CVE request - kernel: ext4: Make sure the MOVE_EXT ioctl can't overwrite append-only files

[Eugene Teo <eugene () redhat com>]

Using the EXT4_IOC_MOVE_EXT ioctl, it is possible to overwrite the 
contents of an append-only donor file.

http://git.kernel.org/linus/1f5a81e41f8b1a782c68d3843e9ec1bfaadf7d72
https://bugzilla.redhat.com/show_bug.cgi?id=601006

Thanks, Eugene
--
main(i) { putchar(182623909 >> (i-1) * 5&31|!!(i<7)<<6) && main(++i); }