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dm crypt: store sector mapping in dm_crypt_io 

Add sector into dm_crypt_io instead of using local variable.

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 02:10:54 +00:00 committed by Alasdair G Kergon
parent 395b167ca0
commit 0c395b0f8d
1 changed files with 7 additions and 7 deletions
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14
drivers/md/dm-crypt.c
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@ -52,6 +52,7 @@ struct dm_crypt_io {
atomic_t pending;
int error;
sector_t sector;
};
struct crypt_config;
@ -526,7 +527,6 @@ static void kcryptd_io_read(struct dm_crypt_io *io)
struct crypt_config *cc = io->target->private;
struct bio *base_bio = io->base_bio;
struct bio *clone;
sector_t sector = base_bio->bi_sector - io->target->begin;
atomic_inc(&io->pending);
@ -546,7 +546,7 @@ static void kcryptd_io_read(struct dm_crypt_io *io)
clone->bi_idx = 0;
clone->bi_vcnt = bio_segments(base_bio);
clone->bi_size = base_bio->bi_size;
clone->bi_sector = cc->start + sector;
clone->bi_sector = cc->start + io->sector;
memcpy(clone->bi_io_vec, bio_iovec(base_bio),
sizeof(struct bio_vec) * clone->bi_vcnt);
@ -585,11 +585,10 @@ static void kcryptd_crypt_write_convert(struct dm_crypt_io *io)
struct bio *base_bio = io->base_bio;
struct bio *clone;
unsigned remaining = base_bio->bi_size;
sector_t sector = base_bio->bi_sector - io->target->begin;
atomic_inc(&io->pending);
crypt_convert_init(cc, &io->ctx, NULL, base_bio, sector);
crypt_convert_init(cc, &io->ctx, NULL, base_bio, io->sector);
/*
* The allocated buffers can be smaller than the whole bio,
@ -617,9 +616,9 @@ static void kcryptd_crypt_write_convert(struct dm_crypt_io *io)
/* crypt_convert should have filled the clone bio */
BUG_ON(io->ctx.idx_out < clone->bi_vcnt);
clone->bi_sector = cc->start + sector;
clone->bi_sector = cc->start + io->sector;
remaining -= clone->bi_size;
sector += bio_sectors(clone);
io->sector += bio_sectors(clone);
/* Grab another reference to the io struct
* before we kick off the request */
@ -651,7 +650,7 @@ static void kcryptd_crypt_read_convert(struct dm_crypt_io *io)
int r = 0;
crypt_convert_init(cc, &io->ctx, io->base_bio, io->base_bio,
io->base_bio->bi_sector - io->target->begin);
io->sector);
r = crypt_convert(cc, &io->ctx);
@ -974,6 +973,7 @@ static int crypt_map(struct dm_target *ti, struct bio *bio,
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);