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Subject[PATCH] dm verity fec: Don't add data_blocks to block
Date
Even if block type is metadata,
block in verity_fec_decode() has already the right block number.
So there is no need to add data_blocks to block.

Signed-off-by: Sunwook Eom <speed.eom@samsung.com>
---
 drivers/md/dm-verity-fec.c    | 6 +-----
 drivers/md/dm-verity-fec.h    | 4 +---
 drivers/md/dm-verity-target.c | 4 +---
 3 files changed, 3 insertions(+), 11 deletions(-)

diff --git a/drivers/md/dm-verity-fec.c b/drivers/md/dm-verity-fec.c
index 49147e634046..55f353cae6ec 100644
--- a/drivers/md/dm-verity-fec.c
+++ b/drivers/md/dm-verity-fec.c
@@ -417,8 +417,7 @@ static int fec_bv_copy(struct dm_verity *v, struct
dm_verity_io *io, u8 *data,
  * otherwise to a bio_vec starting from iter.
  */
 int verity_fec_decode(struct dm_verity *v, struct dm_verity_io *io,
-              enum verity_block_type type, sector_t block, u8 *dest,
-              struct bvec_iter *iter)
+              sector_t block, u8 *dest, struct bvec_iter *iter)
 {
     int r;
     struct dm_verity_fec_io *fio = fec_io(io);
@@ -434,9 +433,6 @@ int verity_fec_decode(struct dm_verity *v, struct
dm_verity_io *io,

     fio->level++;

-    if (type == DM_VERITY_BLOCK_TYPE_METADATA)
-        block += v->data_blocks;
-
     /*
      * For RS(M, N), the continuous FEC data is divided into blocks of N
      * bytes. Since block size may not be divisible by N, the last block
diff --git a/drivers/md/dm-verity-fec.h b/drivers/md/dm-verity-fec.h
index 42fbd3a7fc9f..7e2fea0f8cbf 100644
--- a/drivers/md/dm-verity-fec.h
+++ b/drivers/md/dm-verity-fec.h
@@ -68,8 +68,7 @@ struct dm_verity_fec_io {
 extern bool verity_fec_is_enabled(struct dm_verity *v);

 extern int verity_fec_decode(struct dm_verity *v, struct dm_verity_io *io,
-                 enum verity_block_type type, sector_t block,
-                 u8 *dest, struct bvec_iter *iter);
+                 sector_t block, u8 *dest, struct bvec_iter *iter);

 extern unsigned verity_fec_status_table(struct dm_verity *v, unsigned sz,
                     char *result, unsigned maxlen);
@@ -98,7 +97,6 @@ static inline bool verity_fec_is_enabled(struct
dm_verity *v)

 static inline int verity_fec_decode(struct dm_verity *v,
                     struct dm_verity_io *io,
-                    enum verity_block_type type,
                     sector_t block, u8 *dest,
                     struct bvec_iter *iter)
 {
diff --git a/drivers/md/dm-verity-target.c b/drivers/md/dm-verity-target.c
index eec9f252e935..a91b4cb2bf54 100644
--- a/drivers/md/dm-verity-target.c
+++ b/drivers/md/dm-verity-target.c
@@ -303,7 +303,6 @@ static int verity_verify_level(struct dm_verity *v,
struct dm_verity_io *io,
                   v->digest_size) == 0))
             aux->hash_verified = 1;
         else if (verity_fec_decode(v, io,
-                       DM_VERITY_BLOCK_TYPE_METADATA,
                        hash_block, data, NULL) == 0)
             aux->hash_verified = 1;
         else if (verity_handle_err(v,
@@ -521,8 +520,7 @@ static int verity_verify_io(struct dm_verity_io *io)
             if (v->validated_blocks)
                 set_bit(cur_block, v->validated_blocks);
             continue;
-        }
-        else if (verity_fec_decode(v, io, DM_VERITY_BLOCK_TYPE_DATA,
+        } else if (verity_fec_decode(v, io,
                        cur_block, NULL, &start) == 0)
             continue;
         else if (verity_handle_err(v, DM_VERITY_BLOCK_TYPE_DATA,
--
2.17.1
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