29c9951
author Al Viro <viro@zeniv.linux.org.uk> 1240036351 -0400
committer Al Viro <viro@zeniv.linux.org.uk> 1240282875 -0400

Safer nfsd_cross_mnt()

AFAICS, we have a subtle bug there: if we have crossed mountpoint
*and* it got mount --move'd away, we'll be holding only one
reference to fs containing dentry - exp->ex_path.mnt.  IOW, we
ought to dput() before exp_put().

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