Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-for-linus-2.6

[linux-2.6-omap-h63xx.git] / fs / bio.c

diff --git a/fs/bio.c b/fs/bio.c
index e49cf7dd2e92ab4dc6deb8c13d20f161ede6d452..a7d4fd3a329954e18c787673ccf4a15e4369b92f 100644 (file)
--- a/fs/bio.c
+++ b/fs/bio.c
@@ -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)
@@ -172,8 +176,6 @@ 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;
@@ -181,7 +183,12 @@ out:
 
 struct bio *bio_alloc(unsigned int __nocast 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)
@@ -274,8 +281,10 @@ struct bio *bio_clone(struct bio *bio, unsigned int __nocast 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;
 }
@@ -1211,6 +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);