Re: [PATCH 30/32] aio: add delayed cancel support

On Thu, Jan 11, 2018 at 10:27:05AM -0500, Jeff Moyer wrote:

Duh, good point.  My main concern is that things like usb gadget will
have to deal with races between cancellation and completion on their
own.  It would be nice if we had infrastructure for them to use.  I'll
have a look through that code to see if there's something we could or
should be doing.

The current cancel interface is a bit of a mess, as it assumes the
kiocb is embedded into an aio_kiocb.  I think it would need a major
rework in general, but I'll need to fix a couple other aio issues
first.