Re: [PATCH v3 03/13] mm: add vma_desc_size(), vma_desc_pages() helpers

Jason Gunthorpe
2025-09-16T16:46:42Z

On Tue, Sep 16, 2025 at 03:11:49PM +0100, Lorenzo Stoakes wrote:
> It's useful to be able to determine the size of a VMA descriptor range
> used on f_op->mmap_prepare, expressed both in bytes and pages, so add
> helpers for both and update code that could make use of it to do so.
>
> Signed-off-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
> Reviewed-by: Jan Kara <jack@suse.cz>
> Acked-by: David Hildenbrand <david@redhat.com>
> ---
> fs/ntfs3/file.c | 2 +-
> include/linux/mm.h | 10 ++++++++++
> mm/secretmem.c | 2 +-
> 3 files changed, 12 insertions(+), 2 deletions(-)

Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>

Jason