Re: swsusp: 8-order memory allocations problem (was: Re: Fix randomcrashes in x86-64 swsusp)

[Andrew Morton]

Pavel Machek <pavel@xxxxxxx> wrote:
>
> > It's sort of strange, because there were 250 meg of RAM available, out of 500, 
>  > at that time.
> 
>  Well, you have 250MB free, but apparently not enough contignuous free pages...
> 
>  You may try this one, it may reduce probability of this kind of
>  failure...

The chances of successfully finding 256 physically contiguous free
pages are small.  A shrink_all_memory() pass will help of course,
but the chances of failure are still quite high.

Dunno - maybe alloc_pagedir() should use vmalloc()?  That's a non-atomic
allocation but alloc_pagedir() really shouldn't be using GFP_ATOMIC anyway.
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