vmemmap_populate_address() no longer has any callers that need the
returned PTE.  Its only remaining user, vmemmap_populate_range(), only
checks whether population succeeded.

Open-code vmemmap_populate_address() directly in
vmemmap_populate_basepages(), remove the now-redundant range helper,
and return -ENOMEM directly on failure.

Signed-off-by: Muchun Song <[email protected]>
---
 mm/sparse-vmemmap.c | 54 ++++++++++++++-------------------------------
 1 file changed, 17 insertions(+), 37 deletions(-)

diff --git a/mm/sparse-vmemmap.c b/mm/sparse-vmemmap.c
index 8b4904d9c65e..5e0e30c77431 100644
--- a/mm/sparse-vmemmap.c
+++ b/mm/sparse-vmemmap.c
@@ -303,8 +303,8 @@ static pgd_t * __meminit vmemmap_pgd_populate(unsigned long 
addr, int node)
        return pgd;
 }
 
-static pte_t * __meminit vmemmap_populate_address(unsigned long addr, int node,
-                                                 struct vmem_altmap *altmap)
+int __meminit vmemmap_populate_basepages(unsigned long start, unsigned long 
end,
+                                        int node, struct vmem_altmap *altmap)
 {
        pgd_t *pgd;
        p4d_t *p4d;
@@ -312,48 +312,28 @@ static pte_t * __meminit 
vmemmap_populate_address(unsigned long addr, int node,
        pmd_t *pmd;
        pte_t *pte;
 
-       pgd = vmemmap_pgd_populate(addr, node);
-       if (!pgd)
-               return NULL;
-       p4d = vmemmap_p4d_populate(pgd, addr, node);
-       if (!p4d)
-               return NULL;
-       pud = vmemmap_pud_populate(p4d, addr, node);
-       if (!pud)
-               return NULL;
-       pmd = vmemmap_pmd_populate(pud, addr, node);
-       if (!pmd)
-               return NULL;
-       pte = vmemmap_pte_populate(pmd, addr, node, altmap);
-       if (!pte)
-               return NULL;
-       vmemmap_verify(pte, node, addr, addr + PAGE_SIZE);
-
-       return pte;
-}
-
-static int __meminit vmemmap_populate_range(unsigned long start,
-                                           unsigned long end, int node,
-                                           struct vmem_altmap *altmap)
-{
-       unsigned long addr = start;
-       pte_t *pte;
-
-       for (; addr < end; addr += PAGE_SIZE) {
-               pte = vmemmap_populate_address(addr, node, altmap);
+       for (unsigned long addr = start; addr < end; addr += PAGE_SIZE) {
+               pgd = vmemmap_pgd_populate(addr, node);
+               if (!pgd)
+                       return -ENOMEM;
+               p4d = vmemmap_p4d_populate(pgd, addr, node);
+               if (!p4d)
+                       return -ENOMEM;
+               pud = vmemmap_pud_populate(p4d, addr, node);
+               if (!pud)
+                       return -ENOMEM;
+               pmd = vmemmap_pmd_populate(pud, addr, node);
+               if (!pmd)
+                       return -ENOMEM;
+               pte = vmemmap_pte_populate(pmd, addr, node, altmap);
                if (!pte)
                        return -ENOMEM;
+               vmemmap_verify(pte, node, addr, addr + PAGE_SIZE);
        }
 
        return 0;
 }
 
-int __meminit vmemmap_populate_basepages(unsigned long start, unsigned long 
end,
-                                        int node, struct vmem_altmap *altmap)
-{
-       return vmemmap_populate_range(start, end, node, altmap);
-}
-
 /*
  * Write protect the mirrored tail page structs for HVO. This will be
  * called from the hugetlb code when gathering and initializing the
-- 
2.54.0


Reply via email to