Re: [PATCH v3 1/3] block: simplify calling convention of elv_unregister_queue()

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On 12/7/21 5:35 PM, Eric Biggers wrote:
From: Eric Biggers <ebiggers@xxxxxxxxxx>

Make elv_unregister_queue() a no-op if q->elevator is NULL or is not
registered.

This simplifies the existing callers, as well as the future caller in
the error path of blk_register_queue().

Also don't bother checking whether q is NULL, since it never is.

Reviewed-by: Bart Van Assche <bvanassche@xxxxxxx>



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