NAK: [SRU X/T] Fix CVE-2017-7495

[Shrirang Bagul]

On Tue, 2017-08-01 at 17:22 +0800, Shrirang Bagul wrote:
> Only Xenial and Trusty kernels need this fix. Backport for two reasons:
> - ext4 doesn't support allocation of pre-zeroed blocks (introduced in
>   4.5-rc1). I had to fix up one hunk (which removed the check for
>   EXT4_GET_BLOCKS_ZERO flag) before adding inodes on the transaction's
>   ordered data list.
> - Minor context changes
> 
> -Shrirang
> 

Will resend with CVE number in individual patches.