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Message-Id: <597a93841525dbd58fbebcfdc547f2080694835b.1727148662.git.zhengqi.arch@bytedance.com>
Date: Tue, 24 Sep 2024 14:09:54 +0800
From: Qi Zheng <zhengqi.arch@...edance.com>
To: david@...hat.com,
hughd@...gle.com,
willy@...radead.org,
muchun.song@...ux.dev,
vbabka@...nel.org,
akpm@...ux-foundation.org,
rppt@...nel.org,
vishal.moola@...il.com,
peterx@...hat.com,
ryan.roberts@....com,
christophe.leroy2@...soprasteria.com
Cc: linux-kernel@...r.kernel.org,
linux-mm@...ck.org,
linux-arm-kernel@...ts.infradead.org,
linuxppc-dev@...ts.ozlabs.org,
Qi Zheng <zhengqi.arch@...edance.com>
Subject: [PATCH v4 02/13] powerpc: assert_pte_locked() use pte_offset_map_ro_nolock()
In assert_pte_locked(), we just get the ptl and assert if it was already
held, so convert it to using pte_offset_map_ro_nolock().
Signed-off-by: Qi Zheng <zhengqi.arch@...edance.com>
Acked-by: David Hildenbrand <david@...hat.com>
Reviewed-by: Muchun Song <muchun.song@...ux.dev>
---
arch/powerpc/mm/pgtable.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/powerpc/mm/pgtable.c b/arch/powerpc/mm/pgtable.c
index 7316396e452d8..61df5aed79894 100644
--- a/arch/powerpc/mm/pgtable.c
+++ b/arch/powerpc/mm/pgtable.c
@@ -398,7 +398,7 @@ void assert_pte_locked(struct mm_struct *mm, unsigned long addr)
*/
if (pmd_none(*pmd))
return;
- pte = pte_offset_map_nolock(mm, pmd, addr, &ptl);
+ pte = pte_offset_map_ro_nolock(mm, pmd, addr, &ptl);
BUG_ON(!pte);
assert_spin_locked(ptl);
pte_unmap(pte);
--
2.20.1
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