Messages in this thread | | | Subject | Re: [RFC, PATCH] locks: remove posix deadlock detection | From | Trond Myklebust <> | Date | Sun, 28 Oct 2007 17:50:30 -0400 |
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On Sun, 2007-10-28 at 14:11 -0600, Matthew Wilcox wrote: > On Sun, Oct 28, 2007 at 06:40:52PM +0000, Alan Cox wrote: > > so we need to fix the bugs - the lock usage and the looping. At that > > point it merely becomes a performance concern to those who use it, which > > is the proper behaviour. If you want a faster non-checking one use > > flock(), or add another flag that is a Linux "don't check for deadlock" > > You can't fix the false EDEADLK detection without solving the halting > problem. Best of luck with that.
I can see that it would be difficult to do efficiently, but basically, this boils down to finding a circular path in a graph. That is hardly an unsolvable issue...
Trond
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