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-rw-r--r--fs/bio.c91
1 files changed, 49 insertions, 42 deletions
diff --git a/fs/bio.c b/fs/bio.c
index 124b95c4d58..a040cde7f6f 100644
--- a/fs/bio.c
+++ b/fs/bio.c
@@ -248,7 +248,7 @@ void bio_free(struct bio *bio, struct bio_set *bs)
bvec_free_bs(bs, bio->bi_io_vec, BIO_POOL_IDX(bio));
if (bio_integrity(bio))
- bio_integrity_free(bio, bs);
+ bio_integrity_free(bio);
/*
* If we have front padding, adjust the bio pointer before freeing
@@ -301,48 +301,51 @@ void bio_init(struct bio *bio)
**/
struct bio *bio_alloc_bioset(gfp_t gfp_mask, int nr_iovecs, struct bio_set *bs)
{
+ struct bio_vec *bvl = NULL;
struct bio *bio = NULL;
- void *uninitialized_var(p);
+ unsigned long idx = 0;
+ void *p = NULL;
if (bs) {
p = mempool_alloc(bs->bio_pool, gfp_mask);
-
- if (p)
- bio = p + bs->front_pad;
- } else
+ if (!p)
+ goto err;
+ bio = p + bs->front_pad;
+ } else {
bio = kmalloc(sizeof(*bio), gfp_mask);
+ if (!bio)
+ goto err;
+ }
- if (likely(bio)) {
- struct bio_vec *bvl = NULL;
-
- bio_init(bio);
- if (likely(nr_iovecs)) {
- unsigned long uninitialized_var(idx);
-
- if (nr_iovecs <= BIO_INLINE_VECS) {
- idx = 0;
- bvl = bio->bi_inline_vecs;
- nr_iovecs = BIO_INLINE_VECS;
- } else {
- bvl = bvec_alloc_bs(gfp_mask, nr_iovecs, &idx,
- bs);
- nr_iovecs = bvec_nr_vecs(idx);
- }
- if (unlikely(!bvl)) {
- if (bs)
- mempool_free(p, bs->bio_pool);
- else
- kfree(bio);
- bio = NULL;
- goto out;
- }
- bio->bi_flags |= idx << BIO_POOL_OFFSET;
- bio->bi_max_vecs = nr_iovecs;
- }
- bio->bi_io_vec = bvl;
+ bio_init(bio);
+
+ if (unlikely(!nr_iovecs))
+ goto out_set;
+
+ if (nr_iovecs <= BIO_INLINE_VECS) {
+ bvl = bio->bi_inline_vecs;
+ nr_iovecs = BIO_INLINE_VECS;
+ } else {
+ bvl = bvec_alloc_bs(gfp_mask, nr_iovecs, &idx, bs);
+ if (unlikely(!bvl))
+ goto err_free;
+
+ nr_iovecs = bvec_nr_vecs(idx);
}
-out:
+ bio->bi_flags |= idx << BIO_POOL_OFFSET;
+ bio->bi_max_vecs = nr_iovecs;
+out_set:
+ bio->bi_io_vec = bvl;
+
return bio;
+
+err_free:
+ if (bs)
+ mempool_free(p, bs->bio_pool);
+ else
+ kfree(bio);
+err:
+ return NULL;
}
struct bio *bio_alloc(gfp_t gfp_mask, int nr_iovecs)
@@ -463,10 +466,12 @@ struct bio *bio_clone(struct bio *bio, gfp_t gfp_mask)
if (bio_integrity(bio)) {
int ret;
- ret = bio_integrity_clone(b, bio, fs_bio_set);
+ ret = bio_integrity_clone(b, bio, gfp_mask);
- if (ret < 0)
+ if (ret < 0) {
+ bio_put(b);
return NULL;
+ }
}
return b;
@@ -1524,7 +1529,6 @@ void bioset_free(struct bio_set *bs)
if (bs->bio_pool)
mempool_destroy(bs->bio_pool);
- bioset_integrity_free(bs);
biovec_free_pools(bs);
bio_put_slab(bs);
@@ -1565,9 +1569,6 @@ struct bio_set *bioset_create(unsigned int pool_size, unsigned int front_pad)
if (!bs->bio_pool)
goto bad;
- if (bioset_integrity_create(bs, pool_size))
- goto bad;
-
if (!biovec_create_pools(bs, pool_size))
return bs;
@@ -1584,6 +1585,13 @@ static void __init biovec_init_slabs(void)
int size;
struct biovec_slab *bvs = bvec_slabs + i;
+#ifndef CONFIG_BLK_DEV_INTEGRITY
+ if (bvs->nr_vecs <= BIO_INLINE_VECS) {
+ bvs->slab = NULL;
+ continue;
+ }
+#endif
+
size = bvs->nr_vecs * sizeof(struct bio_vec);
bvs->slab = kmem_cache_create(bvs->name, size, 0,
SLAB_HWCACHE_ALIGN|SLAB_PANIC, NULL);
@@ -1598,7 +1606,6 @@ static int __init init_bio(void)
if (!bio_slabs)
panic("bio: can't allocate bios\n");
- bio_integrity_init_slab();
biovec_init_slabs();
fs_bio_set = bioset_create(BIO_POOL_SIZE, 0);