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| author | Miaohe Lin <linmiaohe@huawei.com> | 2022-07-04 15:21:48 +0200 |
|---|---|---|
| committer | akpm <akpm@linux-foundation.org> | 2022-07-18 02:14:44 +0200 |
| commit | d965e3907540e829df27a22738536d3b9d989820 (patch) | |
| tree | 20561cb739c0302906c72ac79a66f384ab242ff7 | |
| parent | mm/huge_memory: access vm_page_prot with READ_ONCE in remove_migration_pmd (diff) | |
| download | linux-d965e3907540e829df27a22738536d3b9d989820.tar.xz linux-d965e3907540e829df27a22738536d3b9d989820.zip | |
mm/huge_memory: fix comment of __pud_trans_huge_lock
__pud_trans_huge_lock returns page table lock pointer if a given pud maps
a thp instead of 'true' since introduced. Fix corresponding comments.
Link: https://lkml.kernel.org/r/20220704132201.14611-4-linmiaohe@huawei.com
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Acked-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>
| -rw-r--r-- | mm/huge_memory.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/mm/huge_memory.c b/mm/huge_memory.c index fb0011fe9128..f0adc9db0d60 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -1906,10 +1906,10 @@ spinlock_t *__pmd_trans_huge_lock(pmd_t *pmd, struct vm_area_struct *vma) } /* - * Returns true if a given pud maps a thp, false otherwise. + * Returns page table lock pointer if a given pud maps a thp, NULL otherwise. * - * Note that if it returns true, this routine returns without unlocking page - * table lock. So callers must unlock it. + * Note that if it returns page table lock pointer, this routine returns without + * unlocking page table lock. So callers must unlock it. */ spinlock_t *__pud_trans_huge_lock(pud_t *pud, struct vm_area_struct *vma) { |