From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mout-p-202.mailbox.org (mout-p-202.mailbox.org [80.241.56.172]) (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 D553213B7AE; Mon, 16 Jun 2025 09:00:39 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=80.241.56.172 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750064441; cv=none; b=aHdoSqvUadbMSg+/Bpcd+vhn7Wbsh7be1bgdNUQjzJXc8hSqIhhQ4ViBPEktLQBL1q4l1zDZzCU3E2KjOUq7jj44TbiY8PbUmb/r65lmX9zIL99OuyPs5B07LMepUj+c05AoSxMM81UXSSe7qrIiFu9+esHh+6CiGairbBJzyrk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750064441; c=relaxed/simple; bh=Twhxm9i9eQ6EcYvXRHiKqWBNcMUl5h9BDTHkxOKskFU=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=APBcjoNqUFt9Og0AX6SpyGd3If+U+4YWyCQrANOaizDt86ogcTHhKtX+08r44DkVab0iNA1K0VeEL2tKu3WryHzWEXHVDWEEpQ3ZOmCSWhh7UjTV2zXMw3YB8Eohl59/w7QJ1TYeS82FXtbjafyhukAhMhlF9XjX8fBeeGSPM80= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=pankajraghav.com; spf=pass smtp.mailfrom=pankajraghav.com; dkim=pass (2048-bit key) header.d=pankajraghav.com header.i=@pankajraghav.com header.b=OqlXNCcq; arc=none smtp.client-ip=80.241.56.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=pankajraghav.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=pankajraghav.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=pankajraghav.com header.i=@pankajraghav.com header.b="OqlXNCcq" Received: from smtp2.mailbox.org (smtp2.mailbox.org [IPv6:2001:67c:2050:b231:465::2]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by mout-p-202.mailbox.org (Postfix) with ESMTPS id 4bLP9B2tMfz9t8h; Mon, 16 Jun 2025 11:00:30 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=pankajraghav.com; s=MBO0001; t=1750064430; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Sw2JUl1JyK0AiB+kHg6y3aGB9TupL2wuBZlKDT9xIUM=; b=OqlXNCcq5xwQy/VyRXIHl3E2kCchNOQE7Dcl6aMs2EakarUOioTLwx8VFqjfOqz7kgfEZ7 GuZvoL9nRscZG80pgL1sgWi95/LI+DlmGUUmQojySyi+LJaKo9VkbXCzmi1ZhAClUReZor tQVowIrwk81n99mpgOz7CZkobuQTUSEdP5LPGs2dHuTerloJEKwEGek2t6UNW1FIs76TXw ic4jejg2YfKwqNPryd3k6RH/pAZgDL9Uk7fTtFeUNZCmnV0K/bHej1AynSaRw5eJHYLTK8 FSZeL3FwRTkoabpCfXFZDzspd79fdfGDquAtihhCE4QzgrVRoaUSEXlzWtcL7g== Message-ID: <9de7fbb6-63de-40eb-b2c0-cbf9fb084bee@pankajraghav.com> Date: Mon, 16 Jun 2025 11:00:19 +0200 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Subject: Re: [PATCH 0/5] add STATIC_PMD_ZERO_PAGE config option To: Christoph Hellwig , Pankaj Raghav Cc: Suren Baghdasaryan , Ryan Roberts , Mike Rapoport , Michal Hocko , Thomas Gleixner , Nico Pache , Dev Jain , Baolin Wang , Borislav Petkov , Ingo Molnar , "H . Peter Anvin" , Vlastimil Babka , Zi Yan , Dave Hansen , David Hildenbrand , Lorenzo Stoakes , Andrew Morton , "Liam R . Howlett" , Jens Axboe , linux-kernel@vger.kernel.org, linux-mm@kvack.org, willy@infradead.org, x86@kernel.org, linux-block@vger.kernel.org, linux-fsdevel@vger.kernel.org, "Darrick J . Wong" , mcgrof@kernel.org, gost.dev@samsung.com References: <20250612105100.59144-1-p.raghav@samsung.com> <20250616054034.GA1559@lst.de> Content-Language: en-US From: Pankaj Raghav In-Reply-To: <20250616054034.GA1559@lst.de> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: 4bLP9B2tMfz9t8h On 6/16/25 07:40, Christoph Hellwig wrote: > Just curious: why doesn't this series get rid of the iomap zero_page, > which would be really low hanging fruit? > I did the conversion in my first RFC series [1]. But the implementation and API for the zero page was still under heavy discussion. So I decided to focus on that instead and leave the conversion for later as I mentioned in the cover letter. I included blkdev_issue_zero_pages() as it is a more straight forward conversion. -- Pankaj [1] https://lore.kernel.org/linux-mm/20250516101054.676046-4-p.raghav@samsung.com/