Message ID | a69c4631ab86ff9aad3f576c4f88979a223bbc55.1724226076.git.zhengqi.arch@bytedance.com (mailing list archive) |
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Wed, 21 Aug 2024 01:19:45 -0700 (PDT) Received: from C02DW0BEMD6R.bytedance.net ([203.208.167.150]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-2d5eb9049b0sm1091453a91.17.2024.08.21.01.19.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 21 Aug 2024 01:19:45 -0700 (PDT) From: Qi Zheng <zhengqi.arch@bytedance.com> To: david@redhat.com, hughd@google.com, willy@infradead.org, muchun.song@linux.dev, vbabka@kernel.org, akpm@linux-foundation.org, rppt@kernel.org, vishal.moola@gmail.com, peterx@redhat.com, ryan.roberts@arm.com Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-arm-kernel@lists.infradead.org, linuxppc-dev@lists.ozlabs.org, Qi Zheng <zhengqi.arch@bytedance.com> Subject: [PATCH 03/14] powerpc: assert_pte_locked() use pte_offset_map_readonly_nolock() Date: Wed, 21 Aug 2024 16:18:46 +0800 Message-Id: <a69c4631ab86ff9aad3f576c4f88979a223bbc55.1724226076.git.zhengqi.arch@bytedance.com> X-Mailer: git-send-email 2.24.3 (Apple Git-128) In-Reply-To: <cover.1724226076.git.zhengqi.arch@bytedance.com> References: <cover.1724226076.git.zhengqi.arch@bytedance.com> X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: <linuxppc-dev.lists.ozlabs.org> List-Help: <mailto:linuxppc-dev+help@lists.ozlabs.org> List-Post: <mailto:linuxppc-dev@lists.ozlabs.org> List-Subscribe: <mailto:linuxppc-dev+subscribe@lists.ozlabs.org>, <mailto:linuxppc-dev+subscribe-digest@lists.ozlabs.org>, <mailto:linuxppc-dev+subscribe-nomail@lists.ozlabs.org> List-Unsubscribe: <mailto:linuxppc-dev+unsubscribe@lists.ozlabs.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit |
Series |
introduce pte_offset_map_{readonly|maywrite}_nolock()
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expand
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diff --git a/arch/powerpc/mm/pgtable.c b/arch/powerpc/mm/pgtable.c index 7316396e452d8..ae4d236b5cef7 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_readonly_nolock(mm, pmd, addr, &ptl); BUG_ON(!pte); assert_spin_locked(ptl); pte_unmap(pte);
In assert_pte_locked(), we just get the ptl and assert if it was already held, so convert it to using pte_offset_map_readonly_nolock(). Signed-off-by: Qi Zheng <zhengqi.arch@bytedance.com> --- arch/powerpc/mm/pgtable.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)