[patch 0/5] sparse-vmemmap: hotplug fixes & cleanups

[Johannes Weiner]

Hotplug can happen at times when the memory situation is less than
perfect to allocate huge pages for the vmemmap.  This series makes the
allocation try harder in patch #1.  The remaining patches allow x86-64
to fall back to regular pages as a last resort before the hotplug
event fails completely.  As a prerequisite to this, the arch interface
to sparse is cleaned up a little, which should also enable other
architectures to easily mix huge and regular pages in the vmemmap.

 arch/arm64/mm/mmu.c       | 13 +++++--------
 arch/ia64/mm/discontig.c  |  7 +++----
 arch/powerpc/mm/init_64.c | 11 +++--------
 arch/s390/mm/vmem.c       | 13 +++++--------
 arch/sparc/mm/init_64.c   |  7 +++----
 arch/x86/mm/init_64.c     | 68 ++++++++++++++++++++++++++++++++------------------------------------
 include/linux/mm.h        |  8 ++++----
 mm/sparse-vmemmap.c       | 27 +++++++++++++++++----------
 mm/sparse.c               | 10 ++++++++--
 9 files changed, 80 insertions(+), 84 deletions(-)

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