diff --git a/block/bio.c b/block/bio.c
index bd8bf179981a..971d96afaf8d 100644
--- a/block/bio.c
+++ b/block/bio.c
@@ -617,7 +617,8 @@ struct bio *bio_kmalloc(unsigned short nr_vecs, gfp_t gfp_mask)
 
 	if (nr_vecs > BIO_MAX_INLINE_VECS)
 		return NULL;
-	return kmalloc(struct_size(bio, bi_inline_vecs, nr_vecs), gfp_mask);
+	return kmalloc(sizeof(*bio) + nr_vecs * sizeof(struct bio_vec),
+			gfp_mask);
 }
 EXPORT_SYMBOL(bio_kmalloc);
 
diff --git a/drivers/md/bcache/movinggc.c b/drivers/md/bcache/movinggc.c
index 4fc80c6d5b31..73918e55bf04 100644
--- a/drivers/md/bcache/movinggc.c
+++ b/drivers/md/bcache/movinggc.c
@@ -145,9 +145,9 @@ static void read_moving(struct cache_set *c)
 			continue;
 		}
 
-		io = kzalloc(struct_size(io, bio.bio.bi_inline_vecs,
-					 DIV_ROUND_UP(KEY_SIZE(&w->key), PAGE_SECTORS)),
-			     GFP_KERNEL);
+		io = kzalloc(sizeof(*io) + sizeof(struct bio_vec) *
+				DIV_ROUND_UP(KEY_SIZE(&w->key), PAGE_SECTORS),
+				GFP_KERNEL);
 		if (!io)
 			goto err;
 
diff --git a/drivers/md/bcache/writeback.c b/drivers/md/bcache/writeback.c
index 36dd8f14a6df..6ba73dc1a3df 100644
--- a/drivers/md/bcache/writeback.c
+++ b/drivers/md/bcache/writeback.c
@@ -536,9 +536,9 @@ static void read_dirty(struct cached_dev *dc)
 		for (i = 0; i < nk; i++) {
 			w = keys[i];
 
-			io = kzalloc(struct_size(io, bio.bi_inline_vecs,
-						DIV_ROUND_UP(KEY_SIZE(&w->key), PAGE_SECTORS)),
-				     GFP_KERNEL);
+			io = kzalloc(sizeof(*io) + sizeof(struct bio_vec) *
+				DIV_ROUND_UP(KEY_SIZE(&w->key), PAGE_SECTORS),
+				GFP_KERNEL);
 			if (!io)
 				goto err;
 
diff --git a/drivers/md/dm-vdo/vio.c b/drivers/md/dm-vdo/vio.c
index e7f4153e55e3..8fc22fb14196 100644
--- a/drivers/md/dm-vdo/vio.c
+++ b/drivers/md/dm-vdo/vio.c
@@ -212,7 +212,7 @@ int vio_reset_bio_with_size(struct vio *vio, char *data, int size, bio_end_io_t
 		return VDO_SUCCESS;
 
 	bio->bi_ioprio = 0;
-	bio->bi_io_vec = bio->bi_inline_vecs;
+	bio->bi_io_vec = bio_inline_vecs(bio);
 	bio->bi_max_vecs = vio->block_count + 1;
 	if (VDO_ASSERT(size <= vio_size, "specified size %d is not greater than allocated %d",
 		       size, vio_size) != VDO_SUCCESS)
diff --git a/fs/bcachefs/data_update.h b/fs/bcachefs/data_update.h
index 5e14d13568de..1b37780abfda 100644
--- a/fs/bcachefs/data_update.h
+++ b/fs/bcachefs/data_update.h
@@ -62,7 +62,6 @@ struct promote_op {
 
 	struct work_struct	work;
 	struct data_update	write;
-	struct bio_vec		bi_inline_vecs[]; /* must be last */
 };
 
 void bch2_data_update_to_text(struct printbuf *, struct data_update *);
diff --git a/fs/bcachefs/journal.c b/fs/bcachefs/journal.c
index 3dbf9faaaa4c..474e0e867b68 100644
--- a/fs/bcachefs/journal.c
+++ b/fs/bcachefs/journal.c
@@ -1627,8 +1627,8 @@ int bch2_dev_journal_init(struct bch_dev *ca, struct bch_sb *sb)
 	unsigned nr_bvecs = DIV_ROUND_UP(JOURNAL_ENTRY_SIZE_MAX, PAGE_SIZE);
 
 	for (unsigned i = 0; i < ARRAY_SIZE(ja->bio); i++) {
-		ja->bio[i] = kzalloc(struct_size(ja->bio[i], bio.bi_inline_vecs,
-				     nr_bvecs), GFP_KERNEL);
+		ja->bio[i] = kzalloc(sizeof(*ja->bio[i]) +
+				sizeof(struct bio_vec) * nr_bvecs, GFP_KERNEL);
 		if (!ja->bio[i])
 			return bch_err_throw(c, ENOMEM_dev_journal_init);
 
diff --git a/include/linux/bio.h b/include/linux/bio.h
index eb7f4fbd8aa9..27cbff5b0356 100644
--- a/include/linux/bio.h
+++ b/include/linux/bio.h
@@ -408,7 +408,7 @@ void bio_init(struct bio *bio, struct block_device *bdev, struct bio_vec *table,
 static inline void bio_init_inline(struct bio *bio, struct block_device *bdev,
 	      unsigned short max_vecs, blk_opf_t opf)
 {
-	bio_init(bio, bdev, bio->bi_inline_vecs, max_vecs, opf);
+	bio_init(bio, bdev, bio_inline_vecs(bio), max_vecs, opf);
 }
 extern void bio_uninit(struct bio *);
 void bio_reset(struct bio *bio, struct block_device *bdev, blk_opf_t opf);
diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h
index 930daff207df..bbb7893e0542 100644
--- a/include/linux/blk_types.h
+++ b/include/linux/blk_types.h
@@ -269,18 +269,16 @@ struct bio {
 	struct bio_vec		*bi_io_vec;	/* the actual vec list */
 
 	struct bio_set		*bi_pool;
-
-	/*
-	 * We can inline a number of vecs at the end of the bio, to avoid
-	 * double allocations for a small number of bio_vecs. This member
-	 * MUST obviously be kept at the very end of the bio.
-	 */
-	struct bio_vec		bi_inline_vecs[];
 };
 
 #define BIO_RESET_BYTES		offsetof(struct bio, bi_max_vecs)
 #define BIO_MAX_SECTORS		(UINT_MAX >> SECTOR_SHIFT)
 
+static inline struct bio_vec *bio_inline_vecs(struct bio *bio)
+{
+	return (struct bio_vec *)(bio + 1);
+}
+
 /*
  * bio flags
  */