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-rw-r--r--mm/huge_memory.c20
1 files changed, 11 insertions, 9 deletions
diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index 5da55b38b1b7..e84a10b0d310 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -2144,23 +2144,25 @@ static void __split_huge_pmd_locked(struct vm_area_struct *vma, pmd_t *pmd,
*/
old_pmd = pmdp_invalidate(vma, haddr, pmd);
-#ifdef CONFIG_ARCH_ENABLE_THP_MIGRATION
pmd_migration = is_pmd_migration_entry(old_pmd);
- if (pmd_migration) {
+ if (unlikely(pmd_migration)) {
swp_entry_t entry;
entry = pmd_to_swp_entry(old_pmd);
page = pfn_to_page(swp_offset(entry));
- } else
-#endif
+ write = is_write_migration_entry(entry);
+ young = false;
+ soft_dirty = pmd_swp_soft_dirty(old_pmd);
+ } else {
page = pmd_page(old_pmd);
+ if (pmd_dirty(old_pmd))
+ SetPageDirty(page);
+ write = pmd_write(old_pmd);
+ young = pmd_young(old_pmd);
+ soft_dirty = pmd_soft_dirty(old_pmd);
+ }
VM_BUG_ON_PAGE(!page_count(page), page);
page_ref_add(page, HPAGE_PMD_NR - 1);
- if (pmd_dirty(old_pmd))
- SetPageDirty(page);
- write = pmd_write(old_pmd);
- young = pmd_young(old_pmd);
- soft_dirty = pmd_soft_dirty(old_pmd);
/*
* Withdraw the table only after we mark the pmd entry invalid.