Merge branch 'barrier' into for-linus

1 files changed, 7 insertions, 16 deletions

diff --git a/fs/bio.c b/fs/bio.c
index 5f604f269dfa..d59ddbf79626 100644
--- a/fs/bio.c
+++ b/fs/bio.c
@@ -109,11 +109,14 @@ static inline struct bio_vec *bvec_alloc_bs(gfp_t gfp_mask, int nr, unsigned lon
 
 void bio_free(struct bio *bio, struct bio_set *bio_set)
 {
-        const int pool_idx = BIO_POOL_IDX(bio);
+        if (bio->bi_io_vec) {
+                const int pool_idx = BIO_POOL_IDX(bio);
 
-        BIO_BUG_ON(pool_idx >= BIOVEC_NR_POOLS);
+                BIO_BUG_ON(pool_idx >= BIOVEC_NR_POOLS);
+
+                mempool_free(bio->bi_io_vec, bio_set->bvec_pools[pool_idx]);
+        }
 
-        mempool_free(bio->bi_io_vec, bio_set->bvec_pools[pool_idx]);
         mempool_free(bio, bio_set->bio_pool);
 }
 
@@ -127,21 +130,9 @@ static void bio_fs_destructor(struct bio *bio)
 
 void bio_init(struct bio *bio)
 {
-        bio->bi_next = NULL;
-        bio->bi_bdev = NULL;
+        memset(bio, 0, sizeof(*bio));
         bio->bi_flags = 1 << BIO_UPTODATE;
-        bio->bi_rw = 0;
-        bio->bi_vcnt = 0;
-        bio->bi_idx = 0;
-        bio->bi_phys_segments = 0;
-        bio->bi_hw_segments = 0;
-        bio->bi_hw_front_size = 0;
-        bio->bi_hw_back_size = 0;
-        bio->bi_size = 0;
-        bio->bi_max_vecs = 0;
-        bio->bi_end_io = NULL;
         atomic_set(&bio->bi_cnt, 1);
-        bio->bi_private = NULL;
 }
 
 /**