Comment 4 for bug 428692

I realize that the above isn't a very good sentence. What I meant to say, was that the current kernel (with alpha6 -- linux-image-2.6.31-300-ec2) has :
# CONFIG_EXT4_FS is not set

We want to have ext4 support in ec2 kernels 2.6.31-10-generic has:
CONFIG_EXT4_FS=y
# CONFIG_EXT4DEV_COMPAT is not set
CONFIG_EXT4_FS_XATTR=y
CONFIG_EXT4_FS_POSIX_ACL=y
CONFIG_EXT4_FS_SECURITY=y