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-rw-r--r--drivers/md/dm-table.c3
-rw-r--r--include/linux/device-mapper.h6
2 files changed, 9 insertions, 0 deletions
diff --git a/drivers/md/dm-table.c b/drivers/md/dm-table.c
index 2e227fbf1622..f90069029aae 100644
--- a/drivers/md/dm-table.c
+++ b/drivers/md/dm-table.c
@@ -1319,6 +1319,9 @@ static bool dm_table_supports_flush(struct dm_table *t, unsigned flush)
if (!ti->num_flush_requests)
continue;
+ if (ti->flush_supported)
+ return 1;
+
if (ti->type->iterate_devices &&
ti->type->iterate_devices(ti, device_flush_capable, &flush))
return 1;
diff --git a/include/linux/device-mapper.h b/include/linux/device-mapper.h
index 8bdbbfce759a..bdd65e97a129 100644
--- a/include/linux/device-mapper.h
+++ b/include/linux/device-mapper.h
@@ -212,6 +212,12 @@ struct dm_target {
char *error;
/*
+ * Set if this target needs to receive flushes regardless of
+ * whether or not its underlying devices have support.
+ */
+ bool flush_supported:1;
+
+ /*
* Set if this target needs to receive discards regardless of
* whether or not its underlying devices have support.
*/