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From: Minu Jin <s9430939@naver.com>
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 <s9430939@naver.com>
Subject: [PATCH] mm: fix misleading comment for remap_pfn_range()
Date: Tue, 12 May 2026 23:35:43 +0900	[thread overview]
Message-ID: <20260512143543.258399-1-s9430939@naver.com> (raw)

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 <s9430939@naver.com>
---
 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



             reply	other threads:[~2026-05-12 14:35 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-05-12 14:35 Minu Jin [this message]
2026-05-12 15:46 ` [PATCH] mm: fix misleading comment for remap_pfn_range() Lorenzo Stoakes

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