Messages in this thread | | | Date | Tue, 30 Aug 2011 15:54:38 -0700 | From | Andrew Morton <> | Subject | Re: Approaches to making io_submit not block |
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On Tue, 30 Aug 2011 15:45:35 -0700 Daniel Ehrenberg <dehrenberg@google.com> wrote:
> >> Not quite sure, and after working on them and fixing thing up, I don't > >> even think they are that complex or intrusive (which I think otherwise > >> would've been the main objection). Andrew may know/remember. > > > > Boy, that was a long time ago. __I was always unhappy with the patches > > because of the amount of additional code/complexity they added. > > > > Then the great syslets/threadlets design session happened and it was > > expected that such a facility would make special async handling for AIO > > unnecessary. __Then syslets/threadlets didn't happen. > > Do you think we could accomplish the goals with less additional > code/complexity? It looks like the latest version of the patch set > wasn't so invasive. > > If syslets/threadlets aren't happening, should these patches be > reconsidered for inclusion in the kernel?
I haven't seen any demand at all for the feature in many years. That doesn't mean that there _isn't_ any demand - perhaps everyone got exhausted.
If there is demand then that should be described and circulated, see how much interest there is in resurrecting the effort.
And, of course, the patches should be dragged out and looked at - it's been a number of years now.
Also, glibc has userspace for POSIX AIO. A successful kernel-based implementation would result in glibc migrating away from its current implementation. So we should work with the glibc developers on ensuring that the migration can happen.
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