Revert "Revert "ext4: remove EXT4_STATE_DIOREAD_LOCK flag""

hulk inclusion
category: feature
bugzilla: 185871, https://gitee.com/openeuler/kernel/issues/I4MIQ0


CVE: NA

-----------------------------------------------

This reverts commit 5b2a4093.

Conflict:
	fs/ext4/ext4.h
	fs/ext4/extents.c
	fs/ext4/inode.c
	fs/ext4/ioctl.c
	fs/ext4/move_extent.c
	fs/ext4/super.c

Signed-off-by: Zhang Xiaoxu <zhangxiaoxu5@huawei.com>
Reviewed-by: Zhang Yi <yi.zhang@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>