thp: fix comments of __pmd_trans_huge_lock()
To make the comments consistent with the already changed code.
Link: http://lkml.kernel.org/r/1466200004-6196-1-git-send-email-ying.huang@intel.com
Signed-off-by: "Huang, Ying" <ying.huang@intel.com>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index d3abbf2..3647334 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -1458,10 +1458,10 @@
}
/*
- * Returns true if a given pmd maps a thp, false otherwise.
+ * Returns page table lock pointer if a given pmd 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 *__pmd_trans_huge_lock(pmd_t *pmd, struct vm_area_struct *vma)
{