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Fixes for NUMA allocations on memoryless nodes

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  1. v1 Latest3 patches 36 repliesIn review

Patches in v1 No applies recorded yet

#Subject and filesSizeRepliesApplied
1/3NUMA: introduce node_memory_mapinclude/linux/nodemask.h mm/page_alloc.c+17 -014 replies
2/3Fix GFP_THISNODE behavior for memoryless nodesinclude/linux/gfp.h+7 -022 replies
3/3Fix MPOL_INTERLEAVE behavior for memoryless nodesmm/mempolicy.c+2 -10 replies

Reviews trailers per patch

1 of 3 patches has a Reviewed-by or Acked-by.

PatchDavid RientjesNishanth Aravamudan
1/3
2/3A-b A-b
3/3

Trailers given in replies are filled; those carried in the patches from earlier versions are outlined with dashes.

Read the v1 thread

Cover letter [patch 0/3] Fixes for NUMA allocations on memoryless nodes

This patchset fixes the dysfunctional behavior of for GFP_THISNODE and MPOL_INTERLEAVE on systems with memoryless nodes. We introduce a new "node_memory_map" to be able to determine efficiently if a node has memory.

Tested on IA64 NUMA and compile tested on i386 SMP (to verify that the new fallbacks work right)

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