Remove the unused "data_start" variable. It is always set to zero and the user can't override it. If the user needs to use some existing offset within a block device, it is possible to use the linear target.
Signed-off-by: Mikulas Patocka <[email protected]> --- drivers/md/dm-verity-target.c | 6 +++--- drivers/md/dm-verity.h | 1 - 2 files changed, 3 insertions(+), 4 deletions(-) Index: linux-2.6/drivers/md/dm-verity-target.c =================================================================== --- linux-2.6.orig/drivers/md/dm-verity-target.c 2024-11-07 12:49:00.000000000 +0100 +++ linux-2.6/drivers/md/dm-verity-target.c 2024-11-18 15:31:43.000000000 +0100 @@ -93,7 +93,7 @@ static void dm_bufio_alloc_callback(stru */ static sector_t verity_map_sector(struct dm_verity *v, sector_t bi_sector) { - return v->data_start + dm_target_offset(v->ti, bi_sector); + return dm_target_offset(v->ti, bi_sector); } /* @@ -952,7 +952,7 @@ static int verity_prepare_ioctl(struct d *bdev = v->data_dev->bdev; - if (v->data_start || ti->len != bdev_nr_sectors(v->data_dev->bdev)) + if (ti->len != bdev_nr_sectors(v->data_dev->bdev)) return 1; return 0; } @@ -962,7 +962,7 @@ static int verity_iterate_devices(struct { struct dm_verity *v = ti->private; - return fn(ti, v->data_dev, v->data_start, ti->len, data); + return fn(ti, v->data_dev, 0, ti->len, data); } static void verity_io_hints(struct dm_target *ti, struct queue_limits *limits) Index: linux-2.6/drivers/md/dm-verity.h =================================================================== --- linux-2.6.orig/drivers/md/dm-verity.h 2024-11-07 12:49:00.000000000 +0100 +++ linux-2.6/drivers/md/dm-verity.h 2024-11-18 15:31:15.000000000 +0100 @@ -50,7 +50,6 @@ struct dm_verity { unsigned int sig_size; /* root digest signature size */ #endif /* CONFIG_SECURITY */ unsigned int salt_size; - sector_t data_start; /* data offset in 512-byte sectors */ sector_t hash_start; /* hash start in blocks */ sector_t data_blocks; /* the number of data blocks */ sector_t hash_blocks; /* the number of hash blocks */
