Re: [PATCH v2 03/14] powerpc: assert_pte_locked() use pte_offset_map_ro_nolock()

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To: Qi Zheng <zhengqi.arch@xxxxxxxxxxxxx>, david@xxxxxxxxxx, hughd@xxxxxxxxxx, willy@xxxxxxxxxxxxx, vbabka@xxxxxxxxxx, akpm@xxxxxxxxxxxxxxxxxxxx, rppt@xxxxxxxxxx, vishal.moola@xxxxxxxxx, peterx@xxxxxxxxxx, ryan.roberts@xxxxxxx, christophe.leroy2@xxxxxxxxxxxxxxxxxx
Subject: Re: [PATCH v2 03/14] powerpc: assert_pte_locked() use pte_offset_map_ro_nolock()
From: Muchun Song <muchun.song@xxxxxxxxx>
Date: Thu, 29 Aug 2024 15:21:53 +0800
Cc: linux-kernel@xxxxxxxxxxxxxxx, linux-mm@xxxxxxxxx, linux-arm-kernel@xxxxxxxxxxxxxxxxxxx, linuxppc-dev@xxxxxxxxxxxxxxxx
In-reply-to: <89ae94f722996b4ee7ef20d44cd7f5e2f0495c47.1724310149.git.zhengqi.arch@bytedance.com>
References: <cover.1724310149.git.zhengqi.arch@bytedance.com> <89ae94f722996b4ee7ef20d44cd7f5e2f0495c47.1724310149.git.zhengqi.arch@bytedance.com>



On 2024/8/22 15:13, Qi Zheng wrote:

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@xxxxxxxxxxxxx>


Reviewed-by: Muchun Song <muchun.song@xxxxxxxxx>

References:
- [PATCH v2 00/14] introduce pte_offset_map_{ro|rw}_nolock()
  - From: Qi Zheng
- [PATCH v2 03/14] powerpc: assert_pte_locked() use pte_offset_map_ro_nolock()
  - From: Qi Zheng

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