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Petersen" Organization: Oracle Corporation References: <20200102075315.22652-1-sblbir@amazon.com> <20200102075315.22652-6-sblbir@amazon.com> Date: Tue, 07 Jan 2020 22:15:00 -0500 In-Reply-To: (Balbir Singh's message of "Tue, 7 Jan 2020 22:28:29 +0000") Message-ID: User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/26.1.92 (gnu/linux) MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9493 signatures=668685 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=0 malwarescore=0 phishscore=0 bulkscore=0 spamscore=0 mlxscore=0 mlxlogscore=933 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1911140001 definitions=main-2001080026 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9493 signatures=668685 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=994 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1911140001 definitions=main-2001080026 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200107_191509_961085_F6C97F74 X-CRM114-Status: GOOD ( 12.15 ) X-BeenThere: linux-nvme@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: "axboe@kernel.dk" , "Chaitanya.Kulkarni@wdc.com" , "martin.petersen@oracle.com" , "mst@redhat.com" , "jejb@linux.ibm.com" , "linux-kernel@vger.kernel.org" , "linux-nvme@lists.infradead.org" , "linux-block@vger.kernel.org" , "Sangaraju, Someswarudu" , "hch@lst.de" Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-nvme" Errors-To: linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org Balbir, >> We already emit an SDEV_EVT_CAPACITY_CHANGE_REPORTED event if device >> capacity changes. However, this event does not automatically cause >> revalidation. > > The proposed idea is to not reinforce revalidation, unless explictly > specified (in the thread before Bob Liu had suggestions). The goal is > to notify user space of changes via RESIZE. SCSI sd can opt out of > this IOW, I can remove this if you feel > SDEV_EVT_CAPACITY_CHANGE_REPORTED is sufficient for current use cases. I have no particular objection to the code change. I was just observing that in the context of sd.c, RESIZE=1 is more of a "your request to resize was successful" notification due to the requirement of an explicit userland action in case a device reports a capacity change. -- Martin K. Petersen Oracle Linux Engineering _______________________________________________ linux-nvme mailing list linux-nvme@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-nvme