Merge tag 'mm-stable-2026-02-18-19-48' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull more MM  updates from Andrew Morton:

 - "mm/vmscan: fix demotion targets checks in reclaim/demotion" fixes a
   couple of issues in the demotion code - pages were failed demotion
   and were finding themselves demoted into disallowed nodes (Bing Jiao)

 - "Remove XA_ZERO from error recovery of dup_mmap()" fixes a rare
   mapledtree race and performs a number of cleanups (Liam Howlett)

 - "mm: add bitmap VMA flag helpers and convert all mmap_prepare to use
   them" implements a lot of cleanups following on from the conversion
   of the VMA flags into a bitmap (Lorenzo Stoakes)

 - "support batch checking of references and unmapping for large folios"
   implements batching to greatly improve the performance of reclaiming
   clean file-backed large folios (Baolin Wang)

 - "selftests/mm: add memory failure selftests" does as claimed (Miaohe
   Lin)

* tag 'mm-stable-2026-02-18-19-48' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (36 commits)
  mm/page_alloc: clear page->private in free_pages_prepare()
  selftests/mm: add memory failure dirty pagecache test
  selftests/mm: add memory failure clean pagecache test
  selftests/mm: add memory failure anonymous page test
  mm: rmap: support batched unmapping for file large folios
  arm64: mm: implement the architecture-specific clear_flush_young_ptes()
  arm64: mm: support batch clearing of the young flag for large folios
  arm64: mm: factor out the address and ptep alignment into a new helper
  mm: rmap: support batched checks of the references for large folios
  tools/testing/vma: add VMA userland tests for VMA flag functions
  tools/testing/vma: separate out vma_internal.h into logical headers
  tools/testing/vma: separate VMA userland tests into separate files
  mm: make vm_area_desc utilise vma_flags_t only
  mm: update all remaining mmap_prepare users to use vma_flags_t
  mm: update shmem_[kernel]_file_*() functions to use vma_flags_t
  mm: update secretmem to use VMA flags on mmap_prepare
  mm: update hugetlbfs to use VMA flags on mmap_prepare
  mm: add basic VMA flag operation helper functions
  tools: bitmap: add missing bitmap_[subset(), andnot()]
  mm: add mk_vma_flags() bitmap flag macro helper
  ...

1 files changed, 5 insertions, 5 deletions

diff --git a/drivers/dax/device.c b/drivers/dax/device.c
index 22999a402e02..528e81240c4d 100644
--- a/drivers/dax/device.c
+++ b/drivers/dax/device.c
@@ -13,7 +13,7 @@
 #include "dax-private.h"
 #include "bus.h"
 
-static int __check_vma(struct dev_dax *dev_dax, vm_flags_t vm_flags,
+static int __check_vma(struct dev_dax *dev_dax, vma_flags_t flags,
 		       unsigned long start, unsigned long end, struct file *file,
 		       const char *func)
 {
@@ -24,7 +24,7 @@ static int __check_vma(struct dev_dax *dev_dax, vm_flags_t vm_flags,
 		return -ENXIO;
 
 	/* prevent private mappings from being established */
-	if ((vm_flags & VM_MAYSHARE) != VM_MAYSHARE) {
+	if (!vma_flags_test(&flags, VMA_MAYSHARE_BIT)) {
 		dev_info_ratelimited(dev,
 				"%s: %s: fail, attempted private mapping\n",
 				current->comm, func);
@@ -53,7 +53,7 @@ static int __check_vma(struct dev_dax *dev_dax, vm_flags_t vm_flags,
 static int check_vma(struct dev_dax *dev_dax, struct vm_area_struct *vma,
 		     const char *func)
 {
-	return __check_vma(dev_dax, vma->vm_flags, vma->vm_start, vma->vm_end,
+	return __check_vma(dev_dax, vma->flags, vma->vm_start, vma->vm_end,
 			   vma->vm_file, func);
 }
 
@@ -306,14 +306,14 @@ static int dax_mmap_prepare(struct vm_area_desc *desc)
 	 * fault time.
 	 */
 	id = dax_read_lock();
-	rc = __check_vma(dev_dax, desc->vm_flags, desc->start, desc->end, filp,
+	rc = __check_vma(dev_dax, desc->vma_flags, desc->start, desc->end, filp,
 			 __func__);
 	dax_read_unlock(id);
 	if (rc)
 		return rc;
 
 	desc->vm_ops = &dax_vm_ops;
-	desc->vm_flags |= VM_HUGEPAGE;
+	vma_desc_set_flags(desc, VMA_HUGEPAGE_BIT);
 	return 0;
 }