Re: [RFC PATCH 02/21] Add a prelocked wake-up

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On Wed, Oct 16, 2019 at 7:26 AM David Howells <dhowells@xxxxxxxxxx> wrote:
>
> Btw, is there any point in __wake_up_sync_key() taking a nr_exclusive
> argument since it clears WF_SYNC if nr_exclusive != 1 and doesn't make sense
> to be >1 anyway.

Ack, looks sane to me.

We have _very_ few users of nr_exclusive. I wonder if it's even worth
having at all, but it's definitely not worth it here.

I'd love for nr_exclusive to go away and be replaced by WF_ALL
instead. Right now it looks like there is one SGI driver that uses it,
and the sbitmap code. That was all I could find.

Oh well. You removing one case is at last a small amount of progress.

         Linus



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