Re: [PATCH] Deadlock during heavy write activity to userspace NFSserver on local NFS mount

[Avi Kivity]

Nick Piggin wrote:

> There is some need arising for a call to set the PF_MEMALLOC flag for
> userspace tasks, so you could probably get a patch accepted. Don't
> call it KSWAPD_HELPER though, maybe MEMFREE or RECLAIM or RECLAIM_HELPER.

I don't think my patch is general enough, it deals with only one level 
of dependencies, and doesn't work if the NFS server (or other process 
that kswapd depends on) depends on kswapd itself. It was intended more 
as an RFC than a request for inclusion.

It's probably fine for those with the exact same problem as us.

> But why is your NFS server needed to reclaim memory? Do you have the
> filesystem mounted locally?

Yes, for use by protocol adapters like samba.

Avi
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