[PATCH v2 5.15 0/2] mm: replace free hugepage folios after migration

[Mark Bundschuh <mkbund@amazon.com>]

Full backport of 04f13d241b8b ("mm: replace free hugepage folios after
migration") with its fix 113ed54ad276.

Tested in a VM on 5.15.224: memory offline of a block with mapped huge
pages no longer livelocks, and cma_alloc() over mapped huge pages now
succeeds (it failed on 5.15.224 and with v1).

v1: https://lore.kernel.org/all/20261105070206.3094675-1-mkbund@amazon.com/

Ge Yang (1):
  mm/hugetlb: fix kernel NULL pointer dereference when replacing free
    hugetlb folios

yangge (1):
  mm: replace free hugepage folios after migration

 include/linux/hugetlb.h |  7 ++++++
 mm/hugetlb.c            | 49 +++++++++++++++++++++++++++++++++++++++++
 mm/page_alloc.c         | 12 +++++++++-
 3 files changed, 67 insertions(+), 1 deletion(-)

-- 
2.50.1