Messages in this thread | | | Date | Thu, 1 Dec 2022 00:11:46 -1000 | From | Tejun Heo <> | Subject | Re: [PATCH -next v2 8/9] block: fix null-pointer dereference in ioc_pd_init |
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On Thu, Dec 01, 2022 at 10:12:13AM +0800, Yu Kuai wrote: > 1) By mentioning that "del_gendisk() is quiescing the queue", do you > suggest to add rcu_read_lock()? This seems wrong because blk_iocost_init > requires memory allocation.
Quiescing uses SRCU so that should be fine but I'm not sure whether this is the right one to piggyback on. Jens should have a better idea.
Thanks.
-- tejun
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