On Mon, Nov 01, 2021 at 03:10:31PM -0400, Steve Dickson wrote: > > > On 11/1/21 14:39, Bruce Fields wrote: > >diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt > >index 91ba391f9b32..14bc3f0b0149 100644 > >--- a/Documentation/admin-guide/kernel-parameters.txt > >+++ b/Documentation/admin-guide/kernel-parameters.txt > >@@ -3243,6 +3243,19 @@ > > driver. A non-zero value sets the minimum interval > > in seconds between layoutstats transmissions. > >+ nfsd.inter_copy_offload_enable = > >+ [NFSv4.2] When set to 1, the server will support > >+ server-to-server copies for which this server is > >+ the destination of the copy. > >+ > >+ nfsd.nfsd4_ssc_umount_timeout = > >+ [NFSv4.2] When used as the destination of a > >+ server-to-server copy, knfsd temporarily mounts > >+ the source server. It caches the mount in case > >+ it will be needed again, and discards it if not > >+ used for the number of milliseconds specified by > >+ this parameter. > >+ > > nfsd.nfs4_disable_idmapping= > > [NFSv4] When set to the default of '1', the NFSv4 > > server will return only numeric uids and gids to > >@@ -3250,6 +3263,7 @@ > > and gids from such clients. This is intended to ease > > migration from NFSv2/v3. > >+ > > nmi_backtrace.backtrace_idle [KNL] > > Dump stacks even of idle CPUs in response to an > > NMI stack-backtrace request. > > > Interesting... I don't see these in the Linus tree I'm looking at [1] > find Documentation/ -type f | xargs grep -i inter_copy_offload_enable I was suggesting that as a patch. It's queued up for 5.16 now. --b.