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-rw-r--r--mm/page-writeback.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index e630188ccc4..77a0bc4e261 100644
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -803,6 +803,15 @@ int test_set_page_writeback(struct page *page)
EXPORT_SYMBOL(test_set_page_writeback);
/*
+ * Wakes up tasks that are being throttled due to writeback congestion
+ */
+void writeback_congestion_end(void)
+{
+ blk_congestion_end(WRITE);
+}
+EXPORT_SYMBOL(writeback_congestion_end);
+
+/*
* Return true if any of the pages in the mapping are marged with the
* passed tag.
*/