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Mon, 01 Sep 2025 01:11:18 -0700 (PDT) From: wang lian To: david@redhat.com Cc: akpm@linux-foundation.org, baolin.wang@linux.alibaba.com, linux-kselftest@vger.kernel.org, linux-mm@kvack.org, lorenzo.stoakes@oracle.com, richard.weiyang@gmail.com, ziy@nvidia.com, wang lian Subject: Re: [Patch v2] selftests/mm: check content to see whether mremap corrupt data Date: Mon, 1 Sep 2025 16:11:09 +0800 Message-Id: <20250901081109.52460-1-lianux.mm@gmail.com> X-Mailer: git-send-email 2.39.5 (Apple Git-154) In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspam-User: X-Rspamd-Server: rspam11 X-Rspamd-Queue-Id: D7FACA000F X-Stat-Signature: 7gfhqhowfxzbkf3qf3gemr9p4cp8b11o X-HE-Tag: 1756714279-172608 X-HE-Meta: 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 0oPz3pHs 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: >I'm confused, don't we have that exact check later in the function? > Your v1 might have been better, unless I am missing something. Hi David, Perhaps you missed this in the v1 feedback: https://lore.kernel.org/linux-mm/E0C570E7-C4CD-4E41-9590-DDB64757CA2C@nvidia.com/ ? Best regards, wang lian