LU-9146 ldiskfs: backport a few patches to resolve deadlock

LU-9146 ldiskfs: backport a few patches to resolve deadlock

The ext4_mark_inode_dirty() may trigger new block
alloction. ext4_xattr_block_set() will be invoked
and trying to grab i_data_sem. It may cause deadlock
in some time. We backport 3 patches to resolve this
issue.

Backport from upstream:
	2e81a4eeedcaa66e35f58b81e0755b87057ce392
	e3cf5d5d9a86df1c5e413bdd3725c25a16ff854c
	a521100231f816f8cdd9c8e77da14ff1e42c2b17

Signed-off-by: Yang Sheng <yang.sheng@intel.com>
Change-Id: I2e1bc10bc0e03ad760d113a785d43c06f85fcfa3
Reviewed-on: https://review.whamcloud.com/25595
Tested-by: Jenkins
Reviewed-by: Wang Shilong <wshilong@ddn.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>