# \[PATCH 08/13\] mm: convert miscellaneous VMA flag tests to use vma\_flags\_t

- From: Lorenzo Stoakes (ARM) \<ljs@kernel.org\>
- Date: 2026-11-05 21:34:00 
- List: linuxppc-dev
- Page: https://ratatoskr.run/linuxppc-dev/2026/11/17874204
- Thread: https://ratatoskr.run/linux-mm/2026/11/17874173/t.md

```text
Replace use of the legacy vm_flags_t flags with vma_flags_t values in the
remaining straightforward VMA flag tests scattered throughout core mm, HMM
(and its test module), DAMON and the OOM reaper.

No functional change intended.

Signed-off-by: Lorenzo Stoakes (ARM) <ljs@kernel.org>
---
 include/linux/mm_inline.h | 2 +-
 lib/test_hmm.c            | 4 ++--
 mm/damon/vaddr.c          | 2 +-
 mm/hmm.c                  | 6 +++---
 mm/internal.h             | 2 +-
 mm/mempolicy.c            | 4 ++--
 mm/mmap_lock.c            | 4 ++--
 mm/msync.c                | 4 ++--
 mm/oom_kill.c             | 4 ++--
 mm/pagewalk.c             | 2 +-
 mm/vma.h                  | 4 ++--
 11 files changed, 19 insertions(+), 19 deletions(-)

diff --git a/include/linux/mm_inline.h b/include/linux/mm_inline.h
index ab69b9930893..da04d81a819c 100644
--- a/include/linux/mm_inline.h
+++ b/include/linux/mm_inline.h
@@ -657,7 +657,7 @@ static inline pte_marker copy_pte_marker(
 
 static inline bool vma_has_recency(const struct vm_area_struct *vma)
 {
-	if (vma->vm_flags & (VM_SEQ_READ | VM_RAND_READ))
+	if (vma_test_any(vma, VMA_SEQ_READ_BIT, VMA_RAND_READ_BIT))
 		return false;
 
 	if (vma->vm_file && (vma->vm_file->f_mode & FMODE_NOREUSE))
diff --git a/lib/test_hmm.c b/lib/test_hmm.c
index b409c42bfe6f..d7702d99ac9b 100644
--- a/lib/test_hmm.c
+++ b/lib/test_hmm.c
@@ -1248,7 +1248,7 @@ static int dmirror_migrate_to_system(struct dmirror *dmirror,
 	mmap_read_lock(mm);
 	for (addr = start; addr < end; addr = next) {
 		vma = vma_lookup(mm, addr);
-		if (!vma || !(vma->vm_flags & VM_READ)) {
+		if (!vma || !vma_test(vma, VMA_READ_BIT)) {
 			ret = -EINVAL;
 			goto out;
 		}
@@ -1320,7 +1320,7 @@ static int dmirror_migrate_to_device(struct dmirror *dmirror,
 	mmap_read_lock(mm);
 	for (addr = start; addr < end; addr = next) {
 		vma = vma_lookup(mm, addr);
-		if (!vma || !(vma->vm_flags & VM_READ)) {
+		if (!vma || !vma_test(vma, VMA_READ_BIT)) {
 			ret = -EINVAL;
 			goto out;
 		}
diff --git a/mm/damon/vaddr.c b/mm/damon/vaddr.c
index b549496ea8e2..9a43f7428142 100644
--- a/mm/damon/vaddr.c
+++ b/mm/damon/vaddr.c
@@ -240,7 +240,7 @@ static void damon_va_walk_page_range(struct mm_struct *mm, unsigned long start,
 		goto lock_mmap;
 	}
 
-	if (!(vma->vm_flags & VM_PFNMAP)) {
+	if (!vma_test(vma, VMA_PFNMAP_BIT)) {
 		ops->walk_lock = PGWALK_VMA_RDLOCK_VERIFY;
 		walk_page_range_vma(vma, start, end, ops, private);
 	}
diff --git a/mm/hmm.c b/mm/hmm.c
index 2f1e98c6b644..058d0b48399a 100644
--- a/mm/hmm.c
+++ b/mm/hmm.c
@@ -595,8 +595,8 @@ static int hmm_vma_walk_test(unsigned long start, unsigned long end,
 	struct hmm_range *range = hmm_vma_walk->range;
 	struct vm_area_struct *vma = walk->vma;
 
-	if (!(vma->vm_flags & (VM_IO | VM_PFNMAP)) &&
-	    vma->vm_flags & VM_READ)
+	if (!vma_test_any(vma, VMA_IO_BIT, VMA_PFNMAP_BIT) &&
+	    vma_test(vma, VMA_READ_BIT))
 		return 0;
 
 	/*
@@ -659,7 +659,7 @@ static int hmm_do_fault(struct mm_struct *mm,
 		return -EFAULT;
 
 	if (required_fault & HMM_NEED_WRITE_FAULT) {
-		if (!(vma->vm_flags & VM_WRITE))
+		if (!vma_test(vma, VMA_WRITE_BIT))
 			return -EPERM;
 		fault_flags |= FAULT_FLAG_WRITE;
 	}
diff --git a/mm/internal.h b/mm/internal.h
index 8b1263e81054..cbb205f06097 100644
--- a/mm/internal.h
+++ b/mm/internal.h
@@ -1249,7 +1249,7 @@ size_t splice_folio_into_pipe(struct pipe_inode_info *pipe,
 
 static inline bool vma_is_single_threaded_private(struct vm_area_struct *vma)
 {
-	if (vma->vm_flags & VM_SHARED)
+	if (vma_test(vma, VMA_SHARED_BIT))
 		return false;
 
 	return atomic_read(&vma->vm_mm->mm_users) == 1;
diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index 80c693c6d693..31d42bcad529 100644
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -2015,7 +2015,7 @@ SYSCALL_DEFINE5(get_mempolicy, int __user *, policy,
 
 bool vma_migratable(struct vm_area_struct *vma)
 {
-	if (vma->vm_flags & (VM_IO | VM_PFNMAP))
+	if (vma_test_any(vma, VMA_IO_BIT, VMA_PFNMAP_BIT))
 		return false;
 
 	/*
@@ -2565,7 +2565,7 @@ struct folio *vma_alloc_folio_noprof(gfp_t gfp, int order, struct vm_area_struct
 	pgoff_t ilx;
 	struct folio *folio;
 
-	if (vma->vm_flags & VM_DROPPABLE)
+	if (vma_test_single_mask(vma, VMA_DROPPABLE))
 		gfp |= __GFP_NOWARN;
 
 	pol = get_vma_policy(vma, addr, order, &ilx);
diff --git a/mm/mmap_lock.c b/mm/mmap_lock.c
index 834bbf86e004..1b0560a4dfcd 100644
--- a/mm/mmap_lock.c
+++ b/mm/mmap_lock.c
@@ -636,7 +636,7 @@ struct vm_area_struct *lock_mm_and_find_vma(struct mm_struct *mm,
 	 * Well, dang. We might still be successful, but only
 	 * if we can extend a vma to do so.
 	 */
-	if (!vma || !(vma->vm_flags & VM_GROWSDOWN)) {
+	if (!vma || !vma_test(vma, VMA_GROWSDOWN_BIT)) {
 		mmap_read_unlock(mm);
 		return NULL;
 	}
@@ -659,7 +659,7 @@ struct vm_area_struct *lock_mm_and_find_vma(struct mm_struct *mm,
 			goto fail;
 		if (vma->vm_start <= addr)
 			goto success;
-		if (!(vma->vm_flags & VM_GROWSDOWN))
+		if (!vma_test(vma, VMA_GROWSDOWN_BIT))
 			goto fail;
 	}
 
diff --git a/mm/msync.c b/mm/msync.c
index 90b491a27a14..953efa1738c5 100644
--- a/mm/msync.c
+++ b/mm/msync.c
@@ -81,7 +81,7 @@ SYSCALL_DEFINE3(msync, unsigned long, start, size_t, len, int, flags)
 		}
 		/* Here vma->vm_start <= start < vma->vm_end. */
 		if ((flags & MS_INVALIDATE) &&
-				(vma->vm_flags & VM_LOCKED)) {
+				vma_test(vma, VMA_LOCKED_BIT)) {
 			error = -EBUSY;
 			goto out_unlock;
 		}
@@ -90,7 +90,7 @@ SYSCALL_DEFINE3(msync, unsigned long, start, size_t, len, int, flags)
 		fend = fstart + (min(end, vma->vm_end) - start) - 1;
 		start = vma->vm_end;
 		if ((flags & MS_SYNC) && file &&
-				(vma->vm_flags & VM_SHARED)) {
+				vma_test(vma, VMA_SHARED_BIT)) {
 			get_file(file);
 			mmap_read_unlock(mm);
 			error = vfs_fsync_range(file, fstart, fend, 1);
diff --git a/mm/oom_kill.c b/mm/oom_kill.c
index 5d48bd862c27..91b11299cb5d 100644
--- a/mm/oom_kill.c
+++ b/mm/oom_kill.c
@@ -524,7 +524,7 @@ static bool __oom_reap_task_mm(struct mm_struct *mm)
 	 * of the address space.
 	 */
 	mas_for_each_rev(&mas, vma, 0) {
-		if (vma->vm_flags & (VM_HUGETLB|VM_PFNMAP))
+		if (vma_test_any(vma, VMA_HUGETLB_BIT, VMA_PFNMAP_BIT))
 			continue;
 
 		/*
@@ -537,7 +537,7 @@ static bool __oom_reap_task_mm(struct mm_struct *mm)
 		 * we do not want to block exit_mmap by keeping mm ref
 		 * count elevated without a good reason.
 		 */
-		if (vma_is_anonymous(vma) || !(vma->vm_flags & VM_SHARED)) {
+		if (vma_is_anonymous(vma) || !vma_test(vma, VMA_SHARED_BIT)) {
 			if (zap_vma_for_reaping(vma))
 				ret = false;
 		}
diff --git a/mm/pagewalk.c b/mm/pagewalk.c
index e6493bbe6919..41e19f544493 100644
--- a/mm/pagewalk.c
+++ b/mm/pagewalk.c
@@ -393,7 +393,7 @@ static int walk_page_test(unsigned long start, unsigned long end,
 	 * define their ->pte_hole() callbacks, so let's delegate them to handle
 	 * vma(VM_PFNMAP).
 	 */
-	if (vma->vm_flags & VM_PFNMAP) {
+	if (vma_test(vma, VMA_PFNMAP_BIT)) {
 		int err = 1;
 		if (ops->pte_hole)
 			err = ops->pte_hole(start, end, -1, walk);
diff --git a/mm/vma.h b/mm/vma.h
index 3fc3b47a954b..201dbfe3d7f8 100644
--- a/mm/vma.h
+++ b/mm/vma.h
@@ -597,9 +597,9 @@ static inline bool vma_wants_manual_pte_write_upgrade(struct vm_area_struct *vma
 	 * private mappings, that's always the case when we have write
 	 * permissions as we properly have to handle COW.
 	 */
-	if (vma->vm_flags & VM_SHARED)
+	if (vma_test(vma, VMA_SHARED_BIT))
 		return vma_wants_writenotify(vma, vma->vm_page_prot);
-	return !!(vma->vm_flags & VM_WRITE);
+	return vma_test(vma, VMA_WRITE_BIT);
 }
 
 #ifdef CONFIG_MMU

-- 
2.56.0


```