On Sun, Jul 28, 2019 at 11:04:25AM -0400, Sasha Levin wrote:
> On Fri, Jul 26, 2019 at 02:36:35PM -0700, Qian Lu wrote:
> > 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")
>
> I've queued these 3 for 4.14 and older.
>
> Note that c54f24e338ed has a fix: 3b2d4dcf71c4a ("nfsd: Fix overflow
> causing non-working mounts on 1 TB machines") which was queued as well.
Thanks for catching that. These sound like reasonable stable backports.
--b.
