# Re: \[PATCH 34/39\] mm: eliminate VMA\_SPECIAL\_FLAGS check in lru\_gen\_look\_around()

- From: sashiko-bot@kernel.org
- Date: 2026-09-08 20:45:11 
- List: linux-trace-kernel
- Page: https://ratatoskr.run/linux-trace-kernel/2026/09/17533728
- Thread: https://ratatoskr.run/kvmarm/2026/09/17533522/t.md

```text
> A kernel-owned or fixed mapping is one which sets VMA_PFNMAP_BIT,
> VMA_MIXEDMAP_BIT or VMA_DONTEXPAND_BIT, which is precisely what
> VMA_SPECIAL_FLAGS tests for other than VMA_IO_BIT, which is safe to drop as
> only kernel-owned mappings may set it.
> 
> Using these predicates rather than VMA_SPECIAL_FLAGS makes the check
> self-documenting and helps eliminate the confusion around 'special' flags.
> 
> No functional change intended.
> 
> Signed-off-by: Lorenzo Stoakes (ARM) <ljs@kernel.org>

Sashiko has reviewed this patch and found no issues. It looks great!

-- 
Sashiko AI review · https://sashiko.dev/#/patchset/20260908-b4-mmap-prepare-vma-flag-sanify-v1-0-dacf19cce22b@kernel.org?part=34

```