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([14.38.141.199]) by cvnsmtp009.nm.naver.com with ESMTP id rkY7GxkhQYavHSniVnx2YA for (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384); Tue, 12 May 2026 14:35:45 -0000 From: Minu Jin To: akpm@linux-foundation.org, david@kernel.org Cc: ljs@kernel.org, liam@infradead.org, vbabka@kernel.org, rppt@kernel.org, surenb@google.com, mhocko@suse.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org, Minu Jin Subject: [PATCH] mm: fix misleading comment for remap_pfn_range() Date: Tue, 12 May 2026 23:35:43 +0900 Message-ID: <20260512143543.258399-1-s9430939@naver.com> X-Mailer: git-send-email 2.43.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspam-User: X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: D28C1A000B X-Stat-Signature: pk618uygfd83u4rrqp55ehid7pd3r9pf X-HE-Tag: 1778596549-986530 X-HE-Meta: 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 SDhBjbXF oOYp0byRgFaqZFLFN610KAJbf7EhnEvm/YgGHMfB8fe23ilsuOO/IIiSPv/5JrPphVeHwhpuOHWHGQ3eHqV33y8dEkiN5pyMm7n5Jaq2IlA3s+px0CcKwoLYype04THfHGPzsQiZHUE88Va6MTQPE/0Qa2l6C8dJSzUbalM/uNXVKDqO2jdOFE93/cWXncj+Sd5KGGyDbmblURo4iiE/hADTvi0Ss3j95uPnWRwoxGxkcdFJp0sFVAipz8oJ1EfdlASbnTiHPxKH9g1rILYnJr0eL8Egi1BcK/wUHf4DvUp3ZTsGzuED5FsphSIm3Ap0TJO9buDgVArqQGHbC8z9mCf0UiGtag91K9v5h2+JYqtb4/2XdTk0C6qyeMQ/7pfg8xtwlYJvifEJ7N17xCPmp6VV0rx4OUwZs3W4lNhsZlm2rM8NQBu4ELEVpWIbDSICQ5Ln9lbqQpeT1jdUPPp3PNgm5JdJm7SHO8bFM Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: The function summary describes this as remapping "kernel memory", but remap_pfn_range() operates on arbitrary PFNs, including device MMIO regions that are not kernel memory at all. Replace with "physical address range". It describes accurately what the function maps. Signed-off-by: Minu Jin --- mm/memory.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/memory.c b/mm/memory.c index ea6568571131..4e07e03a76a4 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -3172,7 +3172,7 @@ static int remap_pfn_range_prepare_vma(struct vm_area_struct *vma, } /** - * remap_pfn_range - remap kernel memory to userspace + * remap_pfn_range - remap physical address range to user space * @vma: user vma to map to * @addr: target page aligned user address to start at * @pfn: page frame number of kernel physical memory address -- 2.43.0