Messages in this thread | | | Subject | Re: [PATCH 5/5] hugetlbfs: Limit wait time when trying to share huge PMD | From | Waiman Long <> | Date | Mon, 16 Sep 2019 09:53:43 -0400 |
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On 9/12/19 12:40 AM, Davidlohr Bueso wrote: > > I also think that the right solution is within the mm instead of adding > a new api to rwsem and the extra complexity/overhead to osq _just_ for > this > case. We've managed to not need timeout extensions in our locking > primitives > thus far, which is a good thing imo.
Adding a variant with timeout can be useful in resolving some potential deadlock issues found by lockdep. Anyway, there were talk about merging rt-mutex and regular mutex in the LPC last week. So we will need to have mutex_lock() variant with timeout for that to happen.
Cheers, Longman
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