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 EBEE781ABA; Wed, 24 Jan 2024 17:55:51 +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=1706118953; cv=none; b=XiQnz4ZymEXawUI48HVOZC7vUDzJX/LvT4zzTNOmHz15lClmilYHZuS+fOuNvahs+uP2j11dIpSiNE6euuR+kdrz8tqe/GJoBb/VmPGkRW6GYxzhAsz9NOvBus+q2WKdW/YuM2JfF//G961QFX6mmbAz4nH9sSLTfxxGY3FQ2GQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706118953; c=relaxed/simple; bh=8nHJpxze9i3uCOhGTrGvmXB+FRPyyXp/F8Bkilw7L18=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=m/txCAkE/Rb+Qk9jTKJAMGZVCsVY/W5S2/d54ZGeAyxfhtwY6TNvaVa3aS0ososQeC9QnZDT+8jQsnRVWwFrgdJqvPf4NYBxPwlLXuHlQZ+Gfi+GMdy552Mw3PkdW17grYkBfAhggsTSvYbWLDPspwCkQYncJTEyuMOrbaH4Z/M= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (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=g4Gbu+QO; arc=none smtp.client-ip=90.155.50.34 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (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="g4Gbu+QO" 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=8nHJpxze9i3uCOhGTrGvmXB+FRPyyXp/F8Bkilw7L18=; b=g4Gbu+QOZjcYDq1GX/CDd67xHQ 1MS2y9fFaTAAJ6vO8sFRAVyk/JnxX4hhNK3I6E7t0IGS/3oGdUQQc2wVXu7jLTM4KIf7Akg27WWex +izhhj1Ds/mX2I0vTtpSsOIaG4EU1c/T4eGoZGcZaJSaP1cPW6I/bESRrkHVZ17kK1sstMEANhNzm JgFmlZgjGUTRWuNS4HllcmC5yUs5YnmBV0Om9LJjAN2fS2+9dknKqY7yhnIN0B8JnY3J1RRmw4f2B OBae5YKcDNoYlXZs7ihRQgOiTff75Oww/7n+OnE/AGJZFp+JwmhmUCoUwdieCrHNXh8DIuXVWOadO VcW8VyQA==; Received: from willy by casper.infradead.org with local (Exim 4.97.1 #2 (Red Hat Linux)) id 1rShTW-00000007Lpb-2ECT; Wed, 24 Jan 2024 17:55:46 +0000 Date: Wed, 24 Jan 2024 17:55:46 +0000 From: Matthew Wilcox To: "Christoph Lameter (Ampere)" Cc: David Rientjes , Pasha Tatashin , Sourav Panda , lsf-pc@lists.linux-foundation.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-block@vger.kernel.org, linux-ide@vger.kernel.org, linux-scsi@vger.kernel.org, linux-nvme@lists.infradead.org, bpf@vger.kernel.org Subject: Re: [LSF/MM/BPF TOPIC] State Of The Page Message-ID: References: Precedence: bulk X-Mailing-List: linux-ide@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: On Wed, Jan 24, 2024 at 09:51:02AM -0800, Christoph Lameter (Ampere) wrote: > Can we come up with a design that uses a huge page (or some arbitrary page > size) and the breaks out portions of the large page? That way potentially > TLB use can be reduced (multiple sections of a large page use the same TLB) > and defragmentation occurs because allocs and frees focus on a selection of > large memory sections. Could I trouble you to reply in this thread: https://lore.kernel.org/linux-mm/Za6RXtSE_TSdrRm_@casper.infradead.org/ where I actually outline what I think we should do next.