Messages in this thread | | | Subject | Re: [patch] doc: add a chapter about trylock functions [Bug 9011] | From | Peter Zijlstra <> | Date | Fri, 16 May 2008 14:21:25 +0200 |
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On Thu, 2008-05-15 at 10:30 +1000, Rusty Russell wrote: > On Wednesday 14 May 2008 01:31:47 Matti Linnanvuori wrote: > > + <function>mutex_trylock()</function> does not suspend your task > > + but returns non-zero if it could lock the mutex on the first try > > + or 0 if not. This function cannot be safely used in hardware or > > + software interrupt contexts despite not sleeping. > > I know this is what the documentation says, but I can't see why. Ingo?
because who would then own the lock?
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