Messages in this thread | | | Date | Sat, 9 Apr 2005 06:44:49 +0200 | From | Ingo Molnar <> | Subject | Re: 'BUG: scheduling with irqs disabled' when umounting NFS volume |
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* Daniel Walker <dwalker@mvista.com> wrote:
> I submitted a fix for this a while ago, I think .. > interruptible_sleep_on()'s are broken ..
sleep_on() is a fundamentally broken interface, it only works on UP - but there it _does_ rely on the behavior your patch removes. (i.e. disabled interrupts until we hit schedule())
the PREEMPT_RT kernel makes the limitations of sleep_on() even more apparent. The patch only removes the warning, it doesnt remove the race. To remove the race, sleep_on() usage should be converted to something else. (e.g. one of the wait_event() variants)
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