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bh=gt+A1Wr/G1h4kMqCbndYt8VkS1q16uqqs8XxNPh20sI=; b=iwNXbSUiiNxqSIy9iArCg9yLBLmH+HEdZ2ppEYz0ObpKBKZl/SbxMFbdHybiL8fwe0QbU+ bjKTq+k0dRWQSKXzwCB8bR5vmqGMJiJhBDHbkGwRDMsvPLEOPM0mkRQwF7ujF2ivB3CPUW 71bVjFaBOP9XdaJXTEfo1Fyw7OkOhVU= ARC-Authentication-Results: i=1; imf27.hostedemail.com; dkim=pass header.d=linux-foundation.org header.s=korg header.b=W27ryESd; spf=pass (imf27.hostedemail.com: domain of akpm@linux-foundation.org designates 172.105.4.254 as permitted sender) smtp.mailfrom=akpm@linux-foundation.org; dmarc=none Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by tor.source.kernel.org (Postfix) with ESMTP id 561C76001D; Wed, 1 Jul 2026 19:27:47 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8116E1F000E9; Wed, 1 Jul 2026 19:27:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux-foundation.org; s=korg; t=1782934067; bh=gt+A1Wr/G1h4kMqCbndYt8VkS1q16uqqs8XxNPh20sI=; h=Date:From:To:Cc:Subject:In-Reply-To:References; b=W27ryESdogM0DUhuoe4CFNiTEnfMsAf7nIapQUhol3l26zWPsJG4QpYAYOUBEeFcT G1oVKlXUp7n7zScO85y5bE2F4oxPbyLSNqtZ+igp1RjLYNby6QRHFtm1l1eV7PZom4 5ruolwLIppEy/azavW4HVkC3DXz1+iDieQ3dARC8= Date: Wed, 1 Jul 2026 12:27:45 -0700 From: Andrew Morton To: Zi Yan Cc: Usama Arif , apopple@nvidia.com, byungchul@sk.com, david@kernel.org, gourry@gourry.net, joshua.hahnjy@gmail.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, matthew.brost@intel.com, rakie.kim@sk.com, ying.huang@linux.alibaba.com, shakeel.butt@linux.dev, hannes@cmpxchg.org, kernel-team@meta.com, sashiko-bot Subject: Re: [PATCH] mm/migrate_device: pin large folios before splitting Message-Id: <20260701122745.2bfab3347691b658fb93f601@linux-foundation.org> In-Reply-To: <78C557ED-3CF3-4558-9BA4-C43B30E63F67@nvidia.com> References: <20260701140638.840773-1-usama.arif@linux.dev> <78C557ED-3CF3-4558-9BA4-C43B30E63F67@nvidia.com> X-Mailer: Sylpheed 3.8.0beta1 (GTK+ 2.24.33; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Stat-Signature: ymg7da5hzntrwzkfi7eseg7xxap7z148 X-Rspam-User: X-Rspamd-Queue-Id: 08EF440003 X-Rspamd-Server: rspam02 X-HE-Tag: 1782934067-585356 X-HE-Meta: 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 nCauiBJ2 XKrcktmQOHev8UrtG+0PoPvqmM/ZUQVh2VUzbRVaE3Eh5h7WZw9Q/o7Pguc/TraHEwTPNW/+pfqosMjlbt9H0Tjg2Czi7H+smHHQu/tVzNjSMvGZe+sbbewF1q4yI3f9XfOK2Tkaj2BJMPwrGXnaRSNO4WQpGJwuXnnjkSQSjzrHooptDrkW9oY4EUhRY2Q0+oYvY6+QZdoAFz+GCbYwT2TlEztHE7Y31qbCDsOlHuvcelbqE61y6gbUEz417/AQa0OHo9GLWrz8q9/qqNNdNB43SJ8DOAkGYwApb/OKu4duCFwqOZwbletUQIr1CVmdvPmASXAGGenO/vdYILTyPr0l3hg4HAfkuWuOIL934rBrXSokI0hGT895v6Sw9j+xSmDD2xtetybTr1nM= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Wed, 01 Jul 2026 13:02:10 -0400 Zi Yan wrote: > LGTM. Like David said, the comments might not be needed. Thanks. I like the comments! They may be uninteresting to those who are already familiar with these things, but they aren't the target audience. How are others to become familiar, if not by this?