (patch) | |
| tree | 5dc55d2d767ef553ec5fe3b43f09915a11e56da3 /drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c | |
| parent | 159de7a825aea4242d3f8d32de5853d269dbe72f (diff) | |
nvme-multipath: fix lockdep WARN due to partition scan work
Blktests test cases nvme/014, 057 and 058 fail occasionally due to a
lockdep WARN. As reported in the Closes tag URL, the WARN indicates that
a deadlock can happen due to the dependency among disk->open_mutex,
kblockd workqueue completion and partition_scan_work completion.
To avoid the lockdep WARN and the potential deadlock, cut the dependency
by running the partition_scan_work not by kblockd workqueue but by
nvme_wq.
Reported-by: Yi Zhang <yi.zhang@redhat.com>
Closes: https://lore.kernel.org/linux-block/CAHj4cs8mJ+R_GmQm9R8ebResKAWUE8kF5+_WVg0v8zndmqd6BQ@mail.gmail.com/
Link: https://lore.kernel.org/linux-block/oeyzci6ffshpukpfqgztsdeke5ost5hzsuz4rrsjfmvpqcevax@5nhnwbkzbrpa/
Fixes: 1f021341eef4 ("nvme-multipath: defer partition scanning")
Signed-off-by: Shin'ichiro Kawasaki <shinichiro.kawasaki@wdc.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Keith Busch <kbusch@kernel.org>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_vm.c')
0 files changed, 0 insertions, 0 deletions