Jan Kara d03f6cdc1f block: Dynamically allocate and refcount backing_dev_info ...

Instead of storing backing_dev_info inside struct request_queue,
allocate it dynamically, reference count it, and free it when the last
reference is dropped. Currently only request_queue holds the reference
but in the following patch we add other users referencing
backing_dev_info.

Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jens Axboe <axboe@fb.com>

2017-02-02 08:20:50 -07:00

7.6 KiB

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