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[34.124.168.21]) by smtp.gmail.com with ESMTPSA id 6a1803df08f44-90a921e6f51sm20444946d6.8.2026.08.14.07.37.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 14 Aug 2026 07:37:27 -0700 (PDT) Date: Fri, 14 Aug 2026 14:37:21 +0000 From: Pranjal Shrivastava To: linux-nfs@vger.kernel.org, Trond Myklebust , Anna Schumaker Cc: Chuck Lever , Jeff Layton , linux-kernel@vger.kernel.org, Christoph Hellwig , Logan Gunthorpe , Jason Gunthorpe , linux-pci@vger.kernel.org, linux-rdma@vger.kernel.org, Shivaji Kant Subject: Re: [PATCH v4 0/5] nfs: modernize direct I/O path Message-ID: References: <20260810195040.2877784-1-praan@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: On Mon, Aug 10, 2026 at 08:38:49PM +0000, Pranjal Shrivastava wrote: > On Mon, Aug 10, 2026 at 07:50:34PM +0000, Pranjal Shrivastava wrote: > > Modernize the NFS Direct I/O path as a preparatory step to enable PCI > > Peer-to-Peer DMA (P2PDMA) support. Following feedback on the initial > > RFC [1], the modernization and architectural changes are split into > > different series. Additionally, based on the discussion in the v2 [2] > > of this series, the migration of NFS Direct I/O to folios would be > > handled in a separate follow-up series. > > > > Currently, NFS O_DIRECT relies on the legacy iov_iter_get_pages_alloc2() > > API which does not support the pinning requirements for P2P memory. > > The implementation moves NFS to the modern iov_iter_extract_pages() API. > > > > [...] > > I'm calling out a few typos / non-code mistakes: > > 1. On the cover letter I missed updating the subject to v5 for this series > (the changelog is noted below). > > 2. I also accidentally dropped Christoph's Reviewed-by tags on patches > 1, 2, and 3 during the rebase (given while reviewing v4 [1]). > > Everything else in the series is correct as per the v5 changelog. > Please let me know what the right etiquette is? Shall I resend the series? > > Apologies for the noise! > Quick update: I've posted a v6 [1] with fixes for unpin bugs reported by Sashiko [2] and with R-bs from Christoph that were dropped mistakenly in v5. Thanks, Praan [1] https://lore.kernel.org/all/20260814143255.861084-1-praan@google.com/ [2] https://sashiko.dev/#/patchset/20260810195040.2877784-1-praan%40google.com