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SubjectRe: [PATCH] Deadlock during heavy write activity to userspace NFS server on local NFS mount

> On heavy write activity, allocators wait synchronously for kswapd to
> free some memory. But if kswapd is freeing memory via a userspace NFS
> server, that server could be waiting for kswapd, and the system seizes
> instantly.
> This patch (against RHEL 2.4.21-15EL, but should apply either
> literally
> or conceptually to other kernels) allows a process to declare itself
> as
> kswapd's little helper, and thus will not have to wait on kswapd.

Ok, but what if its memory runs out, anyway?

64 bytes from icmp_seq=28 ttl=51 time=448769.1 ms

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