diff options
Diffstat (limited to 'drivers/md/dm-verity-fec.c')
| -rw-r--r-- | drivers/md/dm-verity-fec.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/drivers/md/dm-verity-fec.c b/drivers/md/dm-verity-fec.c index 66f4c6398f67..cea2b3789736 100644 --- a/drivers/md/dm-verity-fec.c +++ b/drivers/md/dm-verity-fec.c @@ -65,7 +65,7 @@ static u8 *fec_read_parity(struct dm_verity *v, u64 rsb, int index, u8 *res; position = (index + rsb) * v->fec->roots; - block = div64_u64_rem(position, v->fec->roots << SECTOR_SHIFT, &rem); + block = div64_u64_rem(position, v->fec->io_size, &rem); *offset = (unsigned)rem; res = dm_bufio_read(v->fec->bufio, block, buf); @@ -154,7 +154,7 @@ static int fec_decode_bufs(struct dm_verity *v, struct dm_verity_fec_io *fio, /* read the next block when we run out of parity bytes */ offset += v->fec->roots; - if (offset >= v->fec->roots << SECTOR_SHIFT) { + if (offset >= v->fec->io_size) { dm_bufio_release(buf); par = fec_read_parity(v, rsb, block_offset, &offset, &buf); @@ -742,8 +742,13 @@ int verity_fec_ctr(struct dm_verity *v) return -E2BIG; } + if ((f->roots << SECTOR_SHIFT) & ((1 << v->data_dev_block_bits) - 1)) + f->io_size = 1 << v->data_dev_block_bits; + else + f->io_size = v->fec->roots << SECTOR_SHIFT; + f->bufio = dm_bufio_client_create(f->dev->bdev, - f->roots << SECTOR_SHIFT, + f->io_size, 1, 0, NULL, NULL); if (IS_ERR(f->bufio)) { ti->error = "Cannot initialize FEC bufio client"; |