Merge branch 'for-linus' of git://git.kernel.dk/data/git/linux-2.6-block

* 'for-linus' of git://git.kernel.dk/data/git/linux-2.6-block: (63 commits)
  Fix memory leak in dm-crypt
  SPARC64: sg chaining support
  SPARC: sg chaining support
  PPC: sg chaining support
  PS3: sg chaining support
  IA64: sg chaining support
  x86-64: enable sg chaining
  x86-64: update pci-gart iommu to sg helpers
  x86-64: update nommu to sg helpers
  x86-64: update calgary iommu to sg helpers
  swiotlb: sg chaining support
  i386: enable sg chaining
  i386 dma_map_sg: convert to using sg helpers
  mmc: need to zero sglist on init
  Panic in blk_rq_map_sg() from CCISS driver
  remove sglist_len
  remove blk_queue_max_phys_segments in libata
  revert sg segment size ifdefs
  Fixup u14-34f ENABLE_SG_CHAINING
  qla1280: enable use_sg_chaining option
  ...

2 files changed, 8 insertions, 17 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;
 }
 
 /**
diff --git a/fs/splice.c b/fs/splice.c
index a7568bcc0f99..59a941d404d9 100644
--- a/fs/splice.c
+++ b/fs/splice.c
@@ -1335,10 +1335,10 @@ static int pipe_to_user(struct pipe_inode_info *pipe, struct pipe_buffer *buf,
         if (copy_to_user(sd->u.userptr, src + buf->offset, sd->len))
                 ret = -EFAULT;
 
+        buf->ops->unmap(pipe, buf, src);
 out:
         if (ret > 0)
                 sd->u.userptr += ret;
-        buf->ops->unmap(pipe, buf, src);
         return ret;
 }