On Mon, 23 Jul 2007 15:41:36 -0700 (PDT)
Linus Torvalds <[email protected]> wrote:
>
>
> On Mon, 23 Jul 2007, Andrew Morton wrote:
> >
> > OK, well that was weird. So
> >
> > kmalloc(42, GFP_KERNEL|__GFP_ZERO);
> >
> > duplicates
> >
> > kzalloc(42, GFP_KERNEL);
> >
> > Why do it both ways?
>
> Both ways? The latter *is* the former. That's how kzalloc() is implemented
> these days.
<looks>
So this:
/*
* Be lazy and only check for valid flags here, keeping it out of the
* critical path in kmem_cache_alloc().
*/
BUG_ON(flags & ~(GFP_DMA | __GFP_ZERO | GFP_LEVEL_MASK));
would no longer need the __GFP_ZERO. Ditto in slob's new_slab().
> Andrew - all these patches came through you. You didn't realize?
Well. I didn't memorise the past few months' 250-odd slab/slob/slub
patches..
My point is, I don't think we want some code doing
kmalloc(42, GFP_KERNEL|__GFP_ZERO) and some other code doing
kzalloc(42, GFP_KERNEL). But this patch does nothing to increase the
chances of that happening, so I'm happy.
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