[PATCH 4.14 076/183] block: Set BIO_TRACE_COMPLETION on new bio during split

From: Greg Kroah-Hartman
Date: Wed Apr 25 2018 - 07:19:31 EST

4.14-stable review patch. If anyone has any objections, please let me know.


From: Goldwyn Rodrigues <rgoldwyn@xxxxxxxx>

[ Upstream commit 20d59023c5ec4426284af492808bcea1f39787ef ]

We inadvertently set it again on the source bio, but we need
to set it on the new split bio instead.

Fixes: fbbaf700e7b1 ("block: trace completion of all bios.")
Signed-off-by: Goldwyn Rodrigues <rgoldwyn@xxxxxxxx>
Signed-off-by: Jens Axboe <axboe@xxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
block/bio.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/block/bio.c
+++ b/block/bio.c
@@ -1893,7 +1893,7 @@ struct bio *bio_split(struct bio *bio, i
bio_advance(bio, split->bi_iter.bi_size);

if (bio_flagged(bio, BIO_TRACE_COMPLETION))
- bio_set_flag(bio, BIO_TRACE_COMPLETION);
+ bio_set_flag(split, BIO_TRACE_COMPLETION);

return split;