On 18 Oct 2023, at 15:32, Anna Schumaker wrote: > Hi Ced, > > On Sat, Oct 14, 2023 at 9:08 AM Cedric Blancher > <cedric.blancher@xxxxxxxxx> wrote: >> >> Good afternoon! >> >> Since which kernel versions (NFS server, NFS client) is NFSv4.2 >> READ_PLUS safely usable? > > Linux 6.2 for the server side and 6.6 for the client. > >> >> Also, could you make this a mount option, so people can turn this >> on/off per mount, instead of using a kernel build option for this? > > The eventual plan is to remove the kernel build option entirely. We > probably won't do a mount option, and just have it enabled by default > when using NFS v4.2. Anna, I'm still planning on either re-sending the patch you wrote to enable/disable optional features per-mount, or re-work it to make it file-per-feature as the sysfs creators intended. We need the option to toggle client's default per-server or per-mount. Ben