dm verity: remove unused mempool

Since commit 003b5c571 ("block: Convert drivers to immutable biovecs"),
vec_mempool in struct dm_verity is no longer used.  Remove it and
related definitions.

Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>

1 files changed, 0 insertions, 15 deletions

diff --git a/drivers/md/dm-verity.c b/drivers/md/dm-verity.c
index bb9c6a00e4b0..3adb3323b8c3 100644
--- a/drivers/md/dm-verity.c
+++ b/drivers/md/dm-verity.c
@@ -26,8 +26,6 @@
 #define DM_VERITY_ENV_LENGTH            42
 #define DM_VERITY_ENV_VAR_NAME          "DM_VERITY_ERR_BLOCK_NR"
 
-#define DM_VERITY_IO_VEC_INLINE         16
-#define DM_VERITY_MEMPOOL_SIZE          4
 #define DM_VERITY_DEFAULT_PREFETCH_SIZE 262144
 
 #define DM_VERITY_MAX_LEVELS            63
@@ -76,8 +74,6 @@ struct dm_verity {
         enum verity_mode mode;  /* mode for handling verification errors */
         unsigned corrupted_errs;/* Number of errors for corrupted blocks */
 
-        mempool_t *vec_mempool; /* mempool of bio vector */
-
         struct workqueue_struct *verify_wq;
 
         /* starting blocks for each tree level. 0 is the lowest level. */
@@ -691,9 +687,6 @@ static void verity_dtr(struct dm_target *ti)
         if (v->verify_wq)
                 destroy_workqueue(v->verify_wq);
 
-        if (v->vec_mempool)
-                mempool_destroy(v->vec_mempool);
-
         if (v->bufio)
                 dm_bufio_client_destroy(v->bufio);
 
@@ -962,14 +955,6 @@ static int verity_ctr(struct dm_target *ti, unsigned argc, char **argv)
 
         ti->per_bio_data_size = roundup(sizeof(struct dm_verity_io) + v->shash_descsize + v->digest_size * 2, __alignof__(struct dm_verity_io));
 
-        v->vec_mempool = mempool_create_kmalloc_pool(DM_VERITY_MEMPOOL_SIZE,
-                                        BIO_MAX_PAGES * sizeof(struct bio_vec));
-        if (!v->vec_mempool) {
-                ti->error = "Cannot allocate vector mempool";
-                r = -ENOMEM;
-                goto bad;
-        }
-
         /* WQ_UNBOUND greatly improves performance when running on ramdisk */
         v->verify_wq = alloc_workqueue("kverityd", WQ_CPU_INTENSIVE | WQ_MEM_RECLAIM | WQ_UNBOUND, num_online_cpus());
         if (!v->verify_wq) {