Commit dc440d1e authored by Milan Broz's avatar Milan Broz Committed by Alasdair G Kergon
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dm crypt: tidy crypt alloc 



Factor out crypt io allocation code.
Later patches will call it from another place.

No functional change.

Signed-off-by: default avatarMilan Broz <mbroz@redhat.com>
Signed-off-by: default avatarAlasdair G Kergon <agk@redhat.com>
parent 3e1a8bdd

drivers/md/dm-crypt.c

+17 −7
Original line number Diff line number Diff line
@@ -517,6 +517,22 @@ static void crypt_free_buffer_pages(struct crypt_config *cc, struct bio *clone) 
	}

}



static struct dm_crypt_io *crypt_io_alloc(struct dm_target *ti,

					  struct bio *bio, sector_t sector)

{

	struct crypt_config *cc = ti->private;

	struct dm_crypt_io *io;



	io = mempool_alloc(cc->io_pool, GFP_NOIO);

	io->target = ti;

	io->base_bio = bio;

	io->sector = sector;

	io->error = 0;

	atomic_set(&io->pending, 0);



	return io;

}



static void crypt_inc_pending(struct dm_crypt_io *io)

{

	atomic_inc(&io->pending);
@@ -1113,15 +1129,9 @@ static void crypt_dtr(struct dm_target *ti) 
static int crypt_map(struct dm_target *ti, struct bio *bio,

		     union map_info *map_context)

{

	struct crypt_config *cc = ti->private;

	struct dm_crypt_io *io;



	io = mempool_alloc(cc->io_pool, GFP_NOIO);

	io->target = ti;

	io->base_bio = bio;

	io->sector = bio->bi_sector - ti->begin;

	io->error = 0;

	atomic_set(&io->pending, 0);

	io = crypt_io_alloc(ti, bio, bio->bi_sector - ti->begin);



	if (bio_data_dir(io->base_bio) == READ)

		kcryptd_queue_io(io);