linux-kernel - [PATCH] mm: remove obsolete comments about page table lock

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Date:	Wed, 04 Sep 2013 12:50:23 -0400
From:	Naoya Horiguchi <n-horiguchi@...jp.nec.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	linux-mm@...ck.org,
	"Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>,
	linux-kernel@...r.kernel.org
Subject: [PATCH] mm: remove obsolete comments about page table lock

The callers of free_pgd_range() and hugetlb_free_pgd_range() don't hold
page table locks. The comments seems to be obsolete, so let's remove them.

Signed-off-by: Naoya Horiguchi <n-horiguchi@...jp.nec.com>
---
 arch/powerpc/mm/hugetlbpage.c | 2 --
 mm/memory.c                   | 2 --
 2 files changed, 4 deletions(-)

diff --git a/arch/powerpc/mm/hugetlbpage.c b/arch/powerpc/mm/hugetlbpage.c
index 7e56cb7..31c20e2 100644
--- a/arch/powerpc/mm/hugetlbpage.c
+++ b/arch/powerpc/mm/hugetlbpage.c
@@ -635,8 +635,6 @@ static void hugetlb_free_pud_range(struct mmu_gather *tlb, pgd_t *pgd,
 
 /*
  * This function frees user-level page tables of a process.
- *
- * Must be called with pagetable lock held.
  */
 void hugetlb_free_pgd_range(struct mmu_gather *tlb,
 			    unsigned long addr, unsigned long end,
diff --git a/mm/memory.c b/mm/memory.c
index 6827a35..8c97ef0 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -478,8 +478,6 @@ static inline void free_pud_range(struct mmu_gather *tlb, pgd_t *pgd,
 
 /*
  * This function frees user-level page tables of a process.
- *
- * Must be called with pagetable lock held.
  */
 void free_pgd_range(struct mmu_gather *tlb,
 			unsigned long addr, unsigned long end,
-- 
1.8.3.1
--
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