Re: [PATCH v2 30/33] mm/vma: correct incorrect vma.h inclusion

On 7/10/26 22:17, 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.

Reviewed-by: Pedro Falcato <pfalcato@suse.de>
Reviewed-by: Gregory Price <gourry@gourry.net>
Signed-off-by: Lorenzo Stoakes <ljs@kernel.org>

Reviewed-by: Vlastimil Babka (SUSE) <vbabka@kernel.org>

But given Mike's efforts [1] I wonder if there's a way to change the vma
header system in the future to stop requiring users of vma functions to
include the whole internal.h, while of course still allow the userland
testability.

[1]
https://lore.kernel.org/all/20260709-internal-h-v1-0-956d5092782d@kernel.org/ (local)