Some time ago Petr once reproduced a false positive VM_BUG_ON in
khugepaged while running the autonuma-benchmark on a large 8 node
system. All production kernels out there have DEBUG_VM=n so it was
only noticeable on self built kernels. It's not easily reproducible
even on the 8 nodes system.
This patch removes the false positive and it has been tested for a
while and it's good idea to queue it for upstream too. It's not urgent
and probably not worth it for -stable, though it wouldn't hurt. On
smaller systems it's not reproducible AFIK.
Andrea Arcangeli (1):
thp: avoid VM_BUG_ON page_count(page) false positives in
__collapse_huge_page_copy
mm/huge_memory.c | 19 ++++++++++++++++++-
1 files changed, 18 insertions(+), 1 deletions(-)
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