On 4/1/24 16:43, Amir Goldstein wrote: > >> >> Can you not read/write without interacting with the server? Or do you >> mean FOPEN_DIRECT_IO sends some file ops to the server even in >> passthrough mode? > > FOPEN_DIRECT_IO sends write() and read() to the server even in > passthrough mode. > >> At the moment I'm tempted to follow the same >> mechanics passthrough is using. The only exception would be possibly >> tossing back to the server, which I mentioned above. That'd only >> happen for, say, read, if we're not under FOPEN_DIRECT_IO. I've not >> looked too closely at FOPEN_DIRECT_IO. In Fuse bpf we currently have >> bpf mode taking priority. Are there any email threads I should look at >> for more background there? > > Maybe this patch set: > https://lore.kernel.org/linux-fsdevel/20240208170603.2078871-1-amir73il@xxxxxxxxx/ > > Bernd and I worked on it together as a prerequisite to fuse passthrough. > Benrd has some followup direct_io re-factoring patches. They are in this branch https://github.com/bsbernd/linux/commits/fuse-dio-v5/ Going to rebase it to 6.9 this week and will send it out then. I had been rather occupied with with ddn internal work and didn't have the time since February... Thanks, Bernd
