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[1/1] : Thaws refrigerated bdi flusher threads before invoking kthread_stop on them

Message ID 1257928216.15415.57.camel@boson (mailing list archive)
State Awaiting Upstream, archived
Headers show

Commit Message

Dasgupta, Romit Nov. 11, 2009, 8:30 a.m. UTC
None
diff mbox

Patch

diff --git a/mm/backing-dev.c b/mm/backing-dev.c
index 5a37e20..c757b05 100644
--- a/mm/backing-dev.c
+++ b/mm/backing-dev.c
@@ -606,8 +606,11 @@  static void bdi_wb_shutdown(struct backing_dev_info *bdi)
 	 * Finally, kill the kernel threads. We don't need to be RCU
 	 * safe anymore, since the bdi is gone from visibility.
 	 */
-	list_for_each_entry(wb, &bdi->wb_list, list)
+	list_for_each_entry(wb, &bdi->wb_list, list) {
+		if (unlikely(frozen(wb->task)))
+			wb->task->flags &= ~PF_FROZEN;
 		kthread_stop(wb->task);
+	}
 }
 
 void bdi_unregister(struct backing_dev_info *bdi)