NFSv4: Fix nfs_atomic_open() to set the verifier on negative dentries too

Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>

fs/nfs/dir.c

@@ -656,11 +656,6 @@ static int nfs_check_verifier(struct inode *dir, struct dentry *dentry)
 	return 1;
 }
 
-static inline void nfs_set_verifier(struct dentry * dentry, unsigned long verf)
-{
-	dentry->d_time = verf;
-}
-
 /*
  * Return the intent data that applies to this particular path component
  *
@@ -1016,7 +1011,6 @@ static struct dentry *nfs_atomic_lookup(struct inode *dir, struct dentry *dentry
 		}
 	} else if (res != NULL)
 		dentry = res;
-	nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
 out:
 	return res;
 no_open:
@@ -1060,8 +1054,6 @@ static int nfs_open_revalidate(struct dentry *dentry, struct nameidata *nd)
 	 */
 	lock_kernel();
 	ret = nfs4_open_revalidate(dir, dentry, openflags, nd);
-	if (ret == 1)
-		nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
 	unlock_kernel();
 out:
 	dput(parent);

fs/nfs/nfs4proc.c

@@ -1399,13 +1399,16 @@ nfs4_atomic_open(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
 	state = nfs4_do_open(dir, &path, nd->intent.open.flags, &attr, cred);
 	put_rpccred(cred);
 	if (IS_ERR(state)) {
-		if (PTR_ERR(state) == -ENOENT)
+		if (PTR_ERR(state) == -ENOENT) {
 			d_add(dentry, NULL);
+			nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
+		}
 		return (struct dentry *)state;
 	}
 	res = d_add_unique(dentry, igrab(state->inode));
 	if (res != NULL)
 		path.dentry = res;
+	nfs_set_verifier(path.dentry, nfs_save_change_attribute(dir));
 	nfs4_intent_set_file(nd, &path, state);
 	return res;
 }
@@ -1439,6 +1442,7 @@ nfs4_open_revalidate(struct inode *dir, struct dentry *dentry, int openflags, st
 		}
 	}
 	if (state->inode == dentry->d_inode) {
+		nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
 		nfs4_intent_set_file(nd, &path, state);
 		return 1;
 	}
@@ -1885,6 +1889,7 @@ nfs4_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
 		goto out;
 	}
 	d_add(dentry, igrab(state->inode));
+	nfs_set_verifier(dentry, nfs_save_change_attribute(dir));
 	if (flags & O_EXCL) {
 		struct nfs_fattr fattr;
 		status = nfs4_do_setattr(state->inode, &fattr, sattr, state);

include/linux/nfs_fs.h

@@ -240,6 +240,11 @@ static inline int NFS_USE_READDIRPLUS(struct inode *inode)
 	return test_bit(NFS_INO_ADVISE_RDPLUS, &NFS_FLAGS(inode));
 }
 
+static inline void nfs_set_verifier(struct dentry * dentry, unsigned long verf)
+{
+	dentry->d_time = verf;
+}
+
 /**
  * nfs_save_change_attribute - Returns the inode attribute change cookie
  * @dir - pointer to parent directory inode