From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5A6243BFE59; Tue, 17 Mar 2026 16:57:05 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773766625; cv=none; b=S2zvBMlSBlVnh31JI6z6UZa9yIx3RJDQTzHhJRycTne07ZSp7MK3ZvcPeU+SPJitbp2dPvXX+rnVC+LCFRnKdRRAwTjgX1Y4cHD1oMCLFqCxYiyLqXQdlUkd9nMVhjNf4Ry7ZlVBujoi+9uL8hxNDeil7TTR186k9tDJ2QJkY+Y= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773766625; c=relaxed/simple; bh=enaf/WHlxY0+rUz/sR0jg/TQSIcygwkranNM2RjUkME=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=We7IN/m8lyhTeeUa3ItTdssl/Z+HEFLhS6suNEVhKqEyUuc320VMJ9EpajmG9GieHWSboyz8SnEyOdHaj+1whmM6HV/hXwfbBWHGKDcvDQ+1vI9CWbJtYcJ5fLDZAEWlnk8ZaEBoZgEb77aKhqh+0trj3VUtIGB31vWCz/x1oxY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=LO80KQZL; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="LO80KQZL" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7CB83C4CEF7; Tue, 17 Mar 2026 16:57:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1773766625; bh=enaf/WHlxY0+rUz/sR0jg/TQSIcygwkranNM2RjUkME=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=LO80KQZLO7/y5oXQFwtwUJ0/a9RhLfjeBQuSn8qocvIykFu/p0BLR7KGJKb2A5JqP PPoruzqnYUL8+CG8tw0kc6SqV14FbtFCEBTdKN1cuyY2OkyZfa8sXIAtPRxszTOJdX cFa/uDAO+FzUH/CSM3+jM2HdbYBNvbFkmuw6iozaq8GeqCFVitPnVz18N35lN7/188 6MlhgdwanmY0jnhsl+jgHYJNmaVnUqb1Oggk6TLSnA6tgghgwlH/1bRQcUKaJJdkU5 IjedjUKfm3/olQK+OP4IaqHxQetBGgX59nK99evDpDoCe5igVI6ojJkVhNSNB+0mjh JvE7X95S26utA== From: "David Hildenbrand (Arm)" To: linux-kernel@vger.kernel.org Cc: linux-mm@kvack.org, linux-cxl@vger.kernel.org, "David Hildenbrand (Arm)" , Andrew Morton , Oscar Salvador , Axel Rasmussen , Yuanchu Xie , Wei Xu , Lorenzo Stoakes , "Liam R. Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko Subject: [PATCH 01/14] mm/memory_hotplug: remove for_each_valid_pfn() usage Date: Tue, 17 Mar 2026 17:56:39 +0100 Message-ID: <20260317165652.99114-2-david@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260317165652.99114-1-david@kernel.org> References: <20260317165652.99114-1-david@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit When offlining memory, we know that the memory range has no holes. Checking for valid pfns is not required. Signed-off-by: David Hildenbrand (Arm) --- mm/memory_hotplug.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c index 86d3faf50453..3495d94587e7 100644 --- a/mm/memory_hotplug.c +++ b/mm/memory_hotplug.c @@ -1746,7 +1746,7 @@ static int scan_movable_pages(unsigned long start, unsigned long end, { unsigned long pfn; - for_each_valid_pfn(pfn, start, end) { + for (pfn = start; pfn < end; pfn++) { struct page *page; struct folio *folio; @@ -1791,7 +1791,7 @@ static void do_migrate_range(unsigned long start_pfn, unsigned long end_pfn) static DEFINE_RATELIMIT_STATE(migrate_rs, DEFAULT_RATELIMIT_INTERVAL, DEFAULT_RATELIMIT_BURST); - for_each_valid_pfn(pfn, start_pfn, end_pfn) { + for (pfn = start_pfn; pfn < end_pfn; pfn++) { struct page *page; page = pfn_to_page(pfn); -- 2.43.0