btrfs: check integrity: remove local copy of csum_size

The state structure unnecessarily stores copy of the checksum size, that
can be now easily obtained from fs_info.

Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/fs/btrfs/check-integrity.c b/fs/btrfs/check-integrity.c
index 288fd4b..e90e92e 100644 (file)
--- a/fs/btrfs/check-integrity.c
+++ b/fs/btrfs/check-integrity.c
@@ -233,7 +233,6 @@ struct btrfsic_stack_frame {
 struct btrfsic_state {
        u32 print_mask;
        int include_extent_data;
-       int csum_size;
        struct list_head all_blocks_list;
        struct btrfsic_block_hashtable block_hashtable;
        struct btrfsic_block_link_hashtable block_link_hashtable;
@@ -660,8 +659,6 @@ static int btrfsic_process_superblock(struct btrfsic_state *state,
                return -1;
        }
 
-       state->csum_size = state->fs_info->csum_size;
-
        for (pass = 0; pass < 3; pass++) {
                int num_copies;
                int mirror_num;
@@ -1723,7 +1720,7 @@ static noinline_for_stack int btrfsic_test_for_metadata(
                crypto_shash_update(shash, data, sublen);
        }
        crypto_shash_final(shash, csum);
-       if (memcmp(csum, h->csum, state->csum_size))
+       if (memcmp(csum, h->csum, fs_info->csum_size))
                return 1;
 
        return 0; /* is metadata */
@@ -2797,7 +2794,6 @@ int btrfsic_mount(struct btrfs_fs_info *fs_info,
        state->fs_info = fs_info;
        state->print_mask = print_mask;
        state->include_extent_data = including_extent_data;
-       state->csum_size = 0;
        state->metablock_size = fs_info->nodesize;
        state->datablock_size = fs_info->sectorsize;
        INIT_LIST_HEAD(&state->all_blocks_list);