blkcg: implement bio_associate_blkcg()

[mirror_ubuntu-zesty-kernel.git] / include / linux / bio.h

diff --git a/include/linux/bio.h b/include/linux/bio.h
index f0291cf64cc5f6d26a2e60ee5e1cfc02431556d5..5e963a6d7c1427e90a8c2d10f357271b8f6ef33b 100644 (file)
--- a/include/linux/bio.h
+++ b/include/linux/bio.h
@@ -482,9 +482,12 @@ extern void bvec_free(mempool_t *, struct bio_vec *, unsigned int);
 extern unsigned int bvec_nr_vecs(unsigned short idx);
 
 #ifdef CONFIG_BLK_CGROUP
+int bio_associate_blkcg(struct bio *bio, struct cgroup_subsys_state *blkcg_css);
 int bio_associate_current(struct bio *bio);
 void bio_disassociate_task(struct bio *bio);
 #else  /* CONFIG_BLK_CGROUP */
+static inline int bio_associate_blkcg(struct bio *bio,
+                       struct cgroup_subsys_state *blkcg_css) { return 0; }
 static inline int bio_associate_current(struct bio *bio) { return -ENOENT; }
 static inline void bio_disassociate_task(struct bio *bio) { }
 #endif /* CONFIG_BLK_CGROUP */