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dm: use dm_target_offset macro

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Use new dm_target_offset() macro to avoid most references to ti->begin
in dm targets.

Signed-off-by: Alasdair G Kergon <agk@redhat.com>
This commit is contained in:
Alasdair G Kergon 2010-08-12 04:14:11 +01:00
parent 56a67df766
commit b441a262e7
5 changed files with 7 additions and 8 deletions
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4
drivers/md/dm-crypt.c
View File

@ -1284,7 +1284,7 @@ static int crypt_map(struct dm_target *ti, struct bio *bio,
return DM_MAPIO_REMAPPED;
}
io = crypt_io_alloc(ti, bio, bio->bi_sector - ti->begin);
io = crypt_io_alloc(ti, bio, dm_target_offset(ti, bio->bi_sector));
if (bio_data_dir(io->base_bio) == READ)
kcryptd_queue_io(io);
@ -1406,7 +1406,7 @@ static int crypt_merge(struct dm_target *ti, struct bvec_merge_data *bvm,
return max_size;
bvm->bi_bdev = cc->dev->bdev;
bvm->bi_sector = cc->start + bvm->bi_sector - ti->begin;
bvm->bi_sector = cc->start + dm_target_offset(ti, bvm->bi_sector);
return min(max_size, q->merge_bvec_fn(q, bvm, biovec));
}

5
drivers/md/dm-delay.c
View File

@ -281,14 +281,13 @@ static int delay_map(struct dm_target *ti, struct bio *bio,
bio->bi_bdev = dc->dev_write->bdev;
if (bio_sectors(bio))
bio->bi_sector = dc->start_write +
(bio->bi_sector - ti->begin);
dm_target_offset(ti, bio->bi_sector);
return delay_bio(dc, dc->write_delay, bio);
}
bio->bi_bdev = dc->dev_read->bdev;
bio->bi_sector = dc->start_read +
(bio->bi_sector - ti->begin);
bio->bi_sector = dc->start_read + dm_target_offset(ti, bio->bi_sector);
return delay_bio(dc, dc->read_delay, bio);
}

2
drivers/md/dm-linear.c
View File

@ -74,7 +74,7 @@ static sector_t linear_map_sector(struct dm_target *ti, sector_t bi_sector)
{
struct linear_c *lc = ti->private;
return lc->start + (bi_sector - ti->begin);
return lc->start + dm_target_offset(ti, bi_sector);
}
static void linear_map_bio(struct dm_target *ti, struct bio *bio)

2
drivers/md/dm-raid1.c
View File

@ -445,7 +445,7 @@ static sector_t map_sector(struct mirror *m, struct bio *bio)
{
if (unlikely(!bio->bi_size))
return 0;
return m->offset + (bio->bi_sector - m->ms->ti->begin);
return m->offset + dm_target_offset(m->ms->ti, bio->bi_sector);
}
static void map_bio(struct mirror *m, struct bio *bio)

2
drivers/md/dm-stripe.c
View File

@ -222,7 +222,7 @@ static int stripe_map(struct dm_target *ti, struct bio *bio,
return DM_MAPIO_REMAPPED;
}
offset = bio->bi_sector - ti->begin;
offset = dm_target_offset(ti, bio->bi_sector);
chunk = offset >> sc->chunk_shift;
stripe = sector_div(chunk, sc->stripes);