Merge branch 'for-linus' of master.kernel.org:/pub/scm/linux/kernel/git/roland/infiniband

[linux-drm-fsl-dcu.git] / fs / bio.c

diff --git a/fs/bio.c b/fs/bio.c
index 8f93e939f21375abe2c205fd2783c319098cc87f..7618bcb1836848737921c48302359a29a583e23b 100644 (file)
--- a/fs/bio.c
+++ b/fs/bio.c
@@ -30,7 +30,7 @@
 
 #define BIO_POOL_SIZE 256
 
-static kmem_cache_t *bio_slab __read_mostly;
+static struct kmem_cache *bio_slab __read_mostly;
 
 #define BIOVEC_NR_POOLS 6
 
@@ -44,7 +44,7 @@ mempool_t *bio_split_pool __read_mostly;
 struct biovec_slab {
        int nr_vecs;
        char *name; 
-       kmem_cache_t *slab;
+       struct kmem_cache *slab;
 };
 
 /*
@@ -79,7 +79,6 @@ static struct bio_set *fs_bio_set;
 static inline struct bio_vec *bvec_alloc_bs(gfp_t gfp_mask, int nr, unsigned long *idx, struct bio_set *bs)
 {
        struct bio_vec *bvl;
-       struct biovec_slab *bp;
 
        /*
         * see comment near bvec_array define!
@@ -98,10 +97,12 @@ static inline struct bio_vec *bvec_alloc_bs(gfp_t gfp_mask, int nr, unsigned lon
         * idx now points to the pool we want to allocate from
         */
 
-       bp = bvec_slabs + *idx;
        bvl = mempool_alloc(bs->bvec_pools[*idx], gfp_mask);
-       if (bvl)
+       if (bvl) {
+               struct biovec_slab *bp = bvec_slabs + *idx;
+
                memset(bvl, 0, bp->nr_vecs * sizeof(struct bio_vec));
+       }
 
        return bvl;
 }
@@ -166,7 +167,7 @@ struct bio *bio_alloc_bioset(gfp_t gfp_mask, int nr_iovecs, struct bio_set *bs)
 
                bio_init(bio);
                if (likely(nr_iovecs)) {
-                       unsigned long idx;
+                       unsigned long idx = 0; /* shut up gcc */
 
                        bvl = bvec_alloc_bs(gfp_mask, nr_iovecs, &idx, bs);
                        if (unlikely(!bvl)) {
@@ -559,10 +560,8 @@ struct bio *bio_copy_user(request_queue_t *q, unsigned long uaddr,
                        break;
                }
 
-               if (bio_add_pc_page(q, bio, page, bytes, 0) < bytes) {
-                       ret = -EINVAL;
+               if (bio_add_pc_page(q, bio, page, bytes, 0) < bytes)
                        break;
-               }
 
                len -= bytes;
        }
@@ -621,10 +620,9 @@ static struct bio *__bio_map_user_iov(request_queue_t *q,
 
                nr_pages += end - start;
                /*
-                * transfer and buffer must be aligned to at least hardsector
-                * size for now, in the future we can relax this restriction
+                * buffer must be aligned to at least hardsector size for now
                 */
-               if ((uaddr & queue_dma_alignment(q)) || (len & queue_dma_alignment(q)))
+               if (uaddr & queue_dma_alignment(q))
                        return ERR_PTR(-EINVAL);
        }
 
@@ -750,7 +748,6 @@ struct bio *bio_map_user_iov(request_queue_t *q, struct block_device *bdev,
                             int write_to_vm)
 {
        struct bio *bio;
-       int len = 0, i;
 
        bio = __bio_map_user_iov(q, bdev, iov, iov_count, write_to_vm);
 
@@ -765,18 +762,7 @@ struct bio *bio_map_user_iov(request_queue_t *q, struct block_device *bdev,
         */
        bio_get(bio);
 
-       for (i = 0; i < iov_count; i++)
-               len += iov[i].iov_len;
-
-       if (bio->bi_size == len)
-               return bio;
-
-       /*
-        * don't support partial mappings
-        */
-       bio_endio(bio, bio->bi_size, 0);
-       bio_unmap_user(bio);
-       return ERR_PTR(-EINVAL);
+       return bio;
 }
 
 static void __bio_unmap_user(struct bio *bio)
@@ -930,7 +916,7 @@ void bio_set_pages_dirty(struct bio *bio)
        }
 }
 
-static void bio_release_pages(struct bio *bio)
+void bio_release_pages(struct bio *bio)
 {
        struct bio_vec *bvec = bio->bi_io_vec;
        int i;
@@ -954,16 +940,16 @@ static void bio_release_pages(struct bio *bio)
  * run one bio_put() against the BIO.
  */
 
-static void bio_dirty_fn(void *data);
+static void bio_dirty_fn(struct work_struct *work);
 
-static DECLARE_WORK(bio_dirty_work, bio_dirty_fn, NULL);
+static DECLARE_WORK(bio_dirty_work, bio_dirty_fn);
 static DEFINE_SPINLOCK(bio_dirty_lock);
 static struct bio *bio_dirty_list;
 
 /*
  * This runs in process context
  */
-static void bio_dirty_fn(void *data)
+static void bio_dirty_fn(struct work_struct *work)
 {
        unsigned long flags;
        struct bio *bio;