diff --git a/block/blk-core.c b/block/blk-core.c
index 7e1523521c70..da697936d220 100644
--- a/block/blk-core.c
+++ b/block/blk-core.c
@@ -1276,7 +1276,6 @@ static bool attempt_plug_merge(struct request_queue *q, struct bio *bio,
 
 void init_request_from_bio(struct request *req, struct bio *bio)
 {
-	req->cpu = bio->bi_comp_cpu;
 	req->cmd_type = REQ_TYPE_FS;
 
 	req->cmd_flags |= bio->bi_rw & REQ_COMMON_MASK;
@@ -1362,8 +1361,7 @@ void blk_queue_bio(struct request_queue *q, struct bio *bio)
 	 */
 	init_request_from_bio(req, bio);
 
-	if (test_bit(QUEUE_FLAG_SAME_COMP, &q->queue_flags) ||
-	    bio_flagged(bio, BIO_CPU_AFFINE))
+	if (test_bit(QUEUE_FLAG_SAME_COMP, &q->queue_flags))
 		req->cpu = raw_smp_processor_id();
 
 	plug = current->plug;
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c
index d4ddfa627301..2948a520f7ba 100644
--- a/drivers/md/raid1.c
+++ b/drivers/md/raid1.c
@@ -2172,7 +2172,6 @@ static sector_t sync_request(mddev_t *mddev, sector_t sector_nr, int *skipped, i
 		bio->bi_next = NULL;
 		bio->bi_flags &= ~(BIO_POOL_MASK-1);
 		bio->bi_flags |= 1 << BIO_UPTODATE;
-		bio->bi_comp_cpu = -1;
 		bio->bi_rw = READ;
 		bio->bi_vcnt = 0;
 		bio->bi_idx = 0;
diff --git a/fs/bio.c b/fs/bio.c
index 9bfade8a609b..41c93c722244 100644
--- a/fs/bio.c
+++ b/fs/bio.c
@@ -255,7 +255,6 @@ void bio_init(struct bio *bio)
 {
 	memset(bio, 0, sizeof(*bio));
 	bio->bi_flags = 1 << BIO_UPTODATE;
-	bio->bi_comp_cpu = -1;
 	atomic_set(&bio->bi_cnt, 1);
 }
 EXPORT_SYMBOL(bio_init);
diff --git a/include/linux/bio.h b/include/linux/bio.h
index ce33e6868a2f..a3c071c9e189 100644
--- a/include/linux/bio.h
+++ b/include/linux/bio.h
@@ -268,14 +268,6 @@ extern struct bio_vec *bvec_alloc_bs(gfp_t, int, unsigned long *, struct bio_set
 extern void bvec_free_bs(struct bio_set *, struct bio_vec *, unsigned int);
 extern unsigned int bvec_nr_vecs(unsigned short idx);
 
-/*
- * Allow queuer to specify a completion CPU for this bio
- */
-static inline void bio_set_completion_cpu(struct bio *bio, unsigned int cpu)
-{
-	bio->bi_comp_cpu = cpu;
-}
-
 /*
  * bio_set is used to allow other portions of the IO system to
  * allocate their own private memory pools for bio and iovec structures.
diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h
index 71fc53bb8f1c..4053cbd4490e 100644
--- a/include/linux/blk_types.h
+++ b/include/linux/blk_types.h
@@ -59,8 +59,6 @@ struct bio {
 
 	unsigned int		bi_max_vecs;	/* max bvl_vecs we can hold */
 
-	unsigned int		bi_comp_cpu;	/* completion CPU */
-
 	atomic_t		bi_cnt;		/* pin count */
 
 	struct bio_vec		*bi_io_vec;	/* the actual vec list */
@@ -93,11 +91,10 @@ struct bio {
 #define BIO_BOUNCED	5	/* bio is a bounce bio */
 #define BIO_USER_MAPPED 6	/* contains user pages */
 #define BIO_EOPNOTSUPP	7	/* not supported */
-#define BIO_CPU_AFFINE	8	/* complete bio on same CPU as submitted */
-#define BIO_NULL_MAPPED 9	/* contains invalid user pages */
-#define BIO_FS_INTEGRITY 10	/* fs owns integrity data, not block layer */
-#define BIO_QUIET	11	/* Make BIO Quiet */
-#define BIO_MAPPED_INTEGRITY 12/* integrity metadata has been remapped */
+#define BIO_NULL_MAPPED 8	/* contains invalid user pages */
+#define BIO_FS_INTEGRITY 9	/* fs owns integrity data, not block layer */
+#define BIO_QUIET	10	/* Make BIO Quiet */
+#define BIO_MAPPED_INTEGRITY 11/* integrity metadata has been remapped */
 #define bio_flagged(bio, flag)	((bio)->bi_flags & (1 << (flag)))
 
 /*