Messages in this thread | | | Date | Tue, 23 Jun 2009 13:12:39 -0700 | From | Andrew Morton <> | Subject | Re: [patch] eventfd - revised interface and cleanups (2nd rev) |
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On Tue, 23 Jun 2009 12:25:36 -0700 (PDT) Davide Libenzi <davidel@xmailserver.org> wrote:
> Another cleanup this patch does, is making AIO select EVENTFD, instead of > adding a bunch of empty function stubs inside eventfd.h in order to > handle the (AIO && !EVENTFD) case.
Given that we're trying to squeak this patch into 2.6.31, it's quite unfortunate to include unrelated changes. Especially ones which involve the always-problematic "select". Although this one looks less than usually deadly due to the simple dependencies of AIO and eventfd.
However...
Is this a good way of fixing the (AIO && !EVENTFD) case? Surely if the developer selected this combination, he doesn't want to carry the overhead of including eventfd. IOW, if AIO can work acceptably without eventfd being compiled into the kernel then adding the stubs is a superior solution.
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