staging/lustre/llite: clear inode timestamps after losing UPDATE lock

Otherwise, those leftovers would interfere with new timestamps
especially when the timestamps are set back in time on the other
clients.
Signed-off-by: Jinshan Xiong <jinshan.xiong@intel.com>
Signed-off-by: Niu Yawei <yawei.niu@intel.com>
Reviewed-on: http://review.whamcloud.com/22623
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-8446Reviewed-by: Bobi Jam <bobijam@hotmail.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Reviewed-by: James Simmons <jsimmons@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/lustre/lustre/llite/namei.c

@@ -251,6 +251,16 @@ int ll_md_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
 				       PFID(ll_inode2fid(inode)), rc);
 		}
 
+		if (bits & MDS_INODELOCK_UPDATE) {
+			struct ll_inode_info *lli = ll_i2info(inode);
+
+			spin_lock(&lli->lli_lock);
+			LTIME_S(inode->i_mtime) = 0;
+			LTIME_S(inode->i_atime) = 0;
+			LTIME_S(inode->i_ctime) = 0;
+			spin_unlock(&lli->lli_lock);
+		}
+
 		if ((bits & MDS_INODELOCK_UPDATE) && S_ISDIR(inode->i_mode)) {
 			struct ll_inode_info *lli = ll_i2info(inode);