As discussed last week with Michal Hocko, I am sending this as a separate
patch:
https://www.mail-archive.com/[email protected]/msg1528267.html

This patch farther improves deferred page initialization by enabling future
mult-threading, covering some corner cases, and simplifies the logic and
modularity.

Tested with qemu, and on bare metal with kexec, and regular reboots.

Pavel Tatashin (1):
  mm: split deferred_init_range into initializing and freeing parts

 mm/page_alloc.c | 146 +++++++++++++++++++++++++++++---------------------------
 1 file changed, 76 insertions(+), 70 deletions(-)

-- 
2.15.0

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