nfsd4_proc_compound is using over a thousand bytes of stack.

This is partly because it declares two local svc_fh's, partly because of a big
switch statement which calls a bunch of functions which may be inlined.

Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>        
Signed-off-by: Neil Brown <neilb@cse.unsw.edu.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>