Messages in this thread |  | | | Date | Sat, 25 May 2002 15:14:40 -0400 | | From | Karim Yaghmour <> | | Subject | Re: patent on O_ATOMICLOOKUP [Re: [PATCH] loopable tmpfs (2.4.17)] |
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Linus Torvalds wrote: > "..every single spinlock in the kernel assumes that the kernel isn't > preempted, which means that user apps that can preempt the kernel > cannot use them."
I misread this paragraph, the rest of my reply follows from this laps.
I said there was no "priority inversion" in the sense that there are no priority inversion problems during the execution of such user-space rt tasks. From a purely static perspective, however, the user-space rt tasks do indeed come to have a higher priority than the kernel. No fuss there.
That being said, I differ on your judgement of this method.
Karim
=================================================== Karim Yaghmour karim@opersys.com Embedded and Real-Time Linux Expert =================================================== - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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