[IA64-SGI] fix bte_copy() calling get_nasid() while preemptible

[linux-2.6] / fs / bio.c

diff --git a/fs/bio.c b/fs/bio.c
index 24e4045788e2aed120056c40ac297ed264fd3272..7d81a93afd480c9d9f0335c208f130946b1dc259 100644 (file)
--- 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
@@ -75,7 +75,7 @@ struct bio_set {
  */
 static struct bio_set *fs_bio_set;
 
-static inline struct bio_vec *bvec_alloc_bs(unsigned int __nocast gfp_mask, int nr, unsigned long *idx, struct bio_set *bs)
+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;
@@ -105,18 +105,22 @@ static inline struct bio_vec *bvec_alloc_bs(unsigned int __nocast gfp_mask, int
        return bvl;
 }
 
-/*
- * default destructor for a bio allocated with bio_alloc_bioset()
- */
-static void bio_destructor(struct bio *bio)
+void bio_free(struct bio *bio, struct bio_set *bio_set)
 {
        const int pool_idx = BIO_POOL_IDX(bio);
-       struct bio_set *bs = bio->bi_set;
 
        BIO_BUG_ON(pool_idx >= BIOVEC_NR_POOLS);
 
-       mempool_free(bio->bi_io_vec, bs->bvec_pools[pool_idx]);
-       mempool_free(bio, bs->bio_pool);
+       mempool_free(bio->bi_io_vec, bio_set->bvec_pools[pool_idx]);
+       mempool_free(bio, bio_set->bio_pool);
+}
+
+/*
+ * default destructor for a bio allocated with bio_alloc_bioset()
+ */
+static void bio_fs_destructor(struct bio *bio)
+{
+       bio_free(bio, fs_bio_set);
 }
 
 inline void bio_init(struct bio *bio)
@@ -151,7 +155,7 @@ inline void bio_init(struct bio *bio)
  *   allocate bio and iovecs from the memory pools specified by the
  *   bio_set structure.
  **/
-struct bio *bio_alloc_bioset(unsigned int __nocast gfp_mask, int nr_iovecs, struct bio_set *bs)
+struct bio *bio_alloc_bioset(gfp_t gfp_mask, int nr_iovecs, struct bio_set *bs)
 {
        struct bio *bio = mempool_alloc(bs->bio_pool, gfp_mask);
 
@@ -172,16 +176,19 @@ struct bio *bio_alloc_bioset(unsigned int __nocast gfp_mask, int nr_iovecs, stru
                        bio->bi_max_vecs = bvec_slabs[idx].nr_vecs;
                }
                bio->bi_io_vec = bvl;
-               bio->bi_destructor = bio_destructor;
-               bio->bi_set = bs;
        }
 out:
        return bio;
 }
 
-struct bio *bio_alloc(unsigned int __nocast gfp_mask, int nr_iovecs)
+struct bio *bio_alloc(gfp_t gfp_mask, int nr_iovecs)
 {
-       return bio_alloc_bioset(gfp_mask, nr_iovecs, fs_bio_set);
+       struct bio *bio = bio_alloc_bioset(gfp_mask, nr_iovecs, fs_bio_set);
+
+       if (bio)
+               bio->bi_destructor = bio_fs_destructor;
+
+       return bio;
 }
 
 void zero_fill_bio(struct bio *bio)
@@ -249,19 +256,16 @@ 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);
 }
@@ -273,12 +277,14 @@ inline void __bio_clone(struct bio *bio, struct bio *bio_src)
  *
  *     Like __bio_clone, only also allocates the returned bio
  */
-struct bio *bio_clone(struct bio *bio, unsigned int __nocast gfp_mask)
+struct bio *bio_clone(struct bio *bio, gfp_t gfp_mask)
 {
        struct bio *b = bio_alloc_bioset(gfp_mask, bio->bi_max_vecs, fs_bio_set);
 
-       if (b)
+       if (b) {
+               b->bi_destructor = bio_fs_destructor;
                __bio_clone(b, bio);
+       }
 
        return b;
 }
@@ -677,7 +683,7 @@ struct bio *bio_map_user(request_queue_t *q, struct block_device *bdev,
 {
        struct sg_iovec iov;
 
-       iov.iov_base = (__user void *)uaddr;
+       iov.iov_base = (void __user *)uaddr;
        iov.iov_len = len;
 
        return bio_map_user_iov(q, bdev, &iov, 1, write_to_vm);
@@ -1072,7 +1078,7 @@ struct bio_pair *bio_split(struct bio *bi, mempool_t *pool, int first_sectors)
        return bp;
 }
 
-static void *bio_pair_alloc(unsigned int __nocast gfp_flags, void *data)
+static void *bio_pair_alloc(gfp_t gfp_flags, void *data)
 {
        return kmalloc(sizeof(struct bio_pair), gfp_flags);
 }
@@ -1214,6 +1220,7 @@ subsys_initcall(init_bio);
 
 EXPORT_SYMBOL(bio_alloc);
 EXPORT_SYMBOL(bio_put);
+EXPORT_SYMBOL(bio_free);
 EXPORT_SYMBOL(bio_endio);
 EXPORT_SYMBOL(bio_init);
 EXPORT_SYMBOL(__bio_clone);