[PATCH] knfsd: replace some warning ins nfsfh.h with BUG_ON or WARN_ON

A couple of the warnings will be followed by an Oops if they ever fire, so may
as well be BUG_ON.  Another isn't obviously fatal but has never been known to
fire, so make it a WARN_ON.

Cc: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

include/linux/nfsd/nfsfh.h

@@ -217,11 +217,7 @@ void	fh_put(struct svc_fh *);
 static __inline__ struct svc_fh *
 fh_copy(struct svc_fh *dst, struct svc_fh *src)
 {
-	if (src->fh_dentry || src->fh_locked) {
-		struct dentry *dentry = src->fh_dentry;
-		printk(KERN_ERR "fh_copy: copying %s/%s, already verified!\n",
-			dentry->d_parent->d_name.name, dentry->d_name.name);
-	}
+	WARN_ON(src->fh_dentry || src->fh_locked);
 
 	*dst = *src;
 	return dst;
@@ -300,10 +296,8 @@ fh_lock_nested(struct svc_fh *fhp, unsigned int subclass)
 	dfprintk(FILEOP, "nfsd: fh_lock(%s) locked = %d\n",
 			SVCFH_fmt(fhp), fhp->fh_locked);
 
-	if (!fhp->fh_dentry) {
-		printk(KERN_ERR "fh_lock: fh not verified!\n");
-		return;
-	}
+	BUG_ON(!dentry);
+
 	if (fhp->fh_locked) {
 		printk(KERN_WARNING "fh_lock: %s/%s already locked!\n",
 			dentry->d_parent->d_name.name, dentry->d_name.name);
@@ -328,8 +322,7 @@ fh_lock(struct svc_fh *fhp)
 static inline void
 fh_unlock(struct svc_fh *fhp)
 {
-	if (!fhp->fh_dentry)
-		printk(KERN_ERR "fh_unlock: fh not verified!\n");
+	BUG_ON(!fhp->fh_dentry);
 
 	if (fhp->fh_locked) {
 		fill_post_wcc(fhp);