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Re: [PATCH 01/13] mm: introduce vma_flags_can_grow() and vma_can_grow()
- To: ljs@xxxxxxxxxx
- From: Lance Yang <lance.yang@xxxxxxxxx>
- Date: Thu, 2 Jul 2026 15:27:50 +0800
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- Delivery-date: Thu, 02 Jul 2026 07:28:26 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On Mon, Jun 29, 2026 at 08:25:24PM +0100, Lorenzo Stoakes wrote:
>These test whether the VMA has stack sematics, i.e. is able to grow upwards
>or downwards depending on the architecture.
>
>In order to account for arches which do not support upward-growing stacks,
>introduce VMA_GROWSUP whose definition depends on the architecture
>supporting it, and use vma_flags_test_single_mask() in vma_flags_can_grow()
>to account for this.
>
>Update the VMA userland tests to reflect the changes
>
>No functional change intended.
>
>Signed-off-by: Lorenzo Stoakes <ljs@xxxxxxxxxx>
>---
Nice cleanup! Feel free to add:
Reviewed-by: Lance Yang <lance.yang@xxxxxxxxx>
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