LU-13349 llite: statahead should skip entry while fid changed

LU-13349 llite: statahead should skip entry while fid changed

The fid could change in the Statahead, so the entry should
be skipped in such case.

(lcommon_cl.c:147:cl_file_inode_init()) ASSERTION(
(((inode->i_mode) & 00170000) == 0100000) ) failed:
 kernel: LustreError:(lcommon_cl.c:147:cl_file_inode_init()) LBUG
 kernel: Pid: 106684, comm: ll_sa_94894 3.10.0-957.el7.x86_64 #1
 kernel: Call Trace:
 kernel: [<ffffffffc08587cc>] libcfs_call_trace+0x8c/0xc0 [libcfs]
 kernel: [<ffffffffc085887c>] lbug_with_loc+0x4c/0xa0 [libcfs]
 kernel: [<ffffffffc0e22ba6>] cl_file_inode_init+0x2f6/0x380 [lustre]
 kernel: [<ffffffffc0dfdce5>] ll_update_inode+0x2d5/0x5e0 [lustre]
 kernel: [<ffffffffc0e0afa3>] ll_iget+0x253/0x350 [lustre]
 kernel: [<ffffffffc0dffcf2>] ll_prep_inode+0x262/0x930 [lustre]
 kernel: [<ffffffffc0e1cc2c>] sa_handle_callback+0x37c/0x9d0 [lustre]
 kernel: [<ffffffffc0e1e156>] ll_statahead_thread+0x4d6/0x1c60 [lustre]
 kernel: [<ffffffffa64c1c31>] kthread+0xd1/0xe0
 kernel: [<ffffffffa6b74c1d>] ret_from_fork_nospec_begin+0x7/0x21

Signed-off-by: Yang Sheng <ys@whamcloud.com>
Change-Id: Ieee99cc935a111cf05f65b64512b546d2e9b3c74
Reviewed-on: https://review.whamcloud.com/37868
Tested-by: jenkins <devops@whamcloud.com>
Tested-by: Maloo <maloo@whamcloud.com>
Reviewed-by: Alexander Boyko <alexander.boyko@hpe.com>
Reviewed-by: Lai Siyao <lai.siyao@whamcloud.com>
Reviewed-by: Oleg Drokin <green@whamcloud.com>