bcache: Hack around stuff that clones up to bi_max_vecs
Signed-off-by: Kent Overstreet <koverstreet@google.com>
diff --git a/drivers/md/bcache/io.c b/drivers/md/bcache/io.c
index f565512..b4c0e28 100644
--- a/drivers/md/bcache/io.c
+++ b/drivers/md/bcache/io.c
@@ -38,6 +38,15 @@
bio = clone;
}
+ /*
+ * Hack, since drivers that clone bios clone up to bi_max_vecs, but our
+ * bios might have had more than that (before we split them per device
+ * limitations).
+ *
+ * To be taken out once immutable bvec stuff is in.
+ */
+ bio->bi_max_vecs = bio->bi_vcnt;
+
generic_make_request(bio);
}