Re: [PATCH 01/13] mm: introduce vma_flags_can_grow() and vma_can_grow()

Lance Yang <[email protected]> Thu, 2 Jul 2026 15:27:50 +0800
Newsgroups org.kernel.vger.linux-fbdev,dev.linux.lists.virtualization,org.freedesktop.lists.dri-devel,org.freedesktop.lists.intel-gfx,org.freedesktop.lists.intel-xe,org.freedesktop.lists.nouveau,org.infradead.lists.linux-rockchip,org.kernel.vger.linux-arm-msm,org.kernel.vger.linux-fsdevel,org.kernel.vger.linux-kernel,org.kernel.vger.linux-mips,org.kernel.vger.linux-samsung-soc,org.kernel.vger.linux-sound,org.kernel.vger.linux-tegra,org.ozlabs.lists.linuxppc-dev,org.xenproject.lists.xen-devel
Message-ID <[email protected]> 
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 <[email protected]>
>---

Nice cleanup! Feel free to add:

Reviewed-by: Lance Yang <[email protected]>