Christian Schoenebeck <linux_oss@xxxxxxxxxxxxx> wrote: > > (1) Enable large folio support for 9p. This is handled entirely by > > netfslib and is already supported in afs. I wonder if we should limit > > the maximum folio size to 1MiB to match the maximum I/O size in the 9p > > protocol. > > The limit depends on user's 'msize' 9p client option and on the 9p transport > implementation. The hard limit with virtio transport for instance is currently > just 500k (patches for virtio 4MB limit fetching dust unfortunately). Okay. Is that 500KiB or 512Kib? > Would you see an advantage to limit folio size? I mean p9_client_read() etc. > are automatically limiting the read/write chunk size accordingly. For reads not so much, but for writes it would mean that a dirty folio is either entirely written or entirely failed. I don't know how important this would be for the 9p usecases. David
