Re: Terminate process that fails on a constrained allocation

[Christoph Lameter <clameter@engr.sgi.com>]

On Wed, 8 Feb 2006, Andrew Morton wrote:

> > If a caller cannot handle NULL then __GFP_NOFAIL has to be set, right?
> 
> That would assume non-buggy code.  I'm talking about the exercising of
> hitherto-unused codepaths.  We've fixed many, many pieces of code which
> simply assumed that kmalloc(GFP_KERNEL) succeeds.  I doubt if many such
> simple bugs still exist, but there will be more subtle ones in there.

We could add __GFP_NOFAIL to kmem_getpages in slab.c to insure that 
kmalloc waits rather than return NULL. Also a too drastic measure right?

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