# \[PATCH 10/13\] fs/coredump: convert vma\_dump\_size() to use vma\_flags\_t

- From: Lorenzo Stoakes (ARM) \<ljs@kernel.org\>
- Date: 2026-11-05 21:34:40 
- List: linuxppc-dev
- Page: https://ratatoskr.run/linuxppc-dev/2026/11/17874208
- 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 when
determining how much of a VMA to dump.

The flags copied into struct core_vma_metadata remain legacy flags as they
are consumed by the binfmt handlers.

No functional change intended.

Signed-off-by: Lorenzo Stoakes (ARM) <ljs@kernel.org>
---
 fs/coredump.c | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/fs/coredump.c b/fs/coredump.c
index b25ef2ffbdee..6ebc04421b91 100644
--- a/fs/coredump.c
+++ b/fs/coredump.c
@@ -1835,15 +1835,15 @@ static unsigned long vma_dump_size(struct vm_area_struct *vma,
 	if (always_dump_vma(vma))
 		goto whole;
 
-	if (vma->vm_flags & VM_DONTDUMP)
+	if (vma_test(vma, VMA_DONTDUMP_BIT))
 		return 0;
 
 	/* support for DAX */
 	if (vma_is_dax(vma)) {
-		if ((vma->vm_flags & VM_SHARED) &&
+		if (vma_test(vma, VMA_SHARED_BIT) &&
 		    COREDUMP_MEMORY_TYPE_INCLUDE(memory_types, DAX_SHARED))
 			goto whole;
-		if (!(vma->vm_flags & VM_SHARED) &&
+		if (!vma_test(vma, VMA_SHARED_BIT) &&
 		    COREDUMP_MEMORY_TYPE_INCLUDE(memory_types, DAX_PRIVATE))
 			goto whole;
 		return 0;
@@ -1851,21 +1851,21 @@ static unsigned long vma_dump_size(struct vm_area_struct *vma,
 
 	/* Hugetlb memory check */
 	if (vma_is_hugetlb(vma)) {
-		if ((vma->vm_flags & VM_SHARED) &&
+		if (vma_test(vma, VMA_SHARED_BIT) &&
 		    COREDUMP_MEMORY_TYPE_INCLUDE(memory_types, HUGETLB_SHARED))
 			goto whole;
-		if (!(vma->vm_flags & VM_SHARED) &&
+		if (!vma_test(vma, VMA_SHARED_BIT) &&
 		    COREDUMP_MEMORY_TYPE_INCLUDE(memory_types, HUGETLB_PRIVATE))
 			goto whole;
 		return 0;
 	}
 
 	/* Do not dump I/O mapped devices or special mappings */
-	if (vma->vm_flags & VM_IO)
+	if (vma_test(vma, VMA_IO_BIT))
 		return 0;
 
 	/* By default, dump shared memory if mapped from an anonymous file. */
-	if (vma->vm_flags & VM_SHARED) {
+	if (vma_test(vma, VMA_SHARED_BIT)) {
 		if (file_inode(vma->vm_file)->i_nlink == 0 ?
 			    COREDUMP_MEMORY_TYPE_INCLUDE(memory_types, ANON_SHARED) :
 			    COREDUMP_MEMORY_TYPE_INCLUDE(memory_types, FILE_SHARED))
@@ -1888,7 +1888,7 @@ static unsigned long vma_dump_size(struct vm_area_struct *vma,
 	 * dump the first page to aid in determining what was mapped here.
 	 */
 	if (COREDUMP_MEMORY_TYPE_INCLUDE(memory_types, ELF_HEADERS) &&
-	    vma->vm_pgoff == 0 && (vma->vm_flags & VM_READ)) {
+	    vma->vm_pgoff == 0 && vma_test(vma, VMA_READ_BIT)) {
 		if ((READ_ONCE(file_inode(vma->vm_file)->i_mode) & 0111) != 0)
 			return PAGE_SIZE;
 

-- 
2.56.0


```