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Sat, 02 May 2026 08:49:53 -0700 (PDT) Date: Sat, 2 May 2026 16:49:51 +0100 From: Gregory Price To: Matthew Wilcox Cc: "Ritesh Harjani (IBM)" , linux-fsdevel , Amir Goldstein , Christian Brauner , Jan Kara , lsf-pc , Bharata B Rao , Donet Tom , Aboorva Devarajan , linux-mm@kvack.org, Ojaswin Mujoo Subject: Re: [LSF/MM/BPF BoF Session] Numa-Aware Placement for Page Cache Pages Message-ID: References: Precedence: bulk X-Mailing-List: linux-fsdevel@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 Sat, May 02, 2026 at 03:57:19PM +0100, Gregory Price wrote: > On Thu, Apr 30, 2026 at 02:15:19PM +0100, Matthew Wilcox wrote: > > fd = open() > buf = mmap(fd, ...) > mbind(buf, device_node) > /* fault file pages directly onto device memory */ > maybe more explicitly, something like this fcntl(fd, F_SET_FILE_NUMA_NODE, gpu_nid); /* pref node */ mbind(addr, size, MPOL_BIND, ..., MOVE_ALL); /* move existing */ madvise(addr, size, MADV_POPULATE_READ); /* fault the rest */