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 6110BD1F9CD for ; Thu, 4 Dec 2025 11:53:36 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id BE73B6B0011; Thu, 4 Dec 2025 06:53:35 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id B96DA6B0029; Thu, 4 Dec 2025 06:53:35 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id A865E6B002A; Thu, 4 Dec 2025 06:53:35 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0017.hostedemail.com [216.40.44.17]) by kanga.kvack.org (Postfix) with ESMTP id 9300D6B0011 for ; Thu, 4 Dec 2025 06:53:35 -0500 (EST) Received: from smtpin24.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay01.hostedemail.com (Postfix) with ESMTP id 87BDE52242 for ; Thu, 4 Dec 2025 11:53:33 +0000 (UTC) X-FDA: 84181628706.24.D6F8651 Received: from tor.source.kernel.org (tor.source.kernel.org [172.105.4.254]) by imf30.hostedemail.com (Postfix) with ESMTP id E0AD480002 for ; Thu, 4 Dec 2025 11:53:31 +0000 (UTC) Authentication-Results: imf30.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=l8F43iGu; spf=pass (imf30.hostedemail.com: domain of david@kernel.org designates 172.105.4.254 as permitted sender) smtp.mailfrom=david@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=1764849211; 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:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=QVCBV6gKtnQy2rEAfBDSKKvn4qBqj1x+UGLpOf8yJyo=; b=g9KJOps/cSAdSCqyBWMQSdPYlrbJ0/MqUqFJKiIIy9RjydYDdz3vup7xnIsOaIL/vWUoW5 inZLDDxos2ERO4uNexZV47UAA/9Uj4Idn46w6qvKu5ZwRdD7fQdgrJoLYzPKbWbJmfb8iT ro5f4KEirXEw2vBP/70eruuUvDXnus4= ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1764849211; a=rsa-sha256; cv=none; b=7v/25QPbPdV3y5rvCZD3/6tGgHbrhZcZPqvHbRjfpyCXM0w/iMPtwfsz8ZB89GED8eegrt speoziA1LZ2WF4zWQw2HlDcseDIc0hxhrj3/TApzR6S+hloevmHWdmNd12cJokXIt4EeLP fds699N/BMZW0/hEtVFY2Aj0fVGVL88= ARC-Authentication-Results: i=1; imf30.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=l8F43iGu; spf=pass (imf30.hostedemail.com: domain of david@kernel.org designates 172.105.4.254 as permitted sender) smtp.mailfrom=david@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 35ECD601E6; Thu, 4 Dec 2025 11:53:31 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8423DC4CEFB; Thu, 4 Dec 2025 11:53:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1764849210; bh=Zpl414Y6vefFz+0mGA9CipSOvbTehPYA0WM0ZAZ5yEc=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=l8F43iGu2V8NDUl3DIh/2+X2bfiJU3z4ZM3VULx8KpRVQtoH+xW7CH2tkww5ZTCxo Z732odFWqfzHNQy5SzNM5XixZWclVhNfUhvGgJiGbPutM3AwRHmsLfNCAboCSPDTP/ mQ1qAy91zph5RvCXiIten7mneAop/GvZWqVrT+sRJH1n488UuXQMywvv0E8xZPYpO8 hem4mPeZ8WDhirZ3INCR8Hs8TJNiMUf1+2/EkXzuyFkWiHk2/yA/ki9bTau+qinvtl uLvGed0JMtDUZ3H/ydu3YrDfOdvy/uR+aG5ySHHt6+QmCrIk7eopnc2uqCD/LCtR4b NGvDZU/gQZlqA== Message-ID: <0f08e893-6097-4ab1-8231-ac3304c51ee9@kernel.org> Date: Thu, 4 Dec 2025 12:53:18 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v5 08/12] mm: enable lazy_mmu sections to nest To: Anshuman Khandual , Kevin Brodsky , Alexander Gordeev Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, Andreas Larsson , Andrew Morton , Boris Ostrovsky , Borislav Petkov , Catalin Marinas , Christophe Leroy , Dave Hansen , "David S. Miller" , David Woodhouse , "H. Peter Anvin" , Ingo Molnar , Jann Horn , Juergen Gross , "Liam R. Howlett" , Lorenzo Stoakes , Madhavan Srinivasan , Michael Ellerman , Michal Hocko , Mike Rapoport , Nicholas Piggin , Peter Zijlstra , "Ritesh Harjani (IBM)" , Ryan Roberts , Suren Baghdasaryan , Thomas Gleixner , Venkat Rao Bagalkote , Vlastimil Babka , Will Deacon , Yeoreum Yun , linux-arm-kernel@lists.infradead.org, linuxppc-dev@lists.ozlabs.org, sparclinux@vger.kernel.org, xen-devel@lists.xenproject.org, x86@kernel.org References: <20251124132228.622678-1-kevin.brodsky@arm.com> <20251124132228.622678-9-kevin.brodsky@arm.com> <23dcf752-0b75-45a7-84f8-25bddf97af08-agordeev@linux.ibm.com> <703cbee6-a813-4970-9232-34ee91ed8961@arm.com> <2c2b3382-7bdb-41a9-b48e-4fa9a44312ba@arm.com> From: "David Hildenbrand (Red Hat)" Content-Language: en-US In-Reply-To: <2c2b3382-7bdb-41a9-b48e-4fa9a44312ba@arm.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Rspamd-Server: rspam08 X-Rspamd-Queue-Id: E0AD480002 X-Stat-Signature: x19z9ki474j4ckfnooq9ohw1zci78mci X-Rspam-User: X-HE-Tag: 1764849211-533182 X-HE-Meta: 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 0Y0Ljh6y LYOMjsfv/kcmzR+Kh3EhwmOKvqjDEdanqDry1q5JkpBIxlKXuF/kpGrpq8nA6QLTx1Y+z1INDRE2rYe5VTkWlUpbBmBOj8111JakD9DHS176PWPGDRP5ZAZ4/LVf9D+X7/aha5iWQ0Ict7ttk8VV1Nppx8MPqXijAI4o9vK+zRum3i+/P8r6dR8lPoPi2OBb4LnLuf4vtnhJvUkpec5AGjjtM7QQ/ZzD0maBr2Vw2tkDOO5d8LgvmqwWWqnylK/F2B/lz/kojWbpvA8yx5cSzsnHwHwG9HKhAopf0ybbiVB+a72MPlyOSWOvIdSpmpbXUghHMrEhkk+YjMOPhDkRX5HrMlijEfvuzEGgPrQbNzHggRhyc9vnFhum0vX4hFeyvoaTV+lBJXj5xWUk3cvIEHCyQZz77EGaodPGF 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 12/4/25 06:25, Anshuman Khandual wrote: > > > On 03/12/25 1:50 PM, Kevin Brodsky wrote: >> On 28/11/2025 14:55, Alexander Gordeev wrote: >>>> + * in_lazy_mmu_mode() can be used to check whether the lazy MMU mode is >>>> + * currently enabled. >>> The in_lazy_mmu_mode() name looks ambiguous to me. When the lazy MMU mode >>> is paused are we still in lazy MMU mode? The __task_lazy_mmu_mode_active() >>> implementation suggests we are not, while one could still assume we are, >>> just paused. >>> >>> Should in_lazy_mmu_mode() be named e.g. as in_active_lazy_mmu_mode() such >>> a confusion would not occur in the first place. >> >> I see your point, how about is_lazy_mmu_mode_active()? > > Agreed - is_lazy_mmu_mode_active() seems better. +1, I was scratching my head over this in previous revisions as well. -- Cheers David