diff mbox series

[2/6] mm: for !CONFIG_PER_VMA_LOCK equate write lock assertion for vma and mmap

Message ID 20230731171233.1098105-3-surenb@google.com
State New
Headers
Series make vma locking more obvious |

Commit Message

Suren Baghdasaryan July 31, 2023, 5:12 p.m. UTC 
  When CONFIG_PER_VMA_LOCK=n, vma_assert_write_locked() should be equivalent
to mmap_assert_write_locked().

Suggested-by: Jann Horn <jannh@google.com>
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
---
 include/linux/mm.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/include/linux/mm.h b/include/linux/mm.h
index 406ab9ea818f..262b5f44101d 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -750,7 +750,8 @@  static inline void vma_end_read(struct vm_area_struct *vma) {}
 static inline void vma_start_write(struct vm_area_struct *vma) {}
 static inline bool vma_try_start_write(struct vm_area_struct *vma)
 		{ return true; }
-static inline void vma_assert_write_locked(struct vm_area_struct *vma) {}
+static inline void vma_assert_write_locked(struct vm_area_struct *vma)
+		{ mmap_assert_write_locked(vma->vm_mm); }
 static inline void vma_mark_detached(struct vm_area_struct *vma,
 				     bool detached) {}