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[68.160.166.30]) by smtp.gmail.com with ESMTPSA id qd17-20020ad44811000000b005ddd27e2c0asm1358298qvb.36.2023.05.19.07.41.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 19 May 2023 07:41:33 -0700 (PDT) Date: Fri, 19 May 2023 10:41:31 -0400 From: Mike Snitzer To: Christoph Hellwig Cc: Sarthak Kukreti , dm-devel@redhat.com, linux-block@vger.kernel.org, linux-ext4@vger.kernel.org, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, Jens Axboe , "Michael S. Tsirkin" , Jason Wang , Stefan Hajnoczi , Alasdair Kergon , Brian Foster , Theodore Ts'o , Andreas Dilger , Bart Van Assche , "Darrick J. Wong" Subject: Re: [PATCH v7 0/5] Introduce provisioning primitives Message-ID: References: <20230518223326.18744-1-sarthakkukreti@chromium.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Spam-Status: No, score=-1.7 required=5.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,RCVD_IN_DNSWL_NONE,RCVD_IN_MSPIKE_H2, SPF_HELO_NONE,SPF_NONE,T_SCC_BODY_TEXT_LINE autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-ext4@vger.kernel.org On Fri, May 19 2023 at 12:09P -0400, Christoph Hellwig wrote: > FYI, I really don't think this primitive is a good idea. In the > concept of non-overwritable storage (NAND, SMR drives) the entire > concept of a one-shoot 'provisioning' that will guarantee later writes > are always possible is simply bogus. Valid point for sure, such storage shouldn't advertise support (and will return -EOPNOTSUPP). But the primitive still has utility for other classes of storage.