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The mlock_vma_pages_range() uses walk_page_range() to walk the page table. Fortunately, the caller always passes start/end that falls within a single VMA, apply_vma_lock_flags() iterates per-VMA, and apply_mlockall_flags() passes the whole VMA. Since there is no .test_walk in mlock_walk_ops and VM_PFNMAP was filtered by vma_supports_mlock(), it's safe to replace walk_page_range() with walk_page_range_vma() to eliminate an unnecessary find_vma() lookup. Link: https://lore.kernel.org/20260618092845.3905740-4-wangkefeng.wang@huawei.com Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com> Reviewed-by: Zi Yan <ziy@nvidia.com> Acked-by: David Hildenbrand (Arm) <david@kernel.org> Reviewed-by: Pedro Falcato <pfalcato@suse.de> Cc: Alistair Popple <apopple@nvidia.com> Cc: Byungchul Park <byungchul@sk.com> Cc: Gregory Price <gourry@gourry.net> Cc: Joshua Hahn <joshua.hahnjy@gmail.com> Cc: Liam R. Howlett <liam@infradead.org> Cc: Lorenzo Stoakes <ljs@kernel.org> Cc: Matthew Brost <matthew.brost@intel.com> Cc: Rakie Kim <rakie.kim@sk.com> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Vlastimil Babka <vbabka@kernel.org> Cc: Ying Huang <ying.huang@linux.alibaba.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
831 lines
21 KiB
831 lines
21 KiB