linux-kernel - [PATCH] mm: remove obsolete comment in do_fault

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Message-ID: <20220716080359.38791-1-linmiaohe@huawei.com>
Date:   Sat, 16 Jul 2022 16:03:59 +0800
From:   Miaohe Lin <linmiaohe@...wei.com>
To:     <akpm@...ux-foundation.org>
CC:     <linux-mm@...ck.org>, <linux-kernel@...r.kernel.org>,
        <linmiaohe@...wei.com>
Subject: [PATCH] mm: remove obsolete comment in do_fault_around()

Since commit 7267ec008b5c ("mm: postpone page table allocation until we
have page to map"), do_fault_around is not called with page table lock
held. Cleanup the corresponding comments.

Signed-off-by: Miaohe Lin <linmiaohe@...wei.com>
---
 mm/memory.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/mm/memory.c b/mm/memory.c
index 14f0986af084..f671b2dce1fe 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -4458,10 +4458,6 @@ late_initcall(fault_around_debugfs);
  * It uses vm_ops->map_pages() to map the pages, which skips the page if it's
  * not ready to be mapped: not up-to-date, locked, etc.
  *
- * This function is called with the page table lock taken. In the split ptlock
- * case the page table lock only protects only those entries which belong to
- * the page table corresponding to the fault address.
- *
  * This function doesn't cross the VMA boundaries, in order to call map_pages()
  * only once.
  *
-- 
2.23.0