Hi juan,
"Juan J. Quintela" <quintela@fi.udc.es> writes:
> I think that SHM can't work in recent kernels, due to the fact
> that We call prepare_highmem_swapout without locking the page (that is
> necesary with the new semantics). If we don't do that change, the
> page returned by prepare_highmem_swapout will be already
> locked and our call to lock will sleep forever.
>
> Later, Juan.
>
> PD. Christoph, could you see if that helps your problems (you are the only
> person that I know that use highmem & shm).
Yes, your patch fixes the lockup.
Thanks
Christoph
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