Re: suppress page allocation failure warnings from sys_listxattr

[Colin Walters]

On Tue, 2012-03-13 at 14:22 -0400, Dave Jones wrote:
> This size is user controllable, and so it's trivial for someone to trigger a
> stream of order:4 page allocation errors.

I spent some time today struggling with an order:4 allocation failure
(my application uses CLONE_NEWNET to make an empty network stack for
software builds, and apparently one of the netfilter caches requires
this).

But is that the general principle, that we just add GFP_NOWARN if the
allocation size is trivially user controllable?  I guess examples like
fs/pipe.c:pipe_set_size() agree with you, but it feels kind of like
it's papering over the problem...



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