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dm crypt: move convert_context inside dm_crypt_io 

Move convert_context inside dm_crypt_io.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Milan Broz <mbroz@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
This commit is contained in:
Milan Broz 2008-02-08 02:10:38 +00:00 committed by Alasdair G Kergon
parent 009cd09042
commit 53017030e2
1 changed files with 21 additions and 20 deletions
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41
drivers/md/dm-crypt.c
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@ -27,17 +27,6 @@
#define DM_MSG_PREFIX "crypt"
#define MESG_STR(x) x, sizeof(x)
/*
* per bio private data
*/
struct dm_crypt_io {
struct dm_target *target;
struct bio *base_bio;
struct work_struct work;
atomic_t pending;
int error;
};
/*
* context holding the current state of a multi-part conversion
*/
@ -52,6 +41,20 @@ struct convert_context {
int write;
};
/*
* per bio private data
*/
struct dm_crypt_io {
struct dm_target *target;
struct bio *base_bio;
struct work_struct work;
struct convert_context ctx;
atomic_t pending;
int error;
};
struct crypt_config;
struct crypt_iv_operations {
@ -579,13 +582,12 @@ static void process_write(struct dm_crypt_io *io)
struct crypt_config *cc = io->target->private;
struct bio *base_bio = io->base_bio;
struct bio *clone;
struct convert_context ctx;
unsigned remaining = base_bio->bi_size;
sector_t sector = base_bio->bi_sector - io->target->begin;
atomic_inc(&io->pending);
crypt_convert_init(cc, &ctx, NULL, base_bio, sector, 1);
crypt_convert_init(cc, &io->ctx, NULL, base_bio, sector, 1);
/*
* The allocated buffers can be smaller than the whole bio,
@ -598,10 +600,10 @@ static void process_write(struct dm_crypt_io *io)
return;
}
ctx.bio_out = clone;
ctx.idx_out = 0;
io->ctx.bio_out = clone;
io->ctx.idx_out = 0;
if (unlikely(crypt_convert(cc, &ctx) < 0)) {
if (unlikely(crypt_convert(cc, &io->ctx) < 0)) {
crypt_free_buffer_pages(cc, clone);
bio_put(clone);
crypt_dec_pending(io, -EIO);
@ -609,7 +611,7 @@ static void process_write(struct dm_crypt_io *io)
}
/* crypt_convert should have filled the clone bio */
BUG_ON(ctx.idx_out < clone->bi_vcnt);
BUG_ON(io->ctx.idx_out < clone->bi_vcnt);
clone->bi_sector = cc->start + sector;
remaining -= clone->bi_size;
@ -634,12 +636,11 @@ static void process_write(struct dm_crypt_io *io)
static void process_read_endio(struct dm_crypt_io *io)
{
struct crypt_config *cc = io->target->private;
struct convert_context ctx;
crypt_convert_init(cc, &ctx, io->base_bio, io->base_bio,
crypt_convert_init(cc, &io->ctx, io->base_bio, io->base_bio,
io->base_bio->bi_sector - io->target->begin, 0);
crypt_dec_pending(io, crypt_convert(cc, &ctx));
crypt_dec_pending(io, crypt_convert(cc, &io->ctx));
}
static void kcryptd_do_work(struct work_struct *work)