[PATCH 0/9] mm, page_alloc: several stable fixes

[Vlastimil Babka (SUSE)]

A bunch of fixes from Josef, filtered for page allocator by David.

They seem worthy of Cc: stable to me, but IMHO don't need to be sent
urgently as the issues mostly need root actions (memory offline) to
trigger and/or CONFIG_DEBUG_VM to result in a denial of service.

I have tweaked some commit logs and a comment in one case.

Based on mm/mm-unstable.

Signed-off-by: Vlastimil Babka (SUSE) <vbabka@xxxxxxxxxx>
---
Josef Bacik (9):
      mm/page_alloc: don't undo a racing start_isolate_page_range()
      mm/page_alloc: clear ->private of deferred free pages
      mm: page_frag: refill the cache for large fragments
      mm/page_alloc: keep the pagesets of an empty zone
      mm, page_alloc: pass zone pointer to trace_reclaim_retry_zone
      mm/compaction: trust zone->contiguous only in the span
      mm: page_isolation: do not take slab pages for free
      mm/memory_hotplug: resize zones under their seqlock
      mm/page_alloc: check pageblock pfns under span seqlock

 include/trace/events/oom.h |  8 ++++----
 mm/memory_hotplug.c        | 51 +++++++++++++++++++++++++++++++---------------
 mm/mm_init.c               |  4 ++--
 mm/page_alloc.c            | 43 ++++++++++++++++++++++++++++++--------
 mm/page_alloc.h            |  7 ++++++-
 mm/page_frag_cache.c       | 21 +++++++++++--------
 mm/page_isolation.c        |  7 +++++++
 7 files changed, 101 insertions(+), 40 deletions(-)
---
base-commit: 39274b454e9993cea319f4ac342a8082a9ee1730
change-id: 20261027-pgalloc-ai-hotfixes-59bcd873a355