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-rw-r--r--fs/fs-writeback.c10
1 files changed, 10 insertions, 0 deletions
diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
index 482de0a..9e72d04 100644
--- a/fs/fs-writeback.c
+++ b/fs/fs-writeback.c
@@ -651,6 +651,16 @@ static long wb_writeback(struct bdi_writeback *wb,
break;
/*
+ * Background writeout and kupdate-style writeback may
+ * run forever. Stop them if there is other work to do
+ * so that e.g. sync can proceed. They'll be restarted
+ * after the other works are all done.
+ */
+ if ((work->for_background || work->for_kupdate) &&
+ !list_empty(&wb->bdi->work_list))
+ break;
+
+ /*
* For background writeout, stop when we are below the
* background dirty threshold
*/
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