[PATCH 0/2] Fixes for hugetlb mapcount at most 1 for shared PMDs

[Mike Kravetz]

This issue of mapcount in hugetlb pages referenced by shared PMDs was
discussed in [1].  The following two patches address user visible
behavior caused by this issue.

Patches apply to mm-stable as they can also target stable backports.

Ongoing folio conversions cause context conflicts in the second patch
when applied to mm-unstable/linux-next.  I can create separate patch(es)
if people agree with these.

[1] https://lore.kernel.org/linux-mm/Y9BF+OCdWnCSilEu@monkey/
Mike Kravetz (2):
  mm: hugetlb: proc: check for hugetlb shared PMD in /proc/PID/smaps
  migrate: hugetlb: Check for hugetlb shared PMD in node migration

 fs/proc/task_mmu.c      | 10 ++++++++--
 include/linux/hugetlb.h | 12 ++++++++++++
 mm/mempolicy.c          |  3 ++-
 3 files changed, 22 insertions(+), 3 deletions(-)

-- 
2.39.1