Re: [PATCH v2 1/6] mm: introduce vma->vm_flags modifier functions

On Wed, Jan 25, 2023 at 12:38:46AM -0800, Suren Baghdasaryan wrote:

diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h index 2d6d790d9bed..6c7c70bf50dd 100644 --- a/include/linux/mm_types.h +++ b/include/linux/mm_types.h @@ -491,7 +491,13 @@ struct vm_area_struct { * See vmf_insert_mixed_prot() for discussion. */ pgprot_t vm_page_prot;

• unsigned long vm_flags; /* Flags, see mm.h. */

• /*

• * Flags, see mm.h.
  

• * WARNING! Do not modify directly.
  

• * Use {init|reset|set|clear|mod}_vm_flags() functions instead.
  

• */
  

• unsigned long vm_flags;

We have __private and ACCESS_PRIVATE() to help with enforcing this.