Re: [PATCH 1/2] sched/wait: Break up long wake list walk

[Linus Torvalds]

On Tue, Aug 15, 2017 at 3:56 PM, Linus Torvalds
<torvalds@xxxxxxxxxxxxxxxxxxxx> wrote:
>
> Except they really don't actually work for this case, exactly because
> they also simplify away "minor" details like exclusive vs
> non-exclusive etc.
>
> The page wait-queue very much has a mix of "wake all" and "wake one" semantics.

Oh, and the page wait-queue really needs that key argument too, which
is another thing that swait queue code got rid of in the name of
simplicity.

So no. The swait code is absolutely _entirely_ the wrong thing to use.

                 Linus