Re: [PATCH 14/30] mm/vma: minor cleanup of expand_[upwards, downwards]()

On Mon, Jun 29, 2026 at 01:23:25PM +0100, Lorenzo Stoakes wrote:

Adjust the stack expansion functions expand_upwards() and
expand_downwards() such that they are expressed in terms of named constant
values, and make use of vma_start_pgoff().

This clearly documents that we are referencing the page offset of the start
of the VMA.

Additionally this cleans up the overflow check in expand_upwards().

No functional change intended.

Signed-off-by: Lorenzo Stoakes <ljs@kernel.org>

Reviewed-by: Gregory Price <gourry@gourry.net>