[PATCH 0/2] Drivers: hv: hv_balloon: avoid OOM killer on the ballooning path

[Vitaly Kuznetsov]

In some cases host asks us to overballoon and this triggers OOM killer which
eventually kills everyone. The easiest way to get into such situation is to
avoid onlining memory-hotplugged blocks. Address the issue twice:
- Report offline pages as used to the host so it won't ask us to overballoon;
- Avoid ballooning below the 'floor'.

Vitaly Kuznetsov (2):
  Drivers: hv: hv_balloon: report offline pages as being used
  Drivers: hv: hv_balloon: refuse to balloon below the floor

 drivers/hv/hv_balloon.c | 44 +++++++++++++++++++++++++++++++++++---------
 1 file changed, 35 insertions(+), 9 deletions(-)

-- 
1.9.3

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