Hello Greg,
Can you please consider including the following patches in the stable
linux-4.14.y branch?
An NFS server accepts only a limited number of concurrent v4.1+ mounts. Once
that limit is reached, on the affected client side, mount.nfs appears to hang to
keep reissuing CREATE_SESSION calls until one of them succeeds. This is to bump
the limit, also return smaller ca_maxrequests as the limit approaches instead of
waiting till we have to fail CREATE_SESSION completely.
44d8660d3bb0("nfsd: increase DRC cache limit")
de766e570413("nfsd: give out fewer session slots as limit approaches")
c54f24e338ed("nfsd: fix performance-limiting session calculation")
Thanks,
Qian Lu
