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-rw-r--r--block/bio.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/block/bio.c b/block/bio.c
index 8281bfcbc265..4db1008309ed 100644
--- a/block/bio.c
+++ b/block/bio.c
@@ -2097,8 +2097,12 @@ EXPORT_SYMBOL_GPL(bio_associate_blkg);
*/
void bio_clone_blkg_association(struct bio *dst, struct bio *src)
{
+ rcu_read_lock();
+
if (src->bi_blkg)
__bio_associate_blkg(dst, src->bi_blkg);
+
+ rcu_read_unlock();
}
EXPORT_SYMBOL_GPL(bio_clone_blkg_association);
#endif /* CONFIG_BLK_CGROUP */