[fs/9p] Initialze cached acls both in cached/uncached mode.

With create/mkdir/mknod in non cached mode we initialize the inode using
v9fs_get_inode. v9fs_get_inode doesn't initialize the cache inode value
to NULL.  This is causing to trip on BUG_ON in v9fs_get_cached_acl.
Fix is to initialize acls to NULL and not to leave them in ACL_NOT_CACHED
state.

Signed-off-by: Venkateswararao Jujjuri <jvrao@linux.vnet.ibm.com>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>

fs/9p/acl.c

@@ -132,6 +132,10 @@ static int v9fs_set_acl(struct dentry *dentry, int type, struct posix_acl *acl)
 	struct inode *inode = dentry->d_inode;
 
 	set_cached_acl(inode, type, acl);
+
+	if (!acl)
+		return 0;
+
 	/* Set a setxattr request to server */
 	size = posix_acl_xattr_size(acl->a_count);
 	buffer = kmalloc(size, GFP_KERNEL);
@@ -181,10 +185,8 @@ int v9fs_acl_chmod(struct dentry *dentry)
 int v9fs_set_create_acl(struct dentry *dentry,
 			struct posix_acl *dpacl, struct posix_acl *pacl)
 {
-	if (dpacl)
-		v9fs_set_acl(dentry, ACL_TYPE_DEFAULT, dpacl);
-	if (pacl)
-		v9fs_set_acl(dentry, ACL_TYPE_ACCESS, pacl);
+	v9fs_set_acl(dentry, ACL_TYPE_DEFAULT, dpacl);
+	v9fs_set_acl(dentry, ACL_TYPE_ACCESS, pacl);
 	posix_acl_release(dpacl);
 	posix_acl_release(pacl);
 	return 0;