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mm/huge_memory: rename mmun_start to haddr in remove_migration_pmd

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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.

Link: https://lkml.kernel.org/r/20220704132201.14611-7-linmiaohe@huawei.com
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Reviewed-by: Muchun Song <songmuchun@bytedance.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Yang Shi <shy828301@gmail.com>
Cc: Zach O'Keefe <zokeefe@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Miaohe Lin 2022-07-04 21:21:51 +08:00 committed by akpm
parent a69e4717c6
commit 4fba8f2a30
1 changed files with 3 additions and 3 deletions
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6
mm/huge_memory.c
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@ -3180,7 +3180,7 @@ 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;
@ -3203,12 +3203,12 @@ 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);