Re: [RFC PATCH for 4.18 00/14] Restartable Sequences

On Wed, 02 May 2018 16:07:48 +0000
Daniel Colascione [off-list ref] wrote:

Why couldn't we take a page fault just before schedule? The reason we can't
take a page fault in atomic context is that doing so might call schedule.
Here, we're about to call schedule _anyway_, so what harm does it do to
call something that might call schedule? If we schedule via that call, we
can skip the manual schedule we were going to perform.

Another issue is slowing down something that is considered a fast path.

-- Steve