[dm-devel] [PATCH 2/5] aio: kiocb_cancel()
Theodore Ts'o
tytso at mit.edu
Wed Oct 10 23:21:51 UTC 2012
On Wed, Oct 10, 2012 at 02:20:51PM -0700, Zach Brown wrote:
>
> I sympathize, but the reality is that the current infrastructure
> is very bad and no one is using it.
>
> It's not like we're getting rid of the syscall. I'll be behaving
> exactly as it does today: returning the error code that indicates that
> cancellation failed because it lost the race with completion. Every
> caller has to cope with that to use cancel safely.
Yes, I realize it doesn't work today. But hopefully we'll be able to
reimplement it in a cleaner way. That's why I said, I hope we don't
give up on the functionality of aio_cancel --- not that I'm against
removing what we currently have.
Cheers,
- Ted
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