[patch 139/262] hugetlb: replace the obsolete hugetlb_instantiation_mutex in the comments

Andrew Morton
2021-11-05T20:41:58Z

From: Baolin Wang <baolin.wang@linux.alibaba.com>
Subject: hugetlb: replace the obsolete hugetlb_instantiation_mutex in the comments

After commit 8382d914ebf7 ("mm, hugetlb: improve page-fault scalability"),
the hugetlb_instantiation_mutex lock had been replaced by
hugetlb_fault_mutex_table to serializes faults on the same logical page.
Thus update the obsolete hugetlb_instantiation_mutex related comments.

Link: https://lkml.kernel.org/r/4b3febeae37455ff7b74aa0aad16cc6909cf0926.1634797639.git.baolin.wang@linux.alibaba.com
Signed-off-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Michal Hocko <mhocko@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

mm/hugetlb.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/mm/hugetlb.c~hugetlb-replace-the-obsolete-hugetlb_instantiation_mutex-in-the-comments
+++ a/mm/hugetlb.c
@@ -5014,7 +5014,7 @@ static void unmap_ref_private(struct mm_

/*
* Hugetlb_cow() should be called with page lock of the original hugepage held.
- * Called with hugetlb_instantiation_mutex held and pte_page locked so we
+ * Called with hugetlb_fault_mutex_table held and pte_page locked so we
* cannot race with other handlers or page migration.
* Keep the pte_same checks anyway to make transition from the mutex easier.
*/
_