[PATCH] dcookies.c: use proper refcounting functions

[Miklos Szeredi <miklos@szeredi.hu>]

Dcookies shouldn't play with the internals of dentry and vfsmnt
refcounting.  It defeats grepping, and is prone to break if
implementation details change.

In addition the function doesn't even seem to be performance critical:
it calls kmem_cache_alloc().

Signed-off-by: Miklos Szeredi <miklos@szeredi.hu>

Index: linux/fs/dcookies.c
===================================================================
--- linux.orig/fs/dcookies.c	2004-12-24 22:33:48.000000000 +0100
+++ linux/fs/dcookies.c	2005-05-25 17:14:08.000000000 +0200
@@ -94,12 +94,10 @@ static struct dcookie_struct * alloc_dco
 	if (!dcs)
 		return NULL;
 
-	atomic_inc(&dentry->d_count);
-	atomic_inc(&vfsmnt->mnt_count);
 	dentry->d_cookie = dcs;
 
-	dcs->dentry = dentry;
-	dcs->vfsmnt = vfsmnt;
+	dcs->dentry = dget(dentry);
+	dcs->vfsmnt = mntget(vfsmnt);
 	hash_dcookie(dcs);
 
 	return dcs;
-
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