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Sun, 15 Nov 2020 20:04:54 +0000 Received: from pps.filterd (aserp3030.oracle.com [127.0.0.1]) by aserp3030.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 0AFJxTsN048469; Sun, 15 Nov 2020 20:04:54 GMT Received: from userv0122.oracle.com (userv0122.oracle.com [156.151.31.75]) by aserp3030.oracle.com with ESMTP id 34trtjwg5f-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Sun, 15 Nov 2020 20:04:54 +0000 Received: from abhmp0012.oracle.com (abhmp0012.oracle.com [141.146.116.18]) by userv0122.oracle.com (8.14.4/8.14.4) with ESMTP id 0AFK4nlU032208; Sun, 15 Nov 2020 20:04:49 GMT Received: from [10.159.225.239] (/10.159.225.239) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Sun, 15 Nov 2020 12:04:49 -0800 Subject: Re: [PATCH v2 1/1] page_frag: Recover from memory pressure To: Matthew Wilcox Cc: linux-mm@kvack.org, netdev@vger.kernel.org, aruna.ramakrishna@oracle.com, bert.barbe@oracle.com, rama.nichanamatlu@oracle.com, venkat.x.venkatsubra@oracle.com, manjunath.b.patil@oracle.com, joe.jin@oracle.com, srinivas.eeda@oracle.com, stable@vger.kernel.org, linux-kernel@vger.kernel.org, akpm@linux-foundation.org, davem@davemloft.net, edumazet@google.com, vbabka@suse.cz References: <20201115065106.10244-1-dongli.zhang@oracle.com> <20201115121828.GQ17076@casper.infradead.org> From: Dongli Zhang Message-ID: Date: Sun, 15 Nov 2020 12:04:47 -0800 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: <20201115121828.GQ17076@casper.infradead.org> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9806 signatures=668682 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 adultscore=0 suspectscore=0 mlxscore=0 bulkscore=0 malwarescore=0 spamscore=0 mlxlogscore=911 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2011150129 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9806 signatures=668682 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=0 phishscore=0 adultscore=0 priorityscore=1501 bulkscore=0 clxscore=1015 mlxlogscore=925 malwarescore=0 mlxscore=0 spamscore=0 lowpriorityscore=0 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2009150000 definitions=main-2011150129 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 11/15/20 4:18 AM, Matthew Wilcox wrote: > On Sat, Nov 14, 2020 at 10:51:06PM -0800, Dongli Zhang wrote: >> + if (nc->pfmemalloc) { > > You missed the unlikely() change that Eric recommended. > Thank you very much. I missed that email. I will send v3. Dongli Zhang