1 files changed, 4 insertions, 7 deletions

diff --git a/fs/bio.c b/fs/bio.c
index 24e4045788e2..e49cf7dd2e92 100644
--- a/fs/bio.c
+++ b/fs/bio.c
@@ -53,7 +53,7 @@ struct biovec_slab {
  */
 
 #define BV(x) { .nr_vecs = x, .name = "biovec-"__stringify(x) }
-static struct biovec_slab bvec_slabs[BIOVEC_NR_POOLS] = {
+static struct biovec_slab bvec_slabs[BIOVEC_NR_POOLS] __read_mostly = {
         BV(1), BV(4), BV(16), BV(64), BV(128), BV(BIO_MAX_PAGES),
 };
 #undef BV
@@ -249,19 +249,16 @@ inline void __bio_clone(struct bio *bio, struct bio *bio_src)
 {
         request_queue_t *q = bdev_get_queue(bio_src->bi_bdev);
 
-        memcpy(bio->bi_io_vec, bio_src->bi_io_vec, bio_src->bi_max_vecs * sizeof(struct bio_vec));
+        memcpy(bio->bi_io_vec, bio_src->bi_io_vec,
+                bio_src->bi_max_vecs * sizeof(struct bio_vec));
 
         bio->bi_sector = bio_src->bi_sector;
         bio->bi_bdev = bio_src->bi_bdev;
         bio->bi_flags |= 1 << BIO_CLONED;
         bio->bi_rw = bio_src->bi_rw;
-
-        /*
-         * notes -- maybe just leave bi_idx alone. assume identical mapping
-         * for the clone
-         */
         bio->bi_vcnt = bio_src->bi_vcnt;
         bio->bi_size = bio_src->bi_size;
+        bio->bi_idx = bio_src->bi_idx;
         bio_phys_segments(q, bio);
         bio_hw_segments(q, bio);
 }