Re: [PATCH 1/3] Fix hugetlb pool allocation with empty nodes

[Nishanth Aravamudan <nacc@us.ibm.com>]

On 18.06.2007 [10:34:28 -0700], Nishanth Aravamudan wrote:
> Anton found a problem with the hugetlb pool allocation when some nodes
> have no memory (http://marc.info/?l=linux-mm&m=118133042025995&w=2). Lee
> worked on versions that tried to fix it, but none were accepted.
> Christoph has created a set of patches which allow for GFP_THISNODE
> allocations to fail if the node has no memory and for exporting a
> node_memory_map indicating which nodes have memory. Since mempolicy.c
> already has a number of functions which support interleaving, create a
> mempolicy when we invoke alloc_fresh_huge_page() that specifies
> interleaving across all the nodes in node_memory_map, rather than custom
> interleaving code in hugetlb.c.  This requires adding some dummy
> functions, and some declarations, in mempolicy.h to compile with NUMA or
> !NUMA.

Sigh, in case it wasn't clear from the preceding dicussions, these
patches depend on Christoph's memoryless node fixes.

Thanks,
Nish

-- 
Nishanth Aravamudan <nacc@us.ibm.com>
IBM Linux Technology Center

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