Merge tag 'mm-stable-2026-02-11-19-22' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull MM updates from Andrew Morton:

 - "powerpc/64s: do not re-activate batched TLB flush" makes
   arch_{enter|leave}_lazy_mmu_mode() nest properly (Alexander Gordeev)

   It adds a generic enter/leave layer and switches architectures to use
   it. Various hacks were removed in the process.

 - "zram: introduce compressed data writeback" implements data
   compression for zram writeback (Richard Chang and Sergey Senozhatsky)

 - "mm: folio_zero_user: clear page ranges" adds clearing of contiguous
   page ranges for hugepages. Large improvements during demand faulting
   are demonstrated (David Hildenbrand)

 - "memcg cleanups" tidies up some memcg code (Chen Ridong)

 - "mm/damon: introduce {,max_}nr_snapshots and tracepoint for damos
   stats" improves DAMOS stat's provided information, deterministic
   control, and readability (SeongJae Park)

 - "selftests/mm: hugetlb cgroup charging: robustness fixes" fixes a few
   issues in the hugetlb cgroup charging selftests (Li Wang)

 - "Fix va_high_addr_switch.sh test failure - again" addresses several
   issues in the va_high_addr_switch test (Chunyu Hu)

 - "mm/damon/tests/core-kunit: extend existing test scenarios" improves
   the KUnit test coverage for DAMON (Shu Anzai)

 - "mm/khugepaged: fix dirty page handling for MADV_COLLAPSE" fixes a
   glitch in khugepaged which was causing madvise(MADV_COLLAPSE) to
   transiently return -EAGAIN (Shivank Garg)

 - "arch, mm: consolidate hugetlb early reservation" reworks and
   consolidates a pile of straggly code related to reservation of
   hugetlb memory from bootmem and creation of CMA areas for hugetlb
   (Mike Rapoport)

 - "mm: clean up anon_vma implementation" cleans up the anon_vma
   implementation in various ways (Lorenzo Stoakes)

 - "tweaks for __alloc_pages_slowpath()" does a little streamlining of
   the page allocator's slowpath code (Vlastimil Babka)

 - "memcg: separate private and public ID namespaces" cleans up the
   memcg ID code and prevents the internal-only private IDs from being
   exposed to userspace (Shakeel Butt)

 - "mm: hugetlb: allocate frozen gigantic folio" cleans up the
   allocation of frozen folios and avoids some atomic refcount
   operations (Kefeng Wang)

 - "mm/damon: advance DAMOS-based LRU sorting" improves DAMOS's movement
   of memory betewwn the active and inactive LRUs and adds auto-tuning
   of the ratio-based quotas and of monitoring intervals (SeongJae Park)

 - "Support page table check on PowerPC" makes
   CONFIG_PAGE_TABLE_CHECK_ENFORCED work on powerpc (Andrew Donnellan)

 - "nodemask: align nodes_and{,not} with underlying bitmap ops" makes
   nodes_and() and nodes_andnot() propagate the return values from the
   underlying bit operations, enabling some cleanup in calling code
   (Yury Norov)

 - "mm/damon: hide kdamond and kdamond_lock from API callers" cleans up
   some DAMON internal interfaces (SeongJae Park)

 - "mm/khugepaged: cleanups and scan limit fix" does some cleanup work
   in khupaged and fixes a scan limit accounting issue (Shivank Garg)

 - "mm: balloon infrastructure cleanups" goes to town on the balloon
   infrastructure and its page migration function. Mainly cleanups, also
   some locking simplification (David Hildenbrand)

 - "mm/vmscan: add tracepoint and reason for kswapd_failures reset" adds
   additional tracepoints to the page reclaim code (Jiayuan Chen)

 - "Replace wq users and add WQ_PERCPU to alloc_workqueue() users" is
   part of Marco's kernel-wide migration from the legacy workqueue APIs
   over to the preferred unbound workqueues (Marco Crivellari)

 - "Various mm kselftests improvements/fixes" provides various unrelated
   improvements/fixes for the mm kselftests (Kevin Brodsky)

 - "mm: accelerate gigantic folio allocation" greatly speeds up gigantic
   folio allocation, mainly by avoiding unnecessary work in
   pfn_range_valid_contig() (Kefeng Wang)

 - "selftests/damon: improve leak detection and wss estimation
   reliability" improves the reliability of two of the DAMON selftests
   (SeongJae Park)

 - "mm/damon: cleanup kdamond, damon_call(), damos filter and
   DAMON_MIN_REGION" does some cleanup work in the core DAMON code
   (SeongJae Park)

 - "Docs/mm/damon: update intro, modules, maintainer profile, and misc"
   performs maintenance work on the DAMON documentation (SeongJae Park)

 - "mm: add and use vma_assert_stabilised() helper" refactors and cleans
   up the core VMA code. The main aim here is to be able to use the mmap
   write lock's lockdep state to perform various assertions regarding
   the locking which the VMA code requires (Lorenzo Stoakes)

 - "mm, swap: swap table phase II: unify swapin use" removes some old
   swap code (swap cache bypassing and swap synchronization) which
   wasn't working very well. Various other cleanups and simplifications
   were made. The end result is a 20% speedup in one benchmark (Kairui
   Song)

 - "enable PT_RECLAIM on more 64-bit architectures" makes PT_RECLAIM
   available on 64-bit alpha, loongarch, mips, parisc, and um. Various
   cleanups were performed along the way (Qi Zheng)

* tag 'mm-stable-2026-02-11-19-22' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (325 commits)
  mm/memory: handle non-split locks correctly in zap_empty_pte_table()
  mm: move pte table reclaim code to memory.c
  mm: make PT_RECLAIM depends on MMU_GATHER_RCU_TABLE_FREE
  mm: convert __HAVE_ARCH_TLB_REMOVE_TABLE to CONFIG_HAVE_ARCH_TLB_REMOVE_TABLE config
  um: mm: enable MMU_GATHER_RCU_TABLE_FREE
  parisc: mm: enable MMU_GATHER_RCU_TABLE_FREE
  mips: mm: enable MMU_GATHER_RCU_TABLE_FREE
  LoongArch: mm: enable MMU_GATHER_RCU_TABLE_FREE
  alpha: mm: enable MMU_GATHER_RCU_TABLE_FREE
  mm: change mm/pt_reclaim.c to use asm/tlb.h instead of asm-generic/tlb.h
  mm/damon/stat: remove __read_mostly from memory_idle_ms_percentiles
  zsmalloc: make common caches global
  mm: add SPDX id lines to some mm source files
  mm/zswap: use %pe to print error pointers
  mm/vmscan: use %pe to print error pointers
  mm/readahead: fix typo in comment
  mm: khugepaged: fix NR_FILE_PAGES and NR_SHMEM in collapse_file()
  mm: refactor vma_map_pages to use vm_insert_pages
  mm/damon: unify address range representation with damon_addr_range
  mm/cma: replace snprintf with strscpy in cma_new_area
  ...

4 files changed, 27 insertions, 66 deletions

diff --git a/arch/arm64/include/asm/hugetlb.h b/arch/arm64/include/asm/hugetlb.h
index 44c1f757bfcf..e6f8ff3cc630 100644
--- a/arch/arm64/include/asm/hugetlb.h
+++ b/arch/arm64/include/asm/hugetlb.h
@@ -56,8 +56,6 @@ extern void huge_pte_clear(struct mm_struct *mm, unsigned long addr,
 #define __HAVE_ARCH_HUGE_PTEP_GET
 extern pte_t huge_ptep_get(struct mm_struct *mm, unsigned long addr, pte_t *ptep);
 
-void __init arm64_hugetlb_cma_reserve(void);
-
 #define huge_ptep_modify_prot_start huge_ptep_modify_prot_start
 extern pte_t huge_ptep_modify_prot_start(struct vm_area_struct *vma,
 					 unsigned long addr, pte_t *ptep);
diff --git a/arch/arm64/include/asm/page.h b/arch/arm64/include/asm/page.h
index 00f117ff4f7a..b39cc1127e1f 100644
--- a/arch/arm64/include/asm/page.h
+++ b/arch/arm64/include/asm/page.h
@@ -36,7 +36,6 @@ struct folio *vma_alloc_zeroed_movable_folio(struct vm_area_struct *vma,
 bool tag_clear_highpages(struct page *to, int numpages);
 #define __HAVE_ARCH_TAG_CLEAR_HIGHPAGES
 
-#define clear_user_page(page, vaddr, pg)	clear_page(page)
 #define copy_user_page(to, from, vaddr, pg)	copy_page(to, from)
 
 typedef struct page *pgtable_t;
diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h
index 64d5f1d9cce9..d94445b4f3df 100644
--- a/arch/arm64/include/asm/pgtable.h
+++ b/arch/arm64/include/asm/pgtable.h
@@ -62,61 +62,26 @@ static inline void emit_pte_barriers(void)
 
 static inline void queue_pte_barriers(void)
 {
-	unsigned long flags;
-
-	if (in_interrupt()) {
-		emit_pte_barriers();
-		return;
-	}
-
-	flags = read_thread_flags();
-
-	if (flags & BIT(TIF_LAZY_MMU)) {
+	if (is_lazy_mmu_mode_active()) {
 		/* Avoid the atomic op if already set. */
-		if (!(flags & BIT(TIF_LAZY_MMU_PENDING)))
+		if (!test_thread_flag(TIF_LAZY_MMU_PENDING))
 			set_thread_flag(TIF_LAZY_MMU_PENDING);
 	} else {
 		emit_pte_barriers();
 	}
 }
 
-#define  __HAVE_ARCH_ENTER_LAZY_MMU_MODE
-static inline void arch_enter_lazy_mmu_mode(void)
-{
-	/*
-	 * lazy_mmu_mode is not supposed to permit nesting. But in practice this
-	 * does happen with CONFIG_DEBUG_PAGEALLOC, where a page allocation
-	 * inside a lazy_mmu_mode section (such as zap_pte_range()) will change
-	 * permissions on the linear map with apply_to_page_range(), which
-	 * re-enters lazy_mmu_mode. So we tolerate nesting in our
-	 * implementation. The first call to arch_leave_lazy_mmu_mode() will
-	 * flush and clear the flag such that the remainder of the work in the
-	 * outer nest behaves as if outside of lazy mmu mode. This is safe and
-	 * keeps tracking simple.
-	 */
-
-	if (in_interrupt())
-		return;
-
-	set_thread_flag(TIF_LAZY_MMU);
-}
+static inline void arch_enter_lazy_mmu_mode(void) {}
 
 static inline void arch_flush_lazy_mmu_mode(void)
 {
-	if (in_interrupt())
-		return;
-
 	if (test_and_clear_thread_flag(TIF_LAZY_MMU_PENDING))
 		emit_pte_barriers();
 }
 
 static inline void arch_leave_lazy_mmu_mode(void)
 {
-	if (in_interrupt())
-		return;
-
 	arch_flush_lazy_mmu_mode();
-	clear_thread_flag(TIF_LAZY_MMU);
 }
 
 #ifdef CONFIG_TRANSPARENT_HUGEPAGE
@@ -708,22 +673,24 @@ static inline pgprot_t pud_pgprot(pud_t pud)
 	return __pgprot(pud_val(pfn_pud(pfn, __pgprot(0))) ^ pud_val(pud));
 }
 
-static inline void __set_ptes_anysz(struct mm_struct *mm, pte_t *ptep,
-				    pte_t pte, unsigned int nr,
+static inline void __set_ptes_anysz(struct mm_struct *mm, unsigned long addr,
+				    pte_t *ptep, pte_t pte, unsigned int nr,
 				    unsigned long pgsize)
 {
 	unsigned long stride = pgsize >> PAGE_SHIFT;
 
 	switch (pgsize) {
 	case PAGE_SIZE:
-		page_table_check_ptes_set(mm, ptep, pte, nr);
+		page_table_check_ptes_set(mm, addr, ptep, pte, nr);
 		break;
 	case PMD_SIZE:
-		page_table_check_pmds_set(mm, (pmd_t *)ptep, pte_pmd(pte), nr);
+		page_table_check_pmds_set(mm, addr, (pmd_t *)ptep,
+					  pte_pmd(pte), nr);
 		break;
 #ifndef __PAGETABLE_PMD_FOLDED
 	case PUD_SIZE:
-		page_table_check_puds_set(mm, (pud_t *)ptep, pte_pud(pte), nr);
+		page_table_check_puds_set(mm, addr, (pud_t *)ptep,
+					  pte_pud(pte), nr);
 		break;
 #endif
 	default:
@@ -744,26 +711,23 @@ static inline void __set_ptes_anysz(struct mm_struct *mm, pte_t *ptep,
 	__set_pte_complete(pte);
 }
 
-static inline void __set_ptes(struct mm_struct *mm,
-			      unsigned long __always_unused addr,
+static inline void __set_ptes(struct mm_struct *mm, unsigned long addr,
 			      pte_t *ptep, pte_t pte, unsigned int nr)
 {
-	__set_ptes_anysz(mm, ptep, pte, nr, PAGE_SIZE);
+	__set_ptes_anysz(mm, addr, ptep, pte, nr, PAGE_SIZE);
 }
 
-static inline void __set_pmds(struct mm_struct *mm,
-			      unsigned long __always_unused addr,
+static inline void __set_pmds(struct mm_struct *mm, unsigned long addr,
 			      pmd_t *pmdp, pmd_t pmd, unsigned int nr)
 {
-	__set_ptes_anysz(mm, (pte_t *)pmdp, pmd_pte(pmd), nr, PMD_SIZE);
+	__set_ptes_anysz(mm, addr, (pte_t *)pmdp, pmd_pte(pmd), nr, PMD_SIZE);
 }
 #define set_pmd_at(mm, addr, pmdp, pmd) __set_pmds(mm, addr, pmdp, pmd, 1)
 
-static inline void __set_puds(struct mm_struct *mm,
-			      unsigned long __always_unused addr,
+static inline void __set_puds(struct mm_struct *mm, unsigned long addr,
 			      pud_t *pudp, pud_t pud, unsigned int nr)
 {
-	__set_ptes_anysz(mm, (pte_t *)pudp, pud_pte(pud), nr, PUD_SIZE);
+	__set_ptes_anysz(mm, addr, (pte_t *)pudp, pud_pte(pud), nr, PUD_SIZE);
 }
 #define set_pud_at(mm, addr, pudp, pud) __set_puds(mm, addr, pudp, pud, 1)
 
@@ -1301,17 +1265,17 @@ static inline int pmdp_set_access_flags(struct vm_area_struct *vma,
 #endif
 
 #ifdef CONFIG_PAGE_TABLE_CHECK
-static inline bool pte_user_accessible_page(pte_t pte)
+static inline bool pte_user_accessible_page(pte_t pte, unsigned long addr)
 {
 	return pte_valid(pte) && (pte_user(pte) || pte_user_exec(pte));
 }
 
-static inline bool pmd_user_accessible_page(pmd_t pmd)
+static inline bool pmd_user_accessible_page(pmd_t pmd, unsigned long addr)
 {
 	return pmd_valid(pmd) && !pmd_table(pmd) && (pmd_user(pmd) || pmd_user_exec(pmd));
 }
 
-static inline bool pud_user_accessible_page(pud_t pud)
+static inline bool pud_user_accessible_page(pud_t pud, unsigned long addr)
 {
 	return pud_valid(pud) && !pud_table(pud) && (pud_user(pud) || pud_user_exec(pud));
 }
@@ -1370,6 +1334,7 @@ static inline int pmdp_test_and_clear_young(struct vm_area_struct *vma,
 #endif /* CONFIG_TRANSPARENT_HUGEPAGE || CONFIG_ARCH_HAS_NONLEAF_PMD_YOUNG */
 
 static inline pte_t __ptep_get_and_clear_anysz(struct mm_struct *mm,
+					       unsigned long address,
 					       pte_t *ptep,
 					       unsigned long pgsize)
 {
@@ -1377,14 +1342,14 @@ static inline pte_t __ptep_get_and_clear_anysz(struct mm_struct *mm,
 
 	switch (pgsize) {
 	case PAGE_SIZE:
-		page_table_check_pte_clear(mm, pte);
+		page_table_check_pte_clear(mm, address, pte);
 		break;
 	case PMD_SIZE:
-		page_table_check_pmd_clear(mm, pte_pmd(pte));
+		page_table_check_pmd_clear(mm, address, pte_pmd(pte));
 		break;
 #ifndef __PAGETABLE_PMD_FOLDED
 	case PUD_SIZE:
-		page_table_check_pud_clear(mm, pte_pud(pte));
+		page_table_check_pud_clear(mm, address, pte_pud(pte));
 		break;
 #endif
 	default:
@@ -1397,7 +1362,7 @@ static inline pte_t __ptep_get_and_clear_anysz(struct mm_struct *mm,
 static inline pte_t __ptep_get_and_clear(struct mm_struct *mm,
 				       unsigned long address, pte_t *ptep)
 {
-	return __ptep_get_and_clear_anysz(mm, ptep, PAGE_SIZE);
+	return __ptep_get_and_clear_anysz(mm, address, ptep, PAGE_SIZE);
 }
 
 static inline void __clear_full_ptes(struct mm_struct *mm, unsigned long addr,
@@ -1436,7 +1401,7 @@ static inline pte_t __get_and_clear_full_ptes(struct mm_struct *mm,
 static inline pmd_t pmdp_huge_get_and_clear(struct mm_struct *mm,
 					    unsigned long address, pmd_t *pmdp)
 {
-	return pte_pmd(__ptep_get_and_clear_anysz(mm, (pte_t *)pmdp, PMD_SIZE));
+	return pte_pmd(__ptep_get_and_clear_anysz(mm, address, (pte_t *)pmdp, PMD_SIZE));
 }
 #endif /* CONFIG_TRANSPARENT_HUGEPAGE */
 
@@ -1525,7 +1490,7 @@ static inline void pmdp_set_wrprotect(struct mm_struct *mm,
 static inline pmd_t pmdp_establish(struct vm_area_struct *vma,
 		unsigned long address, pmd_t *pmdp, pmd_t pmd)
 {
-	page_table_check_pmd_set(vma->vm_mm, pmdp, pmd);
+	page_table_check_pmd_set(vma->vm_mm, address, pmdp, pmd);
 	return __pmd(xchg_relaxed(&pmd_val(*pmdp), pmd_val(pmd)));
 }
 #endif
diff --git a/arch/arm64/include/asm/thread_info.h b/arch/arm64/include/asm/thread_info.h
index 24fcd6adaa33..7942478e4065 100644
--- a/arch/arm64/include/asm/thread_info.h
+++ b/arch/arm64/include/asm/thread_info.h
@@ -84,8 +84,7 @@ void arch_setup_new_exec(void);
 #define TIF_SME_VL_INHERIT	28	/* Inherit SME vl_onexec across exec */
 #define TIF_KERNEL_FPSTATE	29	/* Task is in a kernel mode FPSIMD section */
 #define TIF_TSC_SIGSEGV		30	/* SIGSEGV on counter-timer access */
-#define TIF_LAZY_MMU		31	/* Task in lazy mmu mode */
-#define TIF_LAZY_MMU_PENDING	32	/* Ops pending for lazy mmu mode exit */
+#define TIF_LAZY_MMU_PENDING	31	/* Ops pending for lazy mmu mode exit */
 
 #define _TIF_SIGPENDING		(1 << TIF_SIGPENDING)
 #define _TIF_NEED_RESCHED	(1 << TIF_NEED_RESCHED)