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authorMikulas Patocka <mpatocka@redhat.com>2015-02-13 08:25:26 -0500
committerAlex Shi <alex.shi@linaro.org>2015-06-24 11:39:30 +0800
commit3a8eef4b25840e0895625f56c981c911f10b0976 (patch)
treead977490049b21bb9098ac408432b89b40adf2c2
parent28a646059fa22d1315bc096783721a78614bcb6a (diff)
downloadlinux-linaro-stable-3a8eef4b25840e0895625f56c981c911f10b0976.tar.gz
dm crypt: remove unused io_pool and _crypt_io_pool
The previous commit ("dm crypt: don't allocate pages for a partial request") stopped using the io_pool slab mempool and backing _crypt_io_pool kmem cache. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com> (cherry picked from commit 94f5e0243c48aa01441c987743dc468e2d6eaca2) Signed-off-by: Alex Shi <alex.shi@linaro.org>
-rw-r--r--drivers/md/dm-crypt.c24
1 files changed, 2 insertions, 22 deletions
diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c
index 5d276242859b..2cb693ed64de 100644
--- a/drivers/md/dm-crypt.c
+++ b/drivers/md/dm-crypt.c
@@ -120,7 +120,6 @@ struct crypt_config {
* pool for per bio private data, crypto requests and
* encryption requeusts/buffer pages
*/
- mempool_t *io_pool;
mempool_t *req_pool;
mempool_t *page_pool;
struct bio_set *bs;
@@ -173,8 +172,6 @@ struct crypt_config {
#define MIN_IOS 16
-static struct kmem_cache *_crypt_io_pool;
-
static void clone_init(struct dm_crypt_io *, struct bio *);
static void kcryptd_queue_crypt(struct dm_crypt_io *io);
static u8 *iv_of_dmreq(struct crypt_config *cc, struct dm_crypt_request *dmreq);
@@ -1062,8 +1059,6 @@ static void crypt_dec_pending(struct dm_crypt_io *io)
if (io->ctx.req)
crypt_free_req(cc, io->ctx.req, base_bio);
- if (io != dm_per_bio_data(base_bio, cc->per_bio_data_size))
- mempool_free(io, cc->io_pool);
bio_endio(base_bio, error);
}
@@ -1451,8 +1446,6 @@ static void crypt_dtr(struct dm_target *ti)
mempool_destroy(cc->page_pool);
if (cc->req_pool)
mempool_destroy(cc->req_pool);
- if (cc->io_pool)
- mempool_destroy(cc->io_pool);
if (cc->iv_gen_ops && cc->iv_gen_ops->dtr)
cc->iv_gen_ops->dtr(cc);
@@ -1666,13 +1659,6 @@ static int crypt_ctr(struct dm_target *ti, unsigned int argc, char **argv)
if (ret < 0)
goto bad;
- ret = -ENOMEM;
- cc->io_pool = mempool_create_slab_pool(MIN_IOS, _crypt_io_pool);
- if (!cc->io_pool) {
- ti->error = "Cannot allocate crypt io mempool";
- goto bad;
- }
-
cc->dmreq_start = sizeof(struct ablkcipher_request);
cc->dmreq_start += crypto_ablkcipher_reqsize(any_tfm(cc));
cc->dmreq_start = ALIGN(cc->dmreq_start, __alignof__(struct dm_crypt_request));
@@ -1690,6 +1676,7 @@ static int crypt_ctr(struct dm_target *ti, unsigned int argc, char **argv)
iv_size_padding = crypto_ablkcipher_alignmask(any_tfm(cc));
}
+ ret = -ENOMEM;
cc->req_pool = mempool_create_kmalloc_pool(MIN_IOS, cc->dmreq_start +
sizeof(struct dm_crypt_request) + iv_size_padding + cc->iv_size);
if (!cc->req_pool) {
@@ -1970,15 +1957,9 @@ static int __init dm_crypt_init(void)
{
int r;
- _crypt_io_pool = KMEM_CACHE(dm_crypt_io, 0);
- if (!_crypt_io_pool)
- return -ENOMEM;
-
r = dm_register_target(&crypt_target);
- if (r < 0) {
+ if (r < 0)
DMERR("register failed %d", r);
- kmem_cache_destroy(_crypt_io_pool);
- }
return r;
}
@@ -1986,7 +1967,6 @@ static int __init dm_crypt_init(void)
static void __exit dm_crypt_exit(void)
{
dm_unregister_target(&crypt_target);
- kmem_cache_destroy(_crypt_io_pool);
}
module_init(dm_crypt_init);