Re: [PATCH] Deadlock during heavy write activity to userspace NFS

[Ulrich Weigand]

Avi Kivity wrote:

>In our case, all block I/O is done using 
>unbuffered I/O, and all memory is preallocated, so we don't need kswapd 
>at all, just that small bit of memory that syscalls consume.

Does your userspace process need to send/receive network packets
in order to perform a write-out?  If so, how can you make sure your
incoming packets aren't thrown away in out-of-memory situations?
(Outgoing packets can use PF_MEMALLOC memory I guess, but incoming
ones aren't associated to any process yet ...)

Bye,
Ulrich

-- 
  Dr. Ulrich Weigand
  weigand@xxxxxxxxxxxxxxxxxxxxxxxxxx
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