rq-qos: introduce dio_bio callback
wbt cares only about request completion time, but controllers may need
information that is on the bio itself, so add a done_bio callback for
rq-qos so things like blk-iolatency can use it to have the bio when it
completes.
Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
diff --git a/block/bio.c b/block/bio.c
index 5f84f5c..f3536bf 100644
--- a/block/bio.c
+++ b/block/bio.c
@@ -32,6 +32,7 @@
#include <trace/events/block.h>
#include "blk.h"
+#include "blk-rq-qos.h"
/*
* Test patch to inline a certain number of bi_io_vec's inside the bio
@@ -1808,6 +1809,9 @@ void bio_endio(struct bio *bio)
if (!bio_integrity_endio(bio))
return;
+ if (bio->bi_disk)
+ rq_qos_done_bio(bio->bi_disk->queue, bio);
+
/*
* Need to have a real endio function for chained bios, otherwise
* various corner cases will break (like stacking block devices that