UBUNTU: SAUCE: ext4: fix ext4_validate_inode_bitmap: comm stress-ng: Corrupt inode...

UBUNTU: SAUCE: ext4: fix ext4_validate_inode_bitmap: comm stress-ng: Corrupt inode bitmap

BugLink: http://bugs.launchpad.net/bugs/1780137
Fix regression triggered by the stress-ng[*] "chdir" test, with LKML test
patch.

Regression observed on some arm64 server platforms:

    EXT4-fs error (device sda1): ext4_validate_inode_bitmap:99: comm stress-ng: Corrupt inode bitmap

Reference: https://lkml.org/lkml/2018/7/7/2

Reported-by: dann frazier <dann.frazier@canonical.com>
Tested-by: dann frazier <dann.frazier@canonical.com>
Fixes: 044e6e3d74a3 ext4: don't update checksum of new initialized bitmaps
Signed-off-by: Kamal Mostafa <kamal@canonical.com>
Acked-by: Khalid Elmously <khalid.elmously@canonical.com>
Acked-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Khalid Elmously <khalid.elmously@canonical.com>