2 files changed, 11 insertions, 12 deletions

diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c
index efdba2e802d7..3e64b98f3a93 100644
--- a/fs/nfs/dir.c
+++ b/fs/nfs/dir.c
@@ -707,9 +707,7 @@ static int nfs_is_exclusive_create(struct inode *dir, struct nameidata *nd)
 {
         if (NFS_PROTO(dir)->version == 2)
                 return 0;
-        if (nd == NULL || nfs_lookup_check_intent(nd, LOOKUP_CREATE) == 0)
-                return 0;
-        return (nd->intent.open.flags & O_EXCL) != 0;
+        return nd && nfs_lookup_check_intent(nd, LOOKUP_EXCL);
 }
 
 /*
@@ -1009,7 +1007,7 @@ static struct dentry *nfs_atomic_lookup(struct inode *dir, struct dentry *dentry
 
         /* Let vfs_create() deal with O_EXCL. Instantiate, but don't hash
          * the dentry. */
-        if (nd->intent.open.flags & O_EXCL) {
+        if (nd->flags & LOOKUP_EXCL) {
                 d_instantiate(dentry, NULL);
                 goto out;
         }
@@ -1959,6 +1957,9 @@ force_lookup:
         } else
                 res = PTR_ERR(cred);
 out:
+        if (!res && (mask & MAY_EXEC) && !execute_ok(inode))
+                res = -EACCES;
+
         dfprintk(VFS, "NFS: permission(%s/%ld), mask=0x%x, res=%d\n",
                 inode->i_sb->s_id, inode->i_ino, mask, res);
         return res;
diff --git a/fs/nfs/getroot.c b/fs/nfs/getroot.c
index fae97196daad..b7c9b2df1f29 100644
--- a/fs/nfs/getroot.c
+++ b/fs/nfs/getroot.c
@@ -107,11 +107,10 @@ struct dentry *nfs_get_root(struct super_block *sb, struct nfs_fh *mntfh)
          * if the dentry tree reaches them; however if the dentry already
          * exists, we'll pick it up at this point and use it as the root
          */
-        mntroot = d_alloc_anon(inode);
-        if (!mntroot) {
-                iput(inode);
+        mntroot = d_obtain_alias(inode);
+        if (IS_ERR(mntroot)) {
                 dprintk("nfs_get_root: get root dentry failed\n");
-                return ERR_PTR(-ENOMEM);
+                return mntroot;
         }
 
         security_d_instantiate(mntroot, inode);
@@ -277,11 +276,10 @@ struct dentry *nfs4_get_root(struct super_block *sb, struct nfs_fh *mntfh)
          * if the dentry tree reaches them; however if the dentry already
          * exists, we'll pick it up at this point and use it as the root
          */
-        mntroot = d_alloc_anon(inode);
-        if (!mntroot) {
-                iput(inode);
+        mntroot = d_obtain_alias(inode);
+        if (IS_ERR(mntroot)) {
                 dprintk("nfs_get_root: get root dentry failed\n");
-                return ERR_PTR(-ENOMEM);
+                return mntroot;
         }
 
         security_d_instantiate(mntroot, inode);