diff -rupN linux-3.2.0-original/fs/ext4/ext4.h linux-3.2.0/fs/ext4/ext4.h
--- linux-3.2.0-original/fs/ext4/ext4.h	2012-09-20 16:04:42.000000000 +0200
+++ linux-3.2.0/fs/ext4/ext4.h	2012-09-20 16:09:27.196325162 +0200
@@ -944,6 +944,7 @@ struct ext4_inode_info {
 
 #define EXT4_MOUNT2_EXPLICIT_DELALLOC	0x00000001 /* User explicitly
 						      specified delalloc */
+#define EXT4_MOUNT2_NOPOSIXRIGHTS			0x00000002 /* full world writeable */
 
 #define clear_opt(sb, opt)		EXT4_SB(sb)->s_mount_opt &= \
 						~EXT4_MOUNT_##opt
diff -rupN linux-3.2.0-original/fs/ext4/super.c linux-3.2.0/fs/ext4/super.c
--- linux-3.2.0-original/fs/ext4/super.c	2012-09-20 16:04:42.000000000 +0200
+++ linux-3.2.0/fs/ext4/super.c	2012-09-20 16:13:54.687998226 +0200
@@ -1335,6 +1335,7 @@ enum {
 	Opt_inode_readahead_blks, Opt_journal_ioprio,
 	Opt_dioread_nolock, Opt_dioread_lock,
 	Opt_discard, Opt_nodiscard, Opt_init_itable, Opt_noinit_itable,
+	Opt_posixrights, Opt_noposixrights,
 };
 
 static const match_table_t tokens = {
@@ -1394,6 +1395,8 @@ static const match_table_t tokens = {
 	{Opt_resize, "resize"},
 	{Opt_delalloc, "delalloc"},
 	{Opt_nodelalloc, "nodelalloc"},
+	{Opt_posixrights, "posixrights"},
+	{Opt_noposixrights, "noposixrights"},
 	{Opt_mblk_io_submit, "mblk_io_submit"},
 	{Opt_nomblk_io_submit, "nomblk_io_submit"},
 	{Opt_block_validity, "block_validity"},
@@ -1822,6 +1825,10 @@ set_qf_format:
 			clear_opt(sb, DELALLOC);
 			clear_opt2(sb, EXPLICIT_DELALLOC);
 			break;
+		case Opt_noposixrights:
+			set_opt2(sb, NOPOSIXRIGHTS);
+			sb->s_flags |= MS_NOPOSIXRIGHTS;
+			break;
 		case Opt_mblk_io_submit:
 			set_opt(sb, MBLK_IO_SUBMIT);
 			break;
@@ -1839,6 +1846,10 @@ set_qf_format:
 			set_opt(sb, DELALLOC);
 			set_opt2(sb, EXPLICIT_DELALLOC);
 			break;
+		case Opt_posixrights:
+			clear_opt2(sb, NOPOSIXRIGHTS);
+			sb->s_flags &= ~MS_NOPOSIXRIGHTS;
+			break;
 		case Opt_block_validity:
 			set_opt(sb, BLOCK_VALIDITY);
 			break;
@@ -3328,6 +3339,14 @@ static int ext4_fill_super(struct super_
 	    ((def_mount_opts & EXT4_DEFM_NODELALLOC) == 0))
 		set_opt(sb, DELALLOC);
 
+	/* 
+	 * use normal Posix rights by default
+	 * use -o noposixrights to turn it off
+	 * then all files will be RWX by everyone
+	 * usefull for shared media, like USB or SD Media
+	 */
+	clear_opt2(sb, NOPOSIXRIGHTS);
+
 	/*
 	 * set default s_li_wait_mult for lazyinit, for the case there is
 	 * no mount option specified.
diff -rupN linux-3.2.0-original/fs/namei.c linux-3.2.0/fs/namei.c
--- linux-3.2.0-original/fs/namei.c	2012-09-20 16:04:42.000000000 +0200
+++ linux-3.2.0/fs/namei.c	2012-09-20 16:14:45.858405590 +0200
@@ -272,6 +272,10 @@ int generic_permission(struct inode *ino
 {
 	int ret;
 
+	/*  printk(KERN_INFO "posixrights override"); */
+	if (inode->i_sb->s_flags & MS_NOPOSIXRIGHTS)
+		return 0;
+
 	/*
 	 * Do the basic permission checks.
 	 */
diff -rupN linux-3.2.0-original/include/linux/fs.h linux-3.2.0/include/linux/fs.h
--- linux-3.2.0-original/include/linux/fs.h	2012-09-20 16:04:42.000000000 +0200
+++ linux-3.2.0/include/linux/fs.h	2012-09-20 16:56:04.461396079 +0200
@@ -210,6 +210,9 @@ struct inodes_stat_t {
 #define MS_KERNMOUNT	(1<<22) /* this is a kern_mount call */
 #define MS_I_VERSION	(1<<23) /* Update inode I_version field */
 #define MS_STRICTATIME	(1<<24) /* Always perform atime updates */
+#define MS_NOPOSIXRIGHTS (1<<25) /* Don't force rights, 
+                                    everyone is allowed to do everything,
+                                    everyone is root here */
 #define MS_NOSEC	(1<<28)
 #define MS_BORN		(1<<29)
 #define MS_ACTIVE	(1<<30)