linux-kernel - [GIT PULL] hotfixes for 6.19-rc7

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Message-Id: <20260120131126.fcd6df1111d067948a8244c4@linux-foundation.org>
Date: Tue, 20 Jan 2026 13:11:26 -0800
From: Andrew Morton <akpm@...ux-foundation.org>
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: linux-mm@...ck.org, mm-commits@...r.kernel.org,
 linux-kernel@...r.kernel.org
Subject: [GIT PULL] hotfixes for 6.19-rc7


Linus, please merge this batch of hotfixes, thanks.


The following changes since commit 24d479d26b25bce5faea3ddd9fa8f3a6c3129ea7:

  Linux 6.19-rc6 (2026-01-18 15:42:45 -0800)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm tags/mm-hotfixes-stable-2026-01-20-13-09

for you to fetch changes up to 16aca2c98a6fdf071e5a1a765a295995d7c7e346:

  mm: restore per-memcg proactive reclaim with !CONFIG_NUMA (2026-01-20 09:34:27 -0800)

----------------------------------------------------------------
17 hotfixes.  12 are cc:stable, 16 are for MM.

- A 4 patch series from David Hildenbrand which fixes a few things
  realted to hugetlb PMD sharing

- The remainder are singletons, please see their changelogs for details.

----------------------------------------------------------------
Andrew Cooper (1):
      x86/kfence: avoid writing L1TF-vulnerable PTEs

Breno Leitao (1):
      mm/kfence: fix potential deadlock in reboot notifier

David Hildenbrand (Red Hat) (4):
      mm/hugetlb: fix hugetlb_pmd_shared()
      mm/hugetlb: fix two comments related to huge_pmd_unshare()
      mm/rmap: fix two comments related to huge_pmd_unshare()
      mm/hugetlb: fix excessive IPI broadcasts when unsharing PMD tables using mmu_gather

Gal Pressman (1):
      panic: only warn about deprecated panic_print on write access

Joanne Koong (1):
      fs/writeback: skip AS_NO_DATA_INTEGRITY mappings in wait_sb_inodes()

Lorenzo Stoakes (3):
      mm/vma: do not leak memory when .mmap_prepare swaps the file
      mm: remove unnecessary and incorrect mmap lock assert
      mm: do not copy page tables unnecessarily for VM_UFFD_WP

Mathieu Desnoyers (3):
      mm: add missing static initializer for init_mm::mm_cid.lock
      mm: rename cpu_bitmap field to flexible_array
      mm: take into account mm_cid size for mm_struct static definitions

Matthew Wilcox (Oracle) (1):
      migrate: correct lock ordering for hugetlb file folios

Suren Baghdasaryan (1):
      Docs/mm/allocation-profiling: describe sysctrl limitations in debug mode

Yosry Ahmed (1):
      mm: restore per-memcg proactive reclaim with !CONFIG_NUMA

 Documentation/admin-guide/sysctl/vm.rst   |   4 +
 Documentation/mm/allocation-profiling.rst |  10 +++
 arch/x86/include/asm/kfence.h             |  29 +++++--
 drivers/firmware/efi/efi.c                |   2 +-
 fs/fs-writeback.c                         |   7 +-
 fs/fuse/file.c                            |   4 +-
 include/asm-generic/tlb.h                 |  77 +++++++++++++++++-
 include/linux/hugetlb.h                   |  17 ++--
 include/linux/mm.h                        |   6 +-
 include/linux/mm_types.h                  |  19 +++--
 include/linux/pagemap.h                   |  11 +++
 kernel/panic.c                            |   4 +-
 mm/hugetlb.c                              | 131 ++++++++++++++++--------------
 mm/init-mm.c                              |   5 +-
 mm/internal.h                             |   8 --
 mm/kfence/core.c                          |  17 ++--
 mm/memory.c                               |  11 ++-
 mm/migrate.c                              |  12 +--
 mm/mmu_gather.c                           |  33 ++++++++
 mm/rmap.c                                 |  45 +++++-----
 mm/vma.c                                  |  11 ++-
 mm/vmscan.c                               |  13 ++-
 22 files changed, 341 insertions(+), 135 deletions(-)