From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=91.218.175.6 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1792740794; b=LDw6kISzemjB5yTWTLC7jAD9K7biEii754a/BnqWpalHSOc98BBHL+KKiAQzBGch11eQ wBX8LVA1puLY8U6uNwwvAIcw5Lqgyuc2VPDv3FHp86dEMc6JrMg8dgNzErH0GhJE+D62q u5D+f+wLMw8N8FOjgL8XJvPmKrtTI9UhlMtd7med2wugv4h4gs0MSb9d5tPAg5JQVafR5 kIy8ABDDgCynP6CPicr/MvCCNZLhFmdqnnQy3XSPtVQY4VV58rdhIV+yf3m52zc09zuhs KpyKY3aa61fGdbFs4fJMtqU20jdPsHEUvJOnZTJ9/awSVS4wAL1lCqwoZARK4q4PRDQ== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1792740794; h=DMARC-Filter:X-Envelope-To:DKIM-Signature:X-Envelope-To:Received: X-Mizu-Trace-ID:X-Migadu-Flow:From:To:Cc:Subject:Date:Message-ID: X-Mailer:In-Reply-To:References:MIME-Version:Content-Type: Content-Transfer-Encoding; bh=GCPeXdVtsAIGZmNIgcd/gdVcV03xEPsGBvi1mGdnz00=; b=wArpKe/+Czjs3WUxcX+BTq3QYIzE3z55p64LuJNknmzDtw+Ad0VxpTPhMkJCPR3BVgWl UTYmVogVOgz0kdEXNgr6WX4wm6SuJGKKPBY2lQ3Fb5mXvaTrbbdsLsOQARUWC6iHh7B8/ n5+EE53EubLwHrUsEfze3dPZ/6mPCDBA/KYzeVN/JaB6LBvRfnSnZ3qqcw1MzgkC4V1QT gkbnMy+aAblfeHDdgpFOW5NLZTNKhdfI+8ik6lBTbt/sRXc41cKLiflqQoo6vUqmC93Q0 FmXbOtu0w5LwIXFGvO+iyFSMfWvFP898Pne8tIoGFH6EvoI+vus+OWdeyX5/V35KDZg== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass header.d=linux.dev header.i=@linux.dev header.a=rsa-sha256 header.s=key1 header.b=EVbRIxhR; arc=none smtp.remote-ip=91.218.175.6 Received: from mta0.migadu.com (out-6.mta0.migadu.com [91.218.175.6]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 35840606A31A for ; Fri, 23 Oct 2026 07:33:12 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org 35840606A31A Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key, unprotected) header.d=linux.dev header.i=@linux.dev header.a=rsa-sha256 header.s=key1 header.b=EVbRIxhR X-Envelope-To: linux-kernel@vger.kernel.org DKIM-Signature: a=rsa-sha256; bh=0k5lukGRbTSNqdymG8Q7jy3MBEvP6PLNPDsNCvsgCNU=; c=simple/simple; d=linux.dev; h=from:to:subject:date:message-id:mime-version:content-type; s=key1; t=1792740790; v=1; x=1793345590; b=EVbRIxhRd2WKhWwLCBLWHeEPX4x+INc6XdqV7wInMLUbJnSQGRK7n9CATxTQrslUzhy8jD6p z64DZ2fv3cFW5Z+aTWz+EAbjexpgWsHMIAMTifzjcIixWAcDWR8az8lYvkPhBK7K/SutmBv8Css foFRytcIx1nZTiuV4hr3KABg= X-Envelope-To: linux-kernel@vger.kernel.org Received: by smtp.migadu.com with ESMTPS id 0fec9d0276b536b5; Fri, 23 Oct 2026 07:33:10 +0000 X-Mizu-Trace-ID: 0fec9d0276b536b5 X-Migadu-Flow: FLOW_OUT From: Lance Yang To: songmuchun@bytedance.com Cc: osalvador@suse.de, akpm@linux-foundation.org, rppt@kernel.org, qi.zheng@linux.dev, lance.yang@linux.dev, jthoughton@google.com, david@kernel.org, muchun.song@linux.dev, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 12/12] mm: hugetlb_vmemmap: make vmemmap PTE conversion folio-oriented Date: Fri, 23 Oct 2026 15:33:03 +0800 Message-ID: <20261023073303.66682-1-lance.yang@linux.dev> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20261020115824.823278-11-songmuchun@bytedance.com> References: <20261020115824.823278-11-songmuchun@bytedance.com> X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit On Tue, Oct 20, 2026 at 07:58:24PM +0800, Muchun Song wrote: >Converting a folio's vmemmap mappings from PMDs to PTEs is a per-folio >operation, but the current interface exposes a raw address range and >hardcodes deferred TLB flushing. This splits the common mechanism >across layers and couples it to the HugeTLB batching policy. > >Make the folio the unit of PTE conversion and let callers select the TLB >flush policy through the folio-oriented interface. This keeps >HugeTLB-specific eligibility and batching outside the common operation. > >No functional change intended. > >Signed-off-by: Muchun Song >--- Nothing jumped out at me, so: Reviewed-by: Lance Yang