Re: [PATCH] [Request for inclusion] Filesystem in Userspace

[Avi Kivity]

Daniel Phillips wrote:

> Hi Avi,
>
> On Tuesday 30 November 2004 16:37, Avi Kivity wrote:
>  
>
> > The situation with userspace filesystems is:
> >
> >  some process allocates memory, blocking on kswapd as memory is full
> >  kswapd calls userspace filesystem to free memory
> >  userspace filesystem calls kernel, which allocates memory and blocks
> > on kswapd
> >  eventually all processes in the system block on kswapd
> >
> > I have observed (and fixed) this on a real system.
> >    
>
> What was your fix?
>
>  
(with apologies for the long delay)

See the thread at http://lkml.org/lkml/2004/7/26/68. basically allow the 
userspace filesystem process to access behave like kswapd allocation-wise.

--
Do not meddle in the internals of kernels, for they are subtle and quick to panic.

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