Merge tag 'mm-hotfixes-stable-2026-01-20-13-09' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull misc fixes from Andrew Morton:

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

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

* tag 'mm-hotfixes-stable-2026-01-20-13-09' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
  mm: restore per-memcg proactive reclaim with !CONFIG_NUMA
  mm/kfence: fix potential deadlock in reboot notifier
  Docs/mm/allocation-profiling: describe sysctrl limitations in debug mode
  mm: do not copy page tables unnecessarily for VM_UFFD_WP
  mm/hugetlb: fix excessive IPI broadcasts when unsharing PMD tables using mmu_gather
  mm/rmap: fix two comments related to huge_pmd_unshare()
  mm/hugetlb: fix two comments related to huge_pmd_unshare()
  mm/hugetlb: fix hugetlb_pmd_shared()
  mm: remove unnecessary and incorrect mmap lock assert
  x86/kfence: avoid writing L1TF-vulnerable PTEs
  mm/vma: do not leak memory when .mmap_prepare swaps the file
  migrate: correct lock ordering for hugetlb file folios
  panic: only warn about deprecated panic_print on write access
  fs/writeback: skip AS_NO_DATA_INTEGRITY mappings in wait_sb_inodes()
  mm: take into account mm_cid size for mm_struct static definitions
  mm: rename cpu_bitmap field to flexible_array
  mm: add missing static initializer for init_mm::mm_cid.lock

1 files changed, 2 insertions, 2 deletions

diff --git a/kernel/panic.c b/kernel/panic.c
index 0d52210a9e2b..0c20fcaae98a 100644
--- a/kernel/panic.c
+++ b/kernel/panic.c
@@ -131,7 +131,8 @@ static int proc_taint(const struct ctl_table *table, int write,
 static int sysctl_panic_print_handler(const struct ctl_table *table, int write,
 			   void *buffer, size_t *lenp, loff_t *ppos)
 {
-	panic_print_deprecated();
+	if (write)
+		panic_print_deprecated();
 	return proc_doulongvec_minmax(table, write, buffer, lenp, ppos);
 }
 
@@ -1014,7 +1015,6 @@ static int panic_print_set(const char *val, const struct kernel_param *kp)
 
 static int panic_print_get(char *val, const struct kernel_param *kp)
 {
-	panic_print_deprecated();
 	return  param_get_ulong(val, kp);
 }