From: Chang Huaixin <huaixin.chx@xxxxxxxxxxxxxxx>
Blkg_conf_finish is used after blkg_conf_prep.
Blkg_conf_prep calls get_disk and increases module refcount. However,
blkg_conf_finish only calls put_disk which doesn't decrease module refcount.
So we call module_put here additionally to keep module refcount balanced.
Signed-off-by: Chang Huaixin <huaixin.chx@xxxxxxxxxxxxxxx>
---
block/blk-cgroup.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c
index 5a37188..15cbf36 100644
--- a/block/blk-cgroup.c
+++ b/block/blk-cgroup.c
@@ -853,6 +853,7 @@ void blkg_conf_finish(struct blkg_conf_ctx *ctx)
{
spin_unlock_irq(ctx->disk->queue->queue_lock);
rcu_read_unlock();
+ module_put(ctx->disk->fops->owner);
put_disk(ctx->disk);
}
EXPORT_SYMBOL_GPL(blkg_conf_finish);
--
1.9.4
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