[PATCH] nfs: don't drop dentry in d_revalidate

[Miklos Szeredi <miklos@szeredi.hu>]

NFS d_revalidate() is doing things that are supposed to be done by
d_invalidate().

Dropping the dentry is especially bad, since it will make
d_invalidate() bypass all checks.

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

Index: linux/fs/nfs/dir.c
===================================================================
--- linux.orig/fs/nfs/dir.c	2005-10-04 13:59:57.000000000 +0200
+++ linux/fs/nfs/dir.c	2005-10-07 12:53:45.000000000 +0200
@@ -762,12 +762,7 @@ out_zap_parent:
 	if (inode && S_ISDIR(inode->i_mode)) {
 		/* Purge readdir caches. */
 		nfs_zap_caches(inode);
-		/* If we have submounts, don't unhash ! */
-		if (have_submounts(dentry))
-			goto out_valid;
-		shrink_dcache_parent(dentry);
 	}
-	d_drop(dentry);
 	unlock_kernel();
 	dput(parent);
 	return 0;
-
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