According to commit 5f16f322

ext4: atomically set inode->i_flags in ext4_set_inode_flags()
Signed-off-by: NFabian Frederick <fabf@skynet.be>
Signed-off-by: NDave Kleikamp <dave.kleikamp@oracle.com>
Cc: "Theodore Ts'o" <tytso@mit.edu>