Re: [PATCH 4/5] mm/madvise: thread all madvise state through madv_behavior

[Zi Yan <ziy@nvidia.com>]

On 19 Jun 2025, at 16:26, Lorenzo Stoakes wrote:

> Doing so means we can get rid of all the weird struct vm_area_struct **prev
> stuff, everything becomes consistent and in future if we want to make
> change to behaviour there's a single place where all relevant state is
> stored.
>
> This also allows us to update try_vma_read_lock() to be a little more
> succinct and set up state for us, as well as cleaning up
> madvise_update_vma().
>
> We also update the debug assertion prior to madvise_update_vma() to assert
> that this is a write operation as correctly pointed out by Barry in the
> relevant thread.
>
> We can't reasonably update the madvise functions that live outside of
> mm/madvise.c so we leave those as-is.
>
> Signed-off-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
> ---
>  mm/madvise.c | 283 ++++++++++++++++++++++++++-------------------------
>  1 file changed, 146 insertions(+), 137 deletions(-)
>

Acked-by: Zi Yan <ziy@nvidia.com>

--
Best Regards,
Yan, Zi