Re: [PATCH] Permit inode & dentry hash tables to be allocated >MAX_ORDER size

[Andi Kleen]

"Martin J. Bligh" <mbligh@xxxxxxxxxxx> writes:
>
> Allocating the big-assed hashes out of bootmem seems much cleaner to me,
> at least ...

Machines big enough that such big hashes make sense are probably NUMA.
And on NUMA systems you imho should rather use node interleaving vmalloc(),
not a bit physical allocation on a specific node for these hashes. 
This will avoid memory controller hot spots and avoid the problem completely.
Likely it will perform better too.

-Andi

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