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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id B363CD0D141 for ; Wed, 7 Jan 2026 17:17:29 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 101E06B0092; Wed, 7 Jan 2026 12:17:29 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 0E0106B0093; Wed, 7 Jan 2026 12:17:29 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 00C5F6B0095; Wed, 7 Jan 2026 12:17:28 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0015.hostedemail.com [216.40.44.15]) by kanga.kvack.org (Postfix) with ESMTP id E1E406B0092 for ; Wed, 7 Jan 2026 12:17:28 -0500 (EST) Received: from smtpin28.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay02.hostedemail.com (Postfix) with ESMTP id 8FACF13AB42 for ; Wed, 7 Jan 2026 17:17:28 +0000 (UTC) X-FDA: 84305824176.28.9EB3D70 Received: from tor.source.kernel.org (tor.source.kernel.org [172.105.4.254]) by imf07.hostedemail.com (Postfix) with ESMTP id F3C9F40002 for ; Wed, 7 Jan 2026 17:17:26 +0000 (UTC) Authentication-Results: imf07.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=eNubg6mC; spf=pass (imf07.hostedemail.com: domain of helgaas@kernel.org designates 172.105.4.254 as permitted sender) smtp.mailfrom=helgaas@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1767806247; h=from:from:sender: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: in-reply-to:in-reply-to:references:dkim-signature; bh=qqRRXfsnDn/JT992sHlX9c5HhYEqI89XeJWo7L/gqTk=; b=xxOnP+VCwuHBIZIcEtfRvQTpCh00p80Qr5ZLwq6t/aVxJCFXaZT8nD8VU743U5byvFsATz twAEHfGKqKbO5Mv9seW3VctHtMa1ZTLGG5H0ZU5kY3yAd4w23gNqHpjW9Hxwg8+JtkaSHx QSunv66qUjxdrr8/3FCwOmjl0LKBeug= ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1767806247; a=rsa-sha256; cv=none; b=eYIQpLc5Q8JHib3LpCnNfExgOYH7LchLaBAuIjy3mh8/H5/S19NfV16us1qEGnJvozPFg2 29EtkhGq4PeIB7BpDt45IovQpbvmSB6t8UuV0xczwd5ak0IHN5x0YRI8ptVVuiDMSBnEg7 b+SRV56aOriv38hKnB7zvkTnLt5Htt8= ARC-Authentication-Results: i=1; imf07.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=eNubg6mC; spf=pass (imf07.hostedemail.com: domain of helgaas@kernel.org designates 172.105.4.254 as permitted sender) smtp.mailfrom=helgaas@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by tor.source.kernel.org (Postfix) with ESMTP id 5471E60007; Wed, 7 Jan 2026 17:17:26 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id D80D5C4CEF1; Wed, 7 Jan 2026 17:17:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1767806246; bh=q4ABnJ3CuJh6SWMrNmKQBlZ1gSO4Xo85FUt+DD5A26g=; h=Date:From:To:Cc:Subject:In-Reply-To:From; b=eNubg6mCK0SobRhjYoJFNql7uzoEIcWdOyZJ+7syVmoIAFPWxpQ5qk1OOcXtWvMZ/ EbPHNXCZGtKZWWLsyI8zNvbSgvEieOwFWos8HvgZ4qWEKGQTKr05nmNdPviq5otgrV JoQ/n69F/t8qi0aHv/HswTkB3At6+u3ybtrUr1olX76MWaOP4a8ReA8a6ROjFZW+WV QJ2qg+4PSGtZcaScVyLanjOBFEZqkgn8fNRL3vAt6Z6WgA/y3ZaRgAa8awY6iNpQcY 4Ye4/PyvwQpPnPzETDMuanANGjYLf2TXtc13gr512AogQUIbY3aQO3Wdt+503UOuhx yoqZd+rSkrJdg== Date: Wed, 7 Jan 2026 11:17:24 -0600 From: Bjorn Helgaas To: Christoph Hellwig Cc: Logan Gunthorpe , Hou Tao , linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, linux-mm@kvack.org, linux-nvme@lists.infradead.org, Bjorn Helgaas , Alistair Popple , Leon Romanovsky , Greg Kroah-Hartman , Tejun Heo , "Rafael J . Wysocki" , Danilo Krummrich , Andrew Morton , David Hildenbrand , Lorenzo Stoakes , Keith Busch , Jens Axboe , Sagi Grimberg , houtao1@huawei.com Subject: Re: [PATCH 02/13] PCI/P2PDMA: Fix the warning condition in p2pmem_alloc_mmap() Message-ID: <20260107171724.GA432074@bhelgaas> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260107143942.GB14904@lst.de> X-Stat-Signature: s51bam3diqqrrqdwmksbffd78ig7geya X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: F3C9F40002 X-Rspam-User: X-HE-Tag: 1767806246-350022 X-HE-Meta: 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 lNARvV7N YsGDvd/JpgB5r5rCOxJjAxEV4upn8Tecpy2RfgDreVxdHQ8BBZlczZ68Q5KM9KbMaxE5YocyY8i2h1XHLKGOWrLrK2tX//+WCud2HYteZbH/yw+sWzqonVvHQvZZqFHsrI3iRBQ2jEKyRjnnw8uJuMG522PBSJEd0Z0xhXI/lA3AVO8StEp4mu29L3eJg7OSOj2+dghTLghCVl29XVPiEfXm5v01yDoDNZRTv9dZPE95Fn0gtjgIolaDXw3LgGshpEsRzFwdy0rtOvIcvImwZqv47EOmj8tpIWCxSFxZQswtfHIBLVcvEp4m/wjClZyzxVvHbqh20IpDqfAtJ884iNapbXwYTInxM+bQB8us5zdKXcFOc3qw4DJo0JSpmnKn/7e+g X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Wed, Jan 07, 2026 at 03:39:42PM +0100, Christoph Hellwig wrote: > On Mon, Dec 22, 2025 at 09:50:18AM -0700, Logan Gunthorpe wrote: > > > Fixes: b7e282378773 ("mm/mm_init: move p2pdma page refcount initialisation to p2pdma") > > > Signed-off-by: Hou Tao > > > > Thanks for the fix > > > > Reviewed-by: Logan Gunthorpe > > Can we get these fixes queued up ASAP while discussing the new > feature? I assume you mean the first two patches: PCI/P2PDMA: Release the per-cpu ref of pgmap when vm_insert_page() fails PCI/P2PDMA: Fix the warning condition in p2pmem_alloc_mmap() I can certainly queue these up. The second is a warning fix, and the first fixes a hang that has apparently been around since v6.2 (7e9c7ef83d78 ("PCI/P2PDMA: Allow userspace VMA allocations through sysfs")). Given that, I would ordinarily target the v6.20 merge window, but the "ASAP" suggests more urgency. Do you want one or both for v6.19? Bjorn