From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id DF361E9A048 for ; Thu, 19 Feb 2026 15:00:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=mP4ZC0TEh8C+GrS8QKMlO+6aITosKr4Nbnd175LCzeQ=; b=FVGETrw9MEafrmVLzhHKpbaMaN o/UwKUXLFNBQ4MFOVD6hjmysE6wU7v4vzBw0PFTh87a+xOwINsc8MjPTgItVfUBn/zqWe0dstthw9 r+9nApe9zsuKvuFDU0+fXGfi6IMvVRM6KgtUtKrovihrV1w2O7yEYkn+z+966UUwd39rmcELOlN/D ybMKXDIWbp3kXf+LPnyv4zebZ2i+8jakIQnqG25iSmIqRlHYTZT86LoqH0nicdv5tqMrVbqzrGxOZ 5GPsvigquSfCOE5JVnhfGvWieq2RpK2QDNgsI+4P75am1pWhElS9bz/QeEw8GR7ux8yNxk/hp6KKK 5DGA22gg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1vt5WP-0000000BUT5-2OcB; Thu, 19 Feb 2026 15:00:53 +0000 Received: from casper.infradead.org ([2001:8b0:10b:1236::1]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1vt5WO-0000000BUSm-0nbX for linux-nvme@bombadil.infradead.org; Thu, 19 Feb 2026 15:00:52 +0000 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=mP4ZC0TEh8C+GrS8QKMlO+6aITosKr4Nbnd175LCzeQ=; b=sZCLI2iwwtDfv00ulHbwZN08JS TG+1RH2RthzkUqgNN3LdKJHRV3O9/7TFc3cpinGW4bWdeq7CYbRKtkueZoVdj+Up7Rs38+ep+1i+Z 5hIeas+id064CMRlUo7sS6M36RAekYqpHKTzCZhGm7hNJBWOzbvMfV7uXHHpewouWOGE6pC2YEF1n JfdVeuc+Tc+On2OpMsWmvb6GiQpa07Q/Blyb2FrKdWGSW45CIaCKszXUX5wKIkXwvoBX3WrIVy7Tc QYGRXMmIa97PF2633C1GJfvVDb3SJaPZUSb67gYcj0N86jsPD/BkaK8MqgdkHJFobr7stM+99RX7T Gq97demg==; Received: from willy by casper.infradead.org with local (Exim 4.98.2 #2 (Red Hat Linux)) id 1vt5WL-00000007lC1-3YKs; Thu, 19 Feb 2026 15:00:49 +0000 Date: Thu, 19 Feb 2026 15:00:49 +0000 From: Matthew Wilcox To: Bart Van Assche Cc: Hannes Reinecke , lsf-pc , "linux-nvme@lists.infradead.org" , "linux-block@vger.kernel.org" , linux-mm@kvack.org Subject: Re: [LSF/MM/BPF TOPIC] Memory fragmentation with large block sizes Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-BeenThere: linux-nvme@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-nvme" Errors-To: linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org On Thu, Feb 19, 2026 at 06:53:28AM -0800, Bart Van Assche wrote: > Additionally, why is contiguous memory required for block sizes > larger than the page size? Does this perhaps come from the VFS layer? > If so, is this something that can be fixed? No.