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kmalloc cannot figure out whether sleeping is allowable or not
kmalloc cannot figure out whether sleeping is allowable or not
Posted Apr 1, 2008 0:02 UTC (Tue) by rusty (subscriber, #26)Parent article: Atomic context and kernel API design
> In fact, kmalloc() cannot figure out on its own whether sleeping is > allowable or not... You are (of course) correct. Damn, but it was such a beautiful example; the same one I used in 2003 in my OLS keynote, and noone spotted it then either. Thanks, Rusty.
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kmalloc cannot figure out whether sleeping is allowable or not
Posted Apr 2, 2008 0:54 UTC (Wed) by roelofs (subscriber, #2599) [Link]
Damn, but it was such a beautiful example; the same one I used in 2003 in my OLS keynote, and noone spotted it then either.At least you're in good company. ;-)
A somewhat analogous "discovery" involved the thread-(non)safety of the double-checked locking pattern in C++, which various people (possibly including Scott Effective C++ Meyers himself) espoused for some years prior to the publication of an article describing its problems [PDF].
Greg