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Commit e42c3f91 authored by Mikulas Patocka's avatar Mikulas Patocka Committed by Alasdair G Kergon
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dm verity: use per_bio_data 



Replace io_mempool with per_bio_data in dm-verity.

Signed-off-by: default avatarMikulas Patocka <mpatocka@redhat.com>
Signed-off-by: default avatarAlasdair G Kergon <agk@redhat.com>
parent 39cf0ed2

drivers/md/dm-verity.c

+4 −18
Original line number Diff line number Diff line
@@ -55,7 +55,6 @@ struct dm_verity { 
	unsigned shash_descsize;/* the size of temporary space for crypto */

	int hash_failed;	/* set to 1 if hash of any block failed */



	mempool_t *io_mempool;	/* mempool of struct dm_verity_io */

	mempool_t *vec_mempool;	/* mempool of bio vector */



	struct workqueue_struct *verify_wq;
@@ -66,7 +65,6 @@ struct dm_verity { 


struct dm_verity_io {

	struct dm_verity *v;

	struct bio *bio;



	/* original values of bio->bi_end_io and bio->bi_private */

	bio_end_io_t *orig_bi_end_io;
@@ -389,8 +387,8 @@ test_block_hash: 
 */

static void verity_finish_io(struct dm_verity_io *io, int error)

{

	struct bio *bio = io->bio;

	struct dm_verity *v = io->v;

	struct bio *bio = dm_bio_from_per_bio_data(io, v->ti->per_bio_data_size);



	bio->bi_end_io = io->orig_bi_end_io;

	bio->bi_private = io->orig_bi_private;
@@ -398,8 +396,6 @@ static void verity_finish_io(struct dm_verity_io *io, int error) 
	if (io->io_vec != io->io_vec_inline)

		mempool_free(io->io_vec, v->vec_mempool);



	mempool_free(io, v->io_mempool);



	bio_endio(bio, error);

}
@@ -486,9 +482,8 @@ static int verity_map(struct dm_target *ti, struct bio *bio, 
	if (bio_data_dir(bio) == WRITE)

		return -EIO;



	io = mempool_alloc(v->io_mempool, GFP_NOIO);

	io = dm_per_bio_data(bio, ti->per_bio_data_size);

	io->v = v;

	io->bio = bio;

	io->orig_bi_end_io = bio->bi_end_io;

	io->orig_bi_private = bio->bi_private;

	io->block = bio->bi_sector >> (v->data_dev_block_bits - SECTOR_SHIFT);
@@ -610,9 +605,6 @@ static void verity_dtr(struct dm_target *ti) 
	if (v->vec_mempool)

		mempool_destroy(v->vec_mempool);



	if (v->io_mempool)

		mempool_destroy(v->io_mempool);



	if (v->bufio)

		dm_bufio_client_destroy(v->bufio);
@@ -841,13 +833,7 @@ static int verity_ctr(struct dm_target *ti, unsigned argc, char **argv) 
		goto bad;

	}



	v->io_mempool = mempool_create_kmalloc_pool(DM_VERITY_MEMPOOL_SIZE,

	  sizeof(struct dm_verity_io) + v->shash_descsize + v->digest_size * 2);

	if (!v->io_mempool) {

		ti->error = "Cannot allocate io mempool";

		r = -ENOMEM;

		goto bad;

	}

	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));
@@ -875,7 +861,7 @@ bad: 


static struct target_type verity_target = {

	.name		= "verity",

	.version	= {1, 0, 0},

	.version	= {1, 1, 0},

	.module		= THIS_MODULE,

	.ctr		= verity_ctr,

	.dtr		= verity_dtr,