fs/jfs/jfs_inode.c: atomically set inode->i_flags

commit 24e4a0f3 upstream.

According to commit 5f16f322

ext4: atomically set inode->i_flags in ext4_set_inode_flags()

Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com>
Cc: "Theodore Ts'o" <tytso@mit.edu>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>