Re: [PATCH v4 13/20] mm/migrate: calculate large folio page index using PFN
From: "David Hildenbrand (Arm)" <david@kernel.org>
Date: 2026-08-11 16:50:22
Also in:
amd-gfx, dri-devel, intel-xe, kvm, linux-fsdevel, linux-kselftest, linux-mm, linux-perf-users, linux-s390, lkml
On 8/6/26 22:21, Lorenzo Stoakes (ARM) wrote:
Rather than having to figure out the page index to use using linear_page_index(), calculate it using PFN. This is a more natural fit as the linear page index is immaterial to determining the folio page index. Derive the page index from the offset between migration entry PFN and folio PFN - pvmw.pfn (set via DEFINE_FOLIO_VMA_WALK() which uses folio_pfn() to obtain it). Additionally remove a not so useful comment and clean the code layout up. No functional change intended. Suggested-by: David Hildenbrand (Arm) <david@kernel.org> Signed-off-by: Lorenzo Stoakes (ARM) <ljs@kernel.org> ---
Acked-by: David Hildenbrand (Arm) <david@kernel.org> -- Cheers, David