bcachefs: fix ref leak in btree_node_read_all_replicas

Kent Overstreet · Kent Overstreet · commit f1350c2c74e6 · 2025-04-01T02:47:41.000-04:00
Signed-off-by: Kent Overstreet &lt;kent.overstreet@linux.dev&gt;
diff --git a/fs/bcachefs/btree_io.c b/fs/bcachefs/btree_io.c
@@ -1609,6 +1609,7 @@ static void btree_node_read_all_replicas_endio(struct bio *bio)
 		struct bch_dev *ca = bch2_dev_have_ref(c, rb->pick.ptr.dev);
 
 		bch2_latency_acct(ca, rb->start_time, READ);
+		percpu_ref_put(&ca->io_ref);
 	}
 
 	ra->err[rb->idx] = bio->bi_status;

Original file line number	Diff line number	Diff line change
`@@ -1609,6 +1609,7 @@ static void btree_node_read_all_replicas_endio(struct bio *bio)`
`1609`	`1609`	`struct bch_dev *ca = bch2_dev_have_ref(c, rb->pick.ptr.dev);`
`1610`	`1610`
`1611`	`1611`	`bch2_latency_acct(ca, rb->start_time, READ);`
	`1612`	`+ percpu_ref_put(&ca->io_ref);`
`1612`	`1613`	`}`
`1613`	`1614`
`1614`	`1615`	`ra->err[rb->idx] = bio->bi_status;`