Re: [PATCH 38/39] mm/huge_memory: remove vma_is_special_huge()
From: sashiko-bot@kernel.org
Date: 2026-09-08 20:45:10
Also in:
bpf, dri-devel, kvm, kvmarm, linux-perf-users, linux-s390, linux-scsi, selinux
vma_is_special_huge() tests whether either the VMA_PFNMAP_BIT or VMA_MIXEDMAP_BIT is set (i.e. whether the VMA is a kernel-owned mapping), but with a DAX carve-out. DAX however no longer sets VMA_MIXEDMAP_BIT, so this carve-out is no longer required. Therefore test for vma_is_kernel_owned() instead and also drop the VMA_IO_BIT check, as it is now redundant since it is enforced that only kernel-owned mappings can set this flag. This also eliminates another overloaded use of 'special' within mm. 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=38