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: Milan Broz <mbroz@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c
index 6b9be99..cac064d 100644
--- a/drivers/md/dm-crypt.c
+++ b/drivers/md/dm-crypt.c
@@ -517,6 +517,22 @@
}
}
+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 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);