From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from casper.infradead.org (casper.infradead.org [90.155.50.34]) (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 73C4B17D2 for ; Sat, 15 Nov 2025 05:07:58 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=90.155.50.34 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763183284; cv=none; b=MulBlIlYna9jFQe4B+V0+rptAXVNl/Ld+arBiB2BkykGWNnvilEr5P/XJvCUqpW7UDdA2e03WkIUccftA/4sFh8cPzthWhASBdo85eRNwwRJLNwE45xrhw5fj2chl9/CGJzm6fIOUmegSefqmVYA3+yv0vHrGl3byOpLHsg4g3g= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763183284; c=relaxed/simple; bh=d/Vn5WVMBPfGDLR6GqBlFrHlL5U3hUj3ElSZZMRUQNM=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=kkU/xNo+XaKZ60K89UShvjNeRAi5UXdqZND5PgTxNj6o/+HYWNbEF+LwbIeLXNBOqXsYv69LvYi8R1P/EC9haeWJ0kyOdLb3gXI6pcoTVzUY8hxYc9MCRQivZvwroNnySaQnP9fZWI9X7eX7h+GmkPwjCBbFoiKPP+85FgLyWJA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=infradead.org; spf=none smtp.mailfrom=infradead.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b=Aec3IxiE; arc=none smtp.client-ip=90.155.50.34 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=infradead.org Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=infradead.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="Aec3IxiE" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=99bQhguiuvazJLFnjKQ96ejx9/UPWFkM7J+BT7DI66A=; b=Aec3IxiEL5092Gm6TG0Pk9XJ55 glHK9plEA75MzUf8Zz6BcJ+T0Mo1EwBxc/o7F2fmQnpI60Zv8fbMqg9InpFwqoK1/4pyRoHTeed1I 8eee0tqD8pGMS0L6C+r8JjsTOh5AGFpy/JX0lMCcrt0GEJFwFld7rpqESA9UFgfxLTvC2TH6onFXF qs75PU/i3yohNvWalhAieys0pTsDh0jIq5enKAr1n+wCakJlEE4KLW9S3MMKX6sbKfACfUIA5yYRQ lyoQDeD+8HnTjCoTF1RPznuPVZzAhK2M3pjgcNeHJlFVyG/CWxOQ8zn/fjQiVt/dMnSedsHLUZBwV 78bvpMrg==; Received: from willy by casper.infradead.org with local (Exim 4.98.2 #2 (Red Hat Linux)) id 1vK8Vl-0000000APIW-0vnk; Sat, 15 Nov 2025 05:07:45 +0000 Date: Sat, 15 Nov 2025 05:07:45 +0000 From: Matthew Wilcox To: Wei Yang Cc: "David Hildenbrand (Red Hat)" , akpm@linux-foundation.org, lorenzo.stoakes@oracle.com, Liam.Howlett@oracle.com, vbabka@suse.cz, rppt@kernel.org, surenb@google.com, mhocko@suse.com, ziy@nvidia.com, baolin.wang@linux.alibaba.com, npache@redhat.com, ryan.roberts@arm.com, dev.jain@arm.com, baohua@kernel.org, lance.yang@linux.dev, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org Subject: Re: [PATCH] mm/huge_memory: consolidate order-related checks into folio_split_supported() Message-ID: References: <20251114075703.10434-1-richard.weiyang@gmail.com> <827fd8d8-c327-4867-9693-ec06cded55a9@kernel.org> <20251114150310.eua55tcgxl4mgdnp@master> <64b43302-e8cc-4259-9fa1-e27721c0d193@kernel.org> <20251115025109.yerb7gbty4h7h63s@master> Precedence: bulk X-Mailing-List: linux-fsdevel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20251115025109.yerb7gbty4h7h63s@master> On Sat, Nov 15, 2025 at 02:51:09AM +0000, Wei Yang wrote: > I am not 100% for sure. While if we trust it returns 0 if folio doesn't > support large folio, I am afraid we can trust it returns correct value it > supports. Or that would be the issue to related file system. > > To be honest, I am lack of the capability to investigate all file system to > make sure this value is properly setup. Maybe you should just give up on this instead of asking so many questions, misunderstanding the answers, and sending more patches full of mistakes?