* 2.5.40+ futex broken with COW
@ 2002-10-08 22:13 Peter Wächtler
2002-10-08 23:15 ` Peter Wächtler
0 siblings, 1 reply; 2+ messages in thread
From: Peter Wächtler @ 2002-10-08 22:13 UTC (permalink / raw)
To: linux-kernel, pthreads-devel
The COW changes break PROCESS_SHARED futexes in
mmap( MAP_SHARED ).
I think that COW is unconditionally used on fork().
But you need to check for MAP_SHARED, eh?
If wanted I can provide a testcase (that runs fine on
2.4.19+futex patch + NGPT and on Irix)
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: 2.5.40+ futex broken with COW
2002-10-08 22:13 2.5.40+ futex broken with COW Peter Wächtler
@ 2002-10-08 23:15 ` Peter Wächtler
0 siblings, 0 replies; 2+ messages in thread
From: Peter Wächtler @ 2002-10-08 23:15 UTC (permalink / raw)
To: linux-kernel, pthreads-devel
Peter Wächtler schrieb:
>
> The COW changes break PROCESS_SHARED futexes in
> mmap( MAP_SHARED ).
>
> I think that COW is unconditionally used on fork().
> But you need to check for MAP_SHARED, eh?
>
> If wanted I can provide a testcase (that runs fine on
> 2.4.19+futex patch + NGPT and on Irix)
Argh, forget it. Made a silly mistake too painful to mention :)
^ permalink raw reply [flat|nested] 2+ messages in thread
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