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/[email protected] Signed-off-by: Miaohe Lin <[email protected]> Acked-by: Muchun Song <[email protected]> Cc: Matthew Wilcox <[email protected]> Cc: Yang Shi <[email protected]> Cc: Zach O'Keefe <[email protected]> Signed-off-by: Andrew Morton <[email protected]>
ambv · Jul 18, 2022 · d965e39 · d965e39
1 parent 4286f14
commit d965e39
Showing 1 changed file with 3 additions and 3 deletions.
diff --git 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)
 {