nfs: make nfs_path() work without vfsmount
authorAl Viro <viro@zeniv.linux.org.uk>
Wed, 16 Mar 2011 10:26:11 +0000 (06:26 -0400)
committerAl Viro <viro@zeniv.linux.org.uk>
Wed, 16 Mar 2011 20:47:55 +0000 (16:47 -0400)
part 3: now we have everything to get nfs_path() just by dentry -
just follow to (disconnected) root and pick the rest of the thing
there.

Start killing propagation of struct vfsmount * on the paths that
used to bring it to nfs_path().

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

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