Re: [PATCH 27/30] mm/vma: correct incorrect vma.h inclusion

Gregory Price <[email protected]>
Newsgroups dev.linux.lists.nvdimm,dev.linux.lists.damon,dev.linux.lists.iommu,org.freedesktop.lists.dri-devel,org.kernel.vger.kvm,org.kernel.vger.linux-arm-msm,org.kernel.vger.linux-fsdevel,org.kernel.vger.linux-kernel,org.kernel.vger.linux-parisc,org.kernel.vger.linux-perf-users,org.kernel.vger.linux-sgx,org.kernel.vger.linux-tegra,org.kernel.vger.linux-trace-kernel,org.kvack.linux-mm
Message-ID <alFHR3fg8K1-SITK@gourry-fedora-PF4VCD3F>
On Mon, Jun 29, 2026 at 01:23:38PM +0100, Lorenzo Stoakes wrote:
> The only files which should be including vma.h are the implementation files
> for the core VMA logic - vma.c, vma_init.c, and vma_exec.c.
> 
> This is in order to allow for userland testing of core VMA logic. In this
> cases, vma_internal.h and vma.h are included, providing both the
> dependencies upon which the core VMA logic requires and its declarations.
> 
> Userland testable VMA logic is achieved by having separate vma_internal.h
> implementations for userland and kernel.
> 
> Callers other than the core VMA implementation should include internal.h
> instead. This header does not need to include vma_internal.h as it only
> contains the vma.h declarations, for which the includes already present
> suffice.
> 
> Update code to reflect this, update comments to reflect the fact there are
> 3 VMA implementation files and document things more clearly.
> 
> While we're here, slightly improve the language of the comment describing
> vma_exec.c.
> 
> No functional change intended.
> 
> Signed-off-by: Lorenzo Stoakes <[email protected]>

Reviewed-by: Gregory Price <[email protected]>

> +/*
> + * To allow for userland testing we place internal dependencies in
> + * vma_internal.h and external VMA API declarations in vma.h.
> + */
...
> +/*
> + * To allow for userland testing we place internal dependencies in
> + * vma_internal.h and external VMA API declarations in vma.h.
> + */
...
> +/*
> + * To allow for userland testing we place internal dependencies in
> + * vma_internal.h and external VMA API declarations in vma.h.
> + */

Do you actually need 3 copies of this comment or just one copy in
vma_internal.h?
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