fs: make posix_acl_create more useful

Rename the current posix_acl_created to __posix_acl_create and add
a fully featured helper to set up the ACLs on file creation that
uses get_acl().

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

fs/jffs2/acl.c

@@ -295,7 +295,7 @@ int jffs2_init_acl_pre(struct inode *dir_i, struct inode *inode, umode_t *i_mode
 		if (S_ISDIR(*i_mode))
 			set_cached_acl(inode, ACL_TYPE_DEFAULT, acl);
 
-		rc = posix_acl_create(&acl, GFP_KERNEL, i_mode);
+		rc = __posix_acl_create(&acl, GFP_KERNEL, i_mode);
 		if (rc < 0)
 			return rc;
 		if (rc > 0)