On 03/23/2016 05:44 AM, Joonsoo Kim wrote:

quoted

Fixes: 3c605096d315 ("mm/page_alloc: restrict max order of merging on isolated pageblock")
Link: https://lkml.org/lkml/2016/3/2/280
Reported-by: Hanjun Guo <guohanjun@huawei.com>
Debugged-by: Laura Abbott [off-list ref]
Debugged-by: Joonsoo Kim [off-list ref]
Signed-off-by: Vlastimil Babka <redacted>
Cc: <redacted> # 3.18+
---
  mm/page_alloc.c | 46 +++++++++++++++++++++++++++++++++-------------
  1 file changed, 33 insertions(+), 13 deletions(-)

Acked-by: Joonsoo Kim <redacted>

Thanks for taking care of this issue!.

Thanks for the review. But I'm now not sure whether we push this to 
mainline+stable now, and later replace with Lucas' approach, or whether 
that approach would be also suitable and non-disruptive enough for stable?