~hc/RK356X_SDK_RELEASE.git

..	..	@@ -700,7 +700,7 @@
700	700	* is okay. The main goal is avoiding keeping an inode on
701	701	* the wrong wb for an extended period of time.
702	702	*/
703		- if (hweight32(history) > WB_FRN_HIST_THR_SLOTS)
	703	+ if (hweight16(history) > WB_FRN_HIST_THR_SLOTS)
704	704	inode_switch_wbs(inode, max_id);
705	705	}
706	706
..	..	@@ -884,6 +884,16 @@
884	884	continue;
885	885	}
886	886
	887	+ /*
	888	+ * If wb_tryget fails, the wb has been shutdown, skip it.
	889	+ *
	890	+ * Pin @wb so that it stays on @bdi->wb_list. This allows
	891	+ * continuing iteration from @wb after dropping and
	892	+ * regrabbing rcu read lock.
	893	+ */
	894	+ if (!wb_tryget(wb))
	895	+ continue;
	896	+
887	897	/* alloc failed, execute synchronously using on-stack fallback */
888	898	work = &fallback_work;
889	899	work = base_work;
..	..	@@ -892,13 +902,6 @@
892	902	work->done = &fallback_work_done;
893	903
894	904	wb_queue_work(wb, work);
895		-
896		- /*
897		- * Pin @wb so that it stays on @bdi->wb_list. This allows
898		- * continuing iteration from @wb after dropping and
899		- * regrabbing rcu read lock.
900		- */
901		- wb_get(wb);
902	905	last_wb = wb;
903	906
904	907	rcu_read_unlock();