Messages in this thread | | | Date | Wed, 31 Dec 2003 11:32:58 +0100 | From | Jens Axboe <> | Subject | Re: System hangs after echo value > /sys/block/dm-0/queue/nr_requests |
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On Tue, Dec 30 2003, Mike Christie wrote: > Andrew Morton wrote: > > >Where queue_requests_store() does wake_up(&rl->wait[READ]); > > > >It looks like nobody has called blk_init_queue() for this queue and the > >waitqueue head is uninitialised. > > > > DM, MD, rd and loop use blk_alloc_queue and blk_queue_make_request to > initialize their queue, because they only use the make_request_fn. The > attached patch prevents the queue from being registered if only > blk_alloc_queue was called.
I'm fine with that patch since we don't have any attributes in there that apply to just remappers.
-- Jens Axboe
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