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| author |  Christoph Hellwig <hch@lst.de>
| 2021-10-12 11:33:01 +0200 |
|---|---|---|
| committer |  Jens Axboe <axboe@kernel.dk>
| 2021-10-15 21:02:57 -0600 |
| commit | c41108049d143304faf06852c7181262b7b0d242 (patch) | |
| tree | a6212c9aa366bbe05466a237f79e1f57f4b3346a /drivers | |
| parent | block: keep q_usage_counter in atomic mode after del_gendisk (diff) | |
| download | linux-c41108049d143304faf06852c7181262b7b0d242.tar.gz linux-c41108049d143304faf06852c7181262b7b0d242.tar.bz2 linux-c41108049d143304faf06852c7181262b7b0d242.zip | |
kyber: avoid q->disk dereferences in trace points
q->disk becomes invalid after the gendisk is removed. Work around this
by caching the dev_t for the tracepoints. The real fix would be to
properly tear down the I/O schedulers with the gendisk, but that is
a much more invasive change.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20211012093301.GA27795@lst.de
Tested-by: Yi Zhang <yi.zhang@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers')
0 files changed, 0 insertions, 0 deletions