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Mon, 10 Aug 2020 20:24:32 +0000 Received: from pps.filterd (aserp3020.oracle.com [127.0.0.1]) by aserp3020.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 07AKDFfI026503; Mon, 10 Aug 2020 20:22:32 GMT Received: from aserv0121.oracle.com (aserv0121.oracle.com [141.146.126.235]) by aserp3020.oracle.com with ESMTP id 32t5y1vvy1-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 10 Aug 2020 20:22:32 +0000 Received: from abhmp0005.oracle.com (abhmp0005.oracle.com [141.146.116.11]) by aserv0121.oracle.com (8.14.4/8.13.8) with ESMTP id 07AKMU2K016832; Mon, 10 Aug 2020 20:22:31 GMT Received: from [192.168.2.112] (/50.38.35.18) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Mon, 10 Aug 2020 13:22:30 -0700 Subject: Re: [PATCH 01/10] mm/hugetlb: not necessary to coalesce regions recursively To: Wei Yang , akpm@linux-foundation.org Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org References: <20200807091251.12129-1-richard.weiyang@linux.alibaba.com> <20200807091251.12129-2-richard.weiyang@linux.alibaba.com> From: Mike Kravetz Message-ID: <7ef97c47-f193-7664-fbcc-21fbaa27c26a@oracle.com> Date: Mon, 10 Aug 2020 13:22:29 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.10.0 MIME-Version: 1.0 In-Reply-To: <20200807091251.12129-2-richard.weiyang@linux.alibaba.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9709 signatures=668679 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 spamscore=0 malwarescore=0 suspectscore=0 mlxscore=0 adultscore=0 bulkscore=0 phishscore=0 mlxlogscore=959 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2006250000 definitions=main-2008100138 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9709 signatures=668679 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 phishscore=0 clxscore=1015 suspectscore=0 mlxlogscore=957 priorityscore=1501 adultscore=0 impostorscore=0 spamscore=0 bulkscore=0 mlxscore=0 lowpriorityscore=0 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2006250000 definitions=main-2008100139 X-Rspamd-Queue-Id: A658B180143C0 X-Spamd-Result: default: False [0.00 / 100.00] X-Rspamd-Server: rspam01 X-Bogosity: Ham, tests=bogofilter, spamicity=0.001593, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On 8/7/20 2:12 AM, Wei Yang wrote: > Per my understanding, we keep the regions ordered and would always > coalesce regions properly. So the task to keep this property is just > to coalesce its neighbour. > > Let's simplify this. > > Signed-off-by: Wei Yang Thanks! It is unfortunate that the region management code is difficult to understand. Reviewed-by: Mike Kravetz -- Mike Kravetz