[v2,06/16] mm/huge_memory: rename mmun_start to haddr in remove_migration_pmd

Commit Message

Miaohe Lin June 28, 2022, 1:28 p.m. UTC

mmun_start indicates mmu_notifier start address but there's no mmu_notifier
stuff in remove_migration_pmd. This will make it hard to get the meaning of
mmun_start. Rename it to haddr to avoid confusing readers and also imporve
readability.

Signed-off-by: Miaohe Lin <[e-mail]>
Reviewed-by: Muchun Song <[e-mail]>
---
 mm/huge_memory.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

Patch

diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index d9fe9b034783..8364b9b25b3a 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -3279,7 +3279,7 @@  void remove_migration_pmd(struct page_vma_mapped_walk *pvmw, struct page *new)
 	struct vm_area_struct *vma = pvmw->vma;
 	struct mm_struct *mm = vma->vm_mm;
 	unsigned long address = pvmw->address;
-	unsigned long mmun_start = address & HPAGE_PMD_MASK;
+	unsigned long haddr = address & HPAGE_PMD_MASK;
 	pmd_t pmde;
 	swp_entry_t entry;
 
@@ -3302,12 +3302,12 @@  void remove_migration_pmd(struct page_vma_mapped_walk *pvmw, struct page *new)
 		if (!is_readable_migration_entry(entry))
 			rmap_flags |= RMAP_EXCLUSIVE;
 
-		page_add_anon_rmap(new, vma, mmun_start, rmap_flags);
+		page_add_anon_rmap(new, vma, haddr, rmap_flags);
 	} else {
 		page_add_file_rmap(new, vma, true);
 	}
 	VM_BUG_ON(pmd_write(pmde) && PageAnon(new) && !PageAnonExclusive(new));
-	set_pmd_at(mm, mmun_start, pvmw->pmd, pmde);
+	set_pmd_at(mm, haddr, pvmw->pmd, pmde);
 
 	/* No need to invalidate - it was non-present before */
 	update_mmu_cache_pmd(vma, address, pvmw->pmd);