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| author |   Ming Lei <ming.lei@redhat.com> | 2020-09-01 18:07:38 +0800 |
|---|---|---|
| committer |   Jens Axboe <axboe@kernel.dk> | 2020-09-01 08:34:08 -0600 |
| commit | cafe01ef8fcb248583038e1be071383530fe355a (patch) | |
| tree | af141eea39609d18694bc3a9f8531ce53c8c3254 /drivers/usb/cdns3/cdns3-debug.h | |
| parent | block: ensure bdi->io_pages is always initialized (diff) | |
| download | wireguard-linux-cafe01ef8fcb248583038e1be071383530fe355a.tar.xz wireguard-linux-cafe01ef8fcb248583038e1be071383530fe355a.zip | |
block: release disk reference in hd_struct_free_work
Commit e8c7d14ac6c3 ("block: revert back to synchronous request_queue removal")
stops to release request queue from wq context because that commit
supposed all blk_put_queue() is called in context which is allowed
to sleep. However, this assumption isn't true because we release disk's
reference in partition's percpu_ref's ->release() which doesn't allow
to sleep, because the ->release() is run via call_rcu().
Fixes this issue by moving put disk reference into hd_struct_free_work()
Fixes: e8c7d14ac6c3 ("block: revert back to synchronous request_queue removal")
Reported-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Tested-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Luis Chamberlain <mcgrof@kernel.org>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/usb/cdns3/cdns3-debug.h')
0 files changed, 0 insertions, 0 deletions