From: Greg Banks <gnb@melbourne.sgi.com>
Subject: Re: [PATCH] 1/3 - RPC metrics support
Date: Sun, 04 Apr 2004 16:17:19 +1000
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To: "Lever, Charles" <Charles.Lever@netapp.com>
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"Lever, Charles" wrote:
> 
> > Why not just save a copy of @devname in nfs_get_sb() ?  It's
> > the same name that's stored in struct vfsmount and reported
> > in /proc/mounts.
> 
> unless i've missed something, there are only two NFS functions
> that take vfsmount as an argument.  one is nfs_show_options, and
> the other is nfs_getattr.
> 
> the vfsmount struct is not available to the NFS client during a
> mount operation.

The devname string that fs/super.c:do_kern_mount() passes to
nfs_get_sb() via file_system_type->get_sb is passed to
alloc_vfsmount() and used there to initialise the vfsmount's
mnt_devname.  So while NFS doesn't have the vfsmount it does
have the same devname string.

Greg.
-- 
Greg Banks, R&D Software Engineer, SGI Australian Software Group.
I don't speak for SGI.


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