On  1.02.2018 08:45, Qu Wenruo wrote:
> Since we're moving tons of codes, it's a good idea to fix all errors and
> warnings from checkpatch.
> 
> Signed-off-by: Qu Wenruo <w...@suse.com>

Having this patch separate for review is fine, but in the end I think it
will be best if it's squashed in the commit that moves stuff around so
we don't introduce needless noise.

> ---
>  check/lowmem.c |  65 +++++++++------
>  check/main.c   | 253 
> +++++++++++++++++++++++++++++----------------------------
>  2 files changed, 165 insertions(+), 153 deletions(-)
> 
> diff --git a/check/lowmem.c b/check/lowmem.c
> index a3bda97fdea8..3e7fe148bc56 100644
> --- a/check/lowmem.c
> +++ b/check/lowmem.c
> @@ -322,7 +322,8 @@ static int repair_tree_block_ref(struct 
> btrfs_trans_handle *trans,
>                       goto out;
>  
>               eb = path.nodes[0];
> -             ei = btrfs_item_ptr(eb, path.slots[0], struct 
> btrfs_extent_item);
> +             ei = btrfs_item_ptr(eb, path.slots[0],
> +                                 struct btrfs_extent_item);
>  
>               btrfs_set_extent_refs(eb, ei, 0);
>               btrfs_set_extent_generation(eb, ei, generation);
> @@ -730,7 +731,9 @@ begin:
>               need_research = 0;
>               btrfs_release_path(path);
>               ret = btrfs_search_slot(NULL, root, ref_key, path, 0, 0);
> -             /* the item was deleted, let path point to the last checked 
> item */
> +             /*
> +              * the item was deleted, let path point to the last checked item
> +              */
>               if (ret > 0) {
>                       if (path->slots[0] == 0)
>                               btrfs_prev_leaf(root, path);
> @@ -1486,7 +1489,8 @@ static int check_file_extent(struct btrfs_root *root, 
> struct btrfs_key *fkey,
>               search_start = disk_bytenr;
>               search_len = disk_num_bytes;
>       }
> -     ret = count_csum_range(root->fs_info, search_start, search_len, 
> &csum_found);
> +     ret = count_csum_range(root->fs_info, search_start, search_len,
> +                            &csum_found);
>       if (csum_found > 0 && nodatasum) {
>               err |= ODD_CSUM_ITEM;
>               error("root %llu EXTENT_DATA[%llu %llu] nodatasum shouldn't 
> have datasum",
> @@ -1497,7 +1501,8 @@ static int check_file_extent(struct btrfs_root *root, 
> struct btrfs_key *fkey,
>               error("root %llu EXTENT_DATA[%llu %llu] csum missing, have: 
> %llu, expected: %llu",
>                     root->objectid, fkey->objectid, fkey->offset,
>                     csum_found, search_len);
> -     } else if (extent_type == BTRFS_FILE_EXTENT_PREALLOC && csum_found > 0) 
> {
> +     } else if (extent_type == BTRFS_FILE_EXTENT_PREALLOC &&
> +                csum_found > 0) {
>               err |= ODD_CSUM_ITEM;
>               error("root %llu EXTENT_DATA[%llu %llu] prealloc shouldn't have 
> csum, but has: %llu",
>                     root->objectid, fkey->objectid, fkey->offset, csum_found);
> @@ -1561,7 +1566,8 @@ loop:
>       }
>  
>  special_case:
> -     di = btrfs_item_ptr(path.nodes[0], path.slots[0], struct 
> btrfs_dir_item);
> +     di = btrfs_item_ptr(path.nodes[0], path.slots[0],
> +                         struct btrfs_dir_item);
>       cur = 0;
>       total = btrfs_item_size_nr(path.nodes[0], path.slots[0]);
>  
> @@ -1913,7 +1919,8 @@ static int check_inode_item(struct btrfs_root *root, 
> struct btrfs_path *path,
>       nodatasum = btrfs_inode_flags(node, ii) & BTRFS_INODE_NODATASUM;
>  
>       while (1) {
> -             btrfs_item_key_to_cpu(path->nodes[0], &last_key, 
> path->slots[0]);
> +             btrfs_item_key_to_cpu(path->nodes[0], &last_key,
> +                                   path->slots[0]);
>               ret = btrfs_next_item(root, path);
>               if (ret < 0) {
>                       /* out will fill 'err' rusing current statistics */
> @@ -2360,7 +2367,7 @@ static int check_tree_block_ref(struct btrfs_root *root,
>                                * Check if the backref points to valid
>                                * referencer
>                                */
> -                             found_ref = !check_tree_block_ref( root, NULL,
> +                             found_ref = !check_tree_block_ref(root, NULL,
>                                               offset, level + 1, owner,
>                                               NULL);
>                       }
> @@ -2500,7 +2507,8 @@ static int repair_extent_data_item(struct 
> btrfs_trans_handle *trans,
>               if (ret)
>                       goto out;
>               eb = path.nodes[0];
> -             ei = btrfs_item_ptr(eb, path.slots[0], struct 
> btrfs_extent_item);
> +             ei = btrfs_item_ptr(eb, path.slots[0],
> +                                 struct btrfs_extent_item);
>  
>               btrfs_set_extent_refs(eb, ei, 0);
>               btrfs_set_extent_generation(eb, ei, generation);
> @@ -2657,7 +2665,8 @@ static int check_extent_data_item(struct btrfs_root 
> *root,
>               }
>               if (type == BTRFS_EXTENT_DATA_REF_KEY) {
>                       ref_root = btrfs_extent_data_ref_root(leaf, dref);
> -                     ref_objectid = btrfs_extent_data_ref_objectid(leaf, 
> dref);
> +                     ref_objectid = btrfs_extent_data_ref_objectid(leaf,
> +                                                                   dref);
>                       ref_offset = btrfs_extent_data_ref_offset(leaf, dref);
>  
>                       if (ref_objectid == fi_key.objectid &&
> @@ -2820,8 +2829,8 @@ static int check_block_group_item(struct btrfs_fs_info 
> *fs_info,
>                       if (!(bg_flags & BTRFS_BLOCK_GROUP_DATA)) {
>                               error(
>                       "bad extent[%llu, %llu) type mismatch with chunk",
> -                                     extent_key.objectid,
> -                                     extent_key.objectid + 
> extent_key.offset);
> +                                   extent_key.objectid,
> +                                   extent_key.objectid + extent_key.offset);
>                               err |= CHUNK_TYPE_MISMATCH;
>                       }
>               } else if (flags & BTRFS_EXTENT_FLAG_TREE_BLOCK) {
> @@ -3175,7 +3184,8 @@ static int check_extent_data_backref(struct 
> btrfs_fs_info *fs_info,
>                   btrfs_header_owner(leaf) != root_id)
>                       goto next;
>               btrfs_item_key_to_cpu(leaf, &key, slot);
> -             if (key.objectid != objectid || key.type != 
> BTRFS_EXTENT_DATA_KEY)
> +             if (key.objectid != objectid || key.type !=
> +                 BTRFS_EXTENT_DATA_KEY)
>                       break;
>               fi = btrfs_item_ptr(leaf, slot, struct btrfs_file_extent_item);
>               /*
> @@ -3205,7 +3215,8 @@ out:
>       if (found_count != count) {
>               error(
>  "extent[%llu, %llu] referencer count mismatch (root: %llu, owner: %llu, 
> offset: %llu) wanted: %u, have: %u",
> -                     bytenr, len, root_id, objectid, offset, count, 
> found_count);
> +                     bytenr, len, root_id, objectid, offset, count,
> +                     found_count);
>               return REFERENCER_MISSING;
>       }
>       return 0;
> @@ -3975,13 +3986,12 @@ static int walk_down_tree(struct btrfs_trans_handle 
> *trans,
>                                              nrefs, account_file_data);
>                       err |= ret;
>                       break;
> -             } else {
> -                     if (check || !check_all) {
> -                             ret = btrfs_check_node(root, NULL, cur);
> -                             if (ret != BTRFS_TREE_BLOCK_CLEAN) {
> -                                     err |= -EIO;
> -                                     break;
> -                             }
> +             }
> +             if (check || !check_all) {
> +                     ret = btrfs_check_node(root, NULL, cur);
> +                     if (ret != BTRFS_TREE_BLOCK_CLEAN) {
> +                             err |= -EIO;
> +                             break;
>                       }
>               }
>  
> @@ -4001,7 +4011,8 @@ static int walk_down_tree(struct btrfs_trans_handle 
> *trans,
>                       continue;
>               }
>  
> -             next = btrfs_find_tree_block(fs_info, bytenr, 
> fs_info->nodesize);
> +             next = btrfs_find_tree_block(fs_info, bytenr,
> +                                          fs_info->nodesize);
>               if (!next || !btrfs_buffer_uptodate(next, ptr_gen)) {
>                       free_extent_buffer(next);
>                       reada_walk_down(root, cur, path->slots[*level]);
> @@ -4022,7 +4033,7 @@ static int walk_down_tree(struct btrfs_trans_handle 
> *trans,
>  
>               ret = check_child_node(cur, path->slots[*level], next);
>               err |= ret;
> -             if (ret < 0) 
> +             if (ret < 0)
>                       break;
>  
>               if (btrfs_is_leaf(next))
> @@ -4041,7 +4052,8 @@ static int walk_down_tree(struct btrfs_trans_handle 
> *trans,
>               path->slots[*level] = 0;
>               account_file_data = 0;
>  
> -             update_nodes_refs(root, (u64)-1, next, nrefs, *level, 
> check_all);
> +             update_nodes_refs(root, (u64)-1, next, nrefs, *level,
> +                               check_all);
>       }
>       return err;
>  }
> @@ -4058,11 +4070,10 @@ static int walk_up_tree(struct btrfs_root *root, 
> struct btrfs_path *path,
>                       path->slots[i]++;
>                       *level = i;
>                       return 0;
> -             } else {
> -                     free_extent_buffer(path->nodes[*level]);
> -                     path->nodes[*level] = NULL;
> -                     *level = i + 1;
>               }
> +             free_extent_buffer(path->nodes[*level]);
> +             path->nodes[*level] = NULL;
> +             *level = i + 1;
>       }
>       return 1;
>  }
> diff --git a/check/main.c b/check/main.c
> index aec3881fc043..f6874cd86543 100644
> --- a/check/main.c
> +++ b/check/main.c
> @@ -1720,14 +1720,13 @@ static int walk_up_tree(struct btrfs_root *root, 
> struct btrfs_path *path,
>                       path->slots[i]++;
>                       *level = i;
>                       return 0;
> -             } else {
> -                     free_extent_buffer(path->nodes[*level]);
> -                     path->nodes[*level] = NULL;
> -                     BUG_ON(*level > wc->active_node);
> -                     if (*level == wc->active_node)
> -                             leave_shared_node(root, wc, *level);
> -                     *level = i + 1;
>               }
> +             free_extent_buffer(path->nodes[*level]);
> +             path->nodes[*level] = NULL;
> +             BUG_ON(*level > wc->active_node);
> +             if (*level == wc->active_node)
> +                     leave_shared_node(root, wc, *level);
> +             *level = i + 1;
>       }
>       return 1;
>  }
> @@ -3488,22 +3487,21 @@ static int all_backpointers_checked(struct 
> extent_record *rec, int print_errs)
>                               goto out;
>                       if (back->is_data) {
>                               dback = to_data_backref(back);
> -                             fprintf(stderr, "Data backref %llu %s %llu"
> -                                     " owner %llu offset %llu num_refs %lu"
> -                                     " not found in extent tree\n",
> +                             fprintf(stderr,
> +"Data backref %llu %s %llu owner %llu offset %llu num_refs %lu not found in 
> extent tree\n",
>                                       (unsigned long long)rec->start,
>                                       back->full_backref ?
>                                       "parent" : "root",
>                                       back->full_backref ?
> -                                     (unsigned long long)dback->parent:
> +                                     (unsigned long long)dback->parent :
>                                       (unsigned long long)dback->root,
>                                       (unsigned long long)dback->owner,
>                                       (unsigned long long)dback->offset,
>                                       (unsigned long)dback->num_refs);
>                       } else {
>                               tback = to_tree_backref(back);
> -                             fprintf(stderr, "Tree backref %llu parent %llu"
> -                                     " root %llu not found in extent tree\n",
> +                             fprintf(stderr,
> +"Tree backref %llu parent %llu root %llu not found in extent tree\n",
>                                       (unsigned long long)rec->start,
>                                       (unsigned long long)tback->parent,
>                                       (unsigned long long)tback->root);
> @@ -3514,7 +3512,8 @@ static int all_backpointers_checked(struct 
> extent_record *rec, int print_errs)
>                       if (!print_errs)
>                               goto out;
>                       tback = to_tree_backref(back);
> -                     fprintf(stderr, "Backref %llu %s %llu not referenced 
> back %p\n",
> +                     fprintf(stderr,
> +                             "Backref %llu %s %llu not referenced back %p\n",
>                               (unsigned long long)rec->start,
>                               back->full_backref ? "parent" : "root",
>                               back->full_backref ?
> @@ -3527,26 +3526,25 @@ static int all_backpointers_checked(struct 
> extent_record *rec, int print_errs)
>                               err = 1;
>                               if (!print_errs)
>                                       goto out;
> -                             fprintf(stderr, "Incorrect local backref count"
> -                                     " on %llu %s %llu owner %llu"
> -                                     " offset %llu found %u wanted %u back 
> %p\n",
> +                             fprintf(stderr,
> +"Incorrect local backref count on %llu %s %llu owner %llu offset %llu found 
> %u wanted %u back %p\n",
>                                       (unsigned long long)rec->start,
>                                       back->full_backref ?
>                                       "parent" : "root",
>                                       back->full_backref ?
> -                                     (unsigned long long)dback->parent:
> +                                     (unsigned long long)dback->parent :
>                                       (unsigned long long)dback->root,
>                                       (unsigned long long)dback->owner,
>                                       (unsigned long long)dback->offset,
> -                                     dback->found_ref, dback->num_refs, 
> back);
> +                                     dback->found_ref, dback->num_refs,
> +                                     back);
>                       }
>                       if (dback->disk_bytenr != rec->start) {
>                               err = 1;
>                               if (!print_errs)
>                                       goto out;
> -                             fprintf(stderr, "Backref disk bytenr does not"
> -                                     " match extent record, bytenr=%llu, "
> -                                     "ref bytenr=%llu\n",
> +                             fprintf(stderr,
> +"Backref disk bytenr does not match extent record, bytenr=%llu, ref 
> bytenr=%llu\n",
>                                       (unsigned long long)rec->start,
>                                       (unsigned long long)dback->disk_bytenr);
>                       }
> @@ -3555,9 +3553,8 @@ static int all_backpointers_checked(struct 
> extent_record *rec, int print_errs)
>                               err = 1;
>                               if (!print_errs)
>                                       goto out;
> -                             fprintf(stderr, "Backref bytes do not match "
> -                                     "extent backref, bytenr=%llu, ref "
> -                                     "bytes=%llu, backref bytes=%llu\n",
> +                             fprintf(stderr,
> +"Backref bytes do not match extent backref, bytenr=%llu, ref bytes=%llu, 
> backref bytes=%llu\n",
>                                       (unsigned long long)rec->start,
>                                       (unsigned long long)rec->nr,
>                                       (unsigned long long)dback->bytes);
> @@ -3574,8 +3571,8 @@ static int all_backpointers_checked(struct 
> extent_record *rec, int print_errs)
>               err = 1;
>               if (!print_errs)
>                       goto out;
> -             fprintf(stderr, "Incorrect global backref count "
> -                     "on %llu found %llu wanted %llu\n",
> +             fprintf(stderr,
> +"Incorrect global backref count on %llu found %llu wanted %llu\n",
>                       (unsigned long long)rec->start,
>                       (unsigned long long)found,
>                       (unsigned long long)rec->refs);
> @@ -3745,6 +3742,7 @@ static int swap_values(struct btrfs_root *root, struct 
> btrfs_path *path,
>                                   sizeof(struct btrfs_key_ptr));
>               if (slot == 0) {
>                       struct btrfs_disk_key key;
> +
>                       btrfs_node_key(buf, &key, 0);
>                       btrfs_fixup_low_keys(root, path, &key,
>                                            btrfs_header_level(buf) + 1);
> @@ -3877,8 +3875,8 @@ again:
>                               ret = delete_bogus_item(root, path, buf, i);
>                               if (!ret)
>                                       goto again;
> -                             fprintf(stderr, "item is off the end of the "
> -                                     "leaf, can't fix\n");
> +                             fprintf(stderr,
> +                             "item is off the end of the leaf, can't fix\n");
>                               ret = -EIO;
>                               break;
>                       }
> @@ -4066,7 +4064,7 @@ static struct tree_backref *find_tree_backref(struct 
> extent_record *rec,
>       struct extent_backref *node;
>       struct tree_backref *back;
>  
> -     while(cur != &rec->backrefs) {
> +     while (cur != &rec->backrefs) {
>               node = to_extent_backref(cur);
>               cur = cur->next;
>               if (node->is_data)
> @@ -4118,7 +4116,7 @@ static struct data_backref *find_data_backref(struct 
> extent_record *rec,
>       struct extent_backref *node;
>       struct data_backref *back;
>  
> -     while(cur != &rec->backrefs) {
> +     while (cur != &rec->backrefs) {
>               node = to_extent_backref(cur);
>               cur = cur->next;
>               if (!node->is_data)
> @@ -4344,12 +4342,13 @@ static int add_extent_rec(struct cache_tree 
> *extent_cache,
>  
>               if (tmpl->extent_item_refs && !dup) {
>                       if (rec->extent_item_refs) {
> -                             fprintf(stderr, "block %llu rec "
> -                                     "extent_item_refs %llu, passed %llu\n",
> +                             fprintf(stderr,
> +                     "block %llu rec extent_item_refs %llu, passed %llu\n",
>                                       (unsigned long long)tmpl->start,
>                                       (unsigned long long)
>                                                       rec->extent_item_refs,
> -                                     (unsigned long 
> long)tmpl->extent_item_refs);
> +                                     (unsigned long long)
> +                                                     tmpl->extent_item_refs);
>                       }
>                       rec->extent_item_refs = tmpl->extent_item_refs;
>               }
> @@ -4433,8 +4432,8 @@ static int add_tree_backref(struct cache_tree 
> *extent_cache, u64 bytenr,
>  
>       if (found_ref) {
>               if (back->node.found_ref) {
> -                     fprintf(stderr, "Extent back ref already exists "
> -                             "for %llu parent %llu root %llu \n",
> +                     fprintf(stderr,
> +     "Extent back ref already exists for %llu parent %llu root %llu\n",
>                               (unsigned long long)bytenr,
>                               (unsigned long long)parent,
>                               (unsigned long long)root);
> @@ -4442,8 +4441,8 @@ static int add_tree_backref(struct cache_tree 
> *extent_cache, u64 bytenr,
>               back->node.found_ref = 1;
>       } else {
>               if (back->node.found_extent_tree) {
> -                     fprintf(stderr, "Extent back ref already exists "
> -                             "for %llu parent %llu root %llu \n",
> +                     fprintf(stderr,
> +     "Extent back ref already exists for %llu parent %llu root %llu\n",
>                               (unsigned long long)bytenr,
>                               (unsigned long long)parent,
>                               (unsigned long long)root);
> @@ -4530,9 +4529,8 @@ static int add_data_backref(struct cache_tree 
> *extent_cache, u64 bytenr,
>               rec->owner_ref_checked = 1;
>       } else {
>               if (back->node.found_extent_tree) {
> -                     fprintf(stderr, "Extent back ref already exists "
> -                             "for %llu parent %llu root %llu "
> -                             "owner %llu offset %llu num_refs %lu\n",
> +                     fprintf(stderr,
> +"Extent back ref already exists for %llu parent %llu root %llu owner %llu 
> offset %llu num_refs %lu\n",
>                               (unsigned long long)bytenr,
>                               (unsigned long long)parent,
>                               (unsigned long long)root,
> @@ -4555,6 +4553,7 @@ static int add_pending(struct cache_tree *pending,
>                      struct cache_tree *seen, u64 bytenr, u32 size)
>  {
>       int ret;
> +
>       ret = add_cache_extent(seen, bytenr, size);
>       if (ret)
>               return ret;
> @@ -4588,17 +4587,17 @@ static int pick_next_pending(struct cache_tree 
> *pending,
>               cache = search_cache_extent(nodes, 0);
>  
>       if (!cache) {
> -              cache = search_cache_extent(pending, 0);
> -              if (!cache)
> -                      return 0;
> -              ret = 0;
> -              do {
> -                      bits[ret].start = cache->start;
> -                      bits[ret].size = cache->size;
> -                      cache = next_cache_extent(cache);
> -                      ret++;
> -              } while (cache && ret < bits_nr);
> -              return ret;
> +             cache = search_cache_extent(pending, 0);
> +             if (!cache)
> +                     return 0;
> +             ret = 0;
> +             do {
> +                     bits[ret].start = cache->start;
> +                     bits[ret].size = cache->size;
> +                     cache = next_cache_extent(cache);
> +                     ret++;
> +             } while (cache && ret < bits_nr);
> +             return ret;
>       }
>  
>       ret = 0;
> @@ -4612,8 +4611,9 @@ static int pick_next_pending(struct cache_tree *pending,
>       if (bits_nr - ret > 8) {
>               u64 lookup = bits[0].start + bits[0].size;
>               struct cache_extent *next;
> +
>               next = search_cache_extent(pending, lookup);
> -             while(next) {
> +             while (next) {
>                       if (next->start - lookup > 32768)
>                               break;
>                       bits[ret].start = next->start;
> @@ -5004,6 +5004,7 @@ static int process_extent_item(struct btrfs_root *root,
>       if (item_size < sizeof(*ei)) {
>  #ifdef BTRFS_COMPAT_EXTENT_TREE_V0
>               struct btrfs_extent_item_v0 *ei0;
> +
>               if (item_size != sizeof(*ei0)) {
>                       error(
>       "invalid extent item format: ITEM[%llu %u %llu] leaf: %llu slot: %d",
> @@ -5356,8 +5357,8 @@ static int check_space_cache(struct btrfs_root *root)
>  
>  static int check_extent_csums(struct btrfs_root *root, u64 bytenr,
>                       u64 num_bytes, unsigned long leaf_offset,
> -                     struct extent_buffer *eb) {
> -
> +                     struct extent_buffer *eb)
> +{
>       struct btrfs_fs_info *fs_info = root->fs_info;
>       u64 offset = 0;
>       u16 csum_size = btrfs_super_csum_size(fs_info->super_copy);
> @@ -5646,7 +5647,8 @@ skip_csum_check:
>  }
>  
>  static int is_dropped_key(struct btrfs_key *key,
> -                       struct btrfs_key *drop_key) {
> +                       struct btrfs_key *drop_key)
> +{
>       if (key->objectid < drop_key->objectid)
>               return 1;
>       else if (key->objectid == drop_key->objectid) {
> @@ -5823,7 +5825,7 @@ static int run_next_block(struct btrfs_root *root,
>               return 1;
>  
>       if (!reada_bits) {
> -             for(i = 0; i < nritems; i++) {
> +             for (i = 0; i < nritems; i++) {
>                       ret = add_cache_extent(reada, bits[i].start,
>                                              bits[i].size);
>                       if (ret == -EEXIST)
> @@ -5933,6 +5935,7 @@ static int run_next_block(struct btrfs_root *root,
>               btree_space_waste += btrfs_leaf_free_space(root, buf);
>               for (i = 0; i < nritems; i++) {
>                       struct btrfs_file_extent_item *fi;
> +
>                       btrfs_item_key_to_cpu(buf, &key, i);
>                       /*
>                        * Check key type against the leaf owner.
> @@ -6007,6 +6010,7 @@ static int run_next_block(struct btrfs_root *root,
>                       }
>                       if (key.type == BTRFS_EXTENT_DATA_REF_KEY) {
>                               struct btrfs_extent_data_ref *ref;
> +
>                               ref = btrfs_item_ptr(buf, i,
>                                               struct btrfs_extent_data_ref);
>                               add_data_backref(extent_cache,
> @@ -6021,6 +6025,7 @@ static int run_next_block(struct btrfs_root *root,
>                       }
>                       if (key.type == BTRFS_SHARED_DATA_REF_KEY) {
>                               struct btrfs_shared_data_ref *ref;
> +
>                               ref = btrfs_item_ptr(buf, i,
>                                               struct btrfs_shared_data_ref);
>                               add_data_backref(extent_cache,
> @@ -6058,9 +6063,9 @@ static int run_next_block(struct btrfs_root *root,
>  
>                       data_bytes_allocated +=
>                               btrfs_file_extent_disk_num_bytes(buf, fi);
> -                     if (data_bytes_allocated < root->fs_info->sectorsize) {
> +                     if (data_bytes_allocated < root->fs_info->sectorsize)
>                               abort();
> -                     }
> +
>                       data_bytes_referenced +=
>                               btrfs_file_extent_num_bytes(buf, fi);
>                       add_data_backref(extent_cache,
> @@ -6093,7 +6098,8 @@ static int run_next_block(struct btrfs_root *root,
>  
>                       memset(&tmpl, 0, sizeof(tmpl));
>                       btrfs_cpu_key_to_disk(&tmpl.parent_key, &key);
> -                     tmpl.parent_generation = btrfs_node_ptr_generation(buf, 
> i);
> +                     tmpl.parent_generation =
> +                             btrfs_node_ptr_generation(buf, i);
>                       tmpl.start = ptr;
>                       tmpl.nr = size;
>                       tmpl.refs = 1;
> @@ -6112,11 +6118,10 @@ static int run_next_block(struct btrfs_root *root,
>                               continue;
>                       }
>  
> -                     if (level > 1) {
> +                     if (level > 1)
>                               add_pending(nodes, seen, ptr, size);
> -                     } else {
> +                     else
>                               add_pending(pending, seen, ptr, size);
> -                     }
>               }
>               btree_space_waste += (BTRFS_NODEPTRS_PER_BLOCK(fs_info) -
>                                     nritems) * sizeof(struct btrfs_key_ptr);
> @@ -6188,6 +6193,7 @@ static int free_extent_hook(struct btrfs_trans_handle 
> *trans,
>       rec = container_of(cache, struct extent_record, cache);
>       if (is_data) {
>               struct data_backref *back;
> +
>               back = find_data_backref(rec, parent, root_objectid, owner,
>                                        offset, 1, bytenr, num_bytes);
>               if (!back)
> @@ -6213,6 +6219,7 @@ static int free_extent_hook(struct btrfs_trans_handle 
> *trans,
>               }
>       } else {
>               struct tree_backref *back;
> +
>               back = find_tree_backref(rec, parent, root_objectid);
>               if (!back)
>                       goto out;
> @@ -6252,7 +6259,7 @@ static int delete_extent_records(struct 
> btrfs_trans_handle *trans,
>       key.type = (u8)-1;
>       key.offset = (u64)-1;
>  
> -     while(1) {
> +     while (1) {
>               ret = btrfs_search_slot(trans, root->fs_info->extent_root,
>                                       &key, path, 0, 1);
>               if (ret < 0)
> @@ -6365,7 +6372,7 @@ static int record_extent(struct btrfs_trans_handle 
> *trans,
>                       btrfs_set_extent_flags(leaf, ei,
>                                              BTRFS_EXTENT_FLAG_DATA);
>               } else {
> -                     struct btrfs_disk_key copy_key;;
> +                     struct btrfs_disk_key copy_key;
>  
>                       bi = (struct btrfs_tree_block_info *)(ei + 1);
>                       memset_extent_buffer(leaf, 0, (unsigned long)bi,
> @@ -6379,8 +6386,8 @@ static int record_extent(struct btrfs_trans_handle 
> *trans,
>                       btrfs_set_tree_block_level(leaf, bi, rec->info_level);
>                       btrfs_set_tree_block_key(leaf, bi, &copy_key);
>  
> -                     btrfs_set_extent_flags(leaf, ei,
> -                                            BTRFS_EXTENT_FLAG_TREE_BLOCK | 
> flags);
> +                     btrfs_set_extent_flags(leaf, ei, flags |
> +                                            BTRFS_EXTENT_FLAG_TREE_BLOCK);
>               }
>  
>               btrfs_mark_buffer_dirty(leaf);
> @@ -6418,18 +6425,14 @@ static int record_extent(struct btrfs_trans_handle 
> *trans,
>                       if (ret)
>                               break;
>               }
> -             fprintf(stderr, "adding new data backref"
> -                             " on %llu %s %llu owner %llu"
> -                             " offset %llu found %d\n",
> -                             (unsigned long long)rec->start,
> -                             back->full_backref ?
> -                             "parent" : "root",
> -                             back->full_backref ?
> -                             (unsigned long long)parent :
> -                             (unsigned long long)dback->root,
> -                             (unsigned long long)dback->owner,
> -                             (unsigned long long)dback->offset,
> -                             dback->found_ref);
> +             fprintf(stderr,
> +"adding new data backref on %llu %s %llu owner %llu offset %llu found %d\n",
> +                     (unsigned long long)rec->start,
> +                     back->full_backref ? "parent" : "root",
> +                     back->full_backref ? (unsigned long long)parent :
> +                                          (unsigned long long)dback->root,
> +                     (unsigned long long)dback->owner,
> +                     (unsigned long long)dback->offset, dback->found_ref);
>       } else {
>               u64 parent;
>               struct tree_backref *tback;
> @@ -6443,8 +6446,8 @@ static int record_extent(struct btrfs_trans_handle 
> *trans,
>               ret = btrfs_inc_extent_ref(trans, info->extent_root,
>                                          rec->start, rec->max_size,
>                                          parent, tback->root, 0, 0);
> -             fprintf(stderr, "adding new tree backref on "
> -                     "start %llu len %llu parent %llu root %llu\n",
> +             fprintf(stderr,
> +"adding new tree backref on start %llu len %llu parent %llu root %llu\n",
>                       rec->start, rec->max_size, parent, tback->root);
>       }
>  fail:
> @@ -6587,9 +6590,9 @@ static int repair_ref(struct btrfs_fs_info *info, 
> struct btrfs_path *path,
>               goto out;
>       }
>       if (ret > 0) {
> -             fprintf(stderr, "Well that's odd, we just found this key "
> -                     "[%Lu, %u, %Lu]\n", key.objectid, key.type,
> -                     key.offset);
> +             fprintf(stderr,
> +             "Well that's odd, we just found this key [%Lu, %u, %Lu]\n",
> +                     key.objectid, key.type, key.offset);
>               ret = -EINVAL;
>               goto out;
>       }
> @@ -6599,10 +6602,8 @@ static int repair_ref(struct btrfs_fs_info *info, 
> struct btrfs_path *path,
>  
>       if (btrfs_file_extent_compression(leaf, fi) &&
>           dback->disk_bytenr != entry->bytenr) {
> -             fprintf(stderr, "Ref doesn't match the record start and is "
> -                     "compressed, please take a btrfs-image of this file "
> -                     "system and send it to a btrfs developer so they can "
> -                     "complete this functionality for bytenr %Lu\n",
> +             fprintf(stderr,
> +"Ref doesn't match the record start and is compressed, please take a 
> btrfs-image of this file system and send it to a btrfs developer so they can 
> complete this functionality for bytenr %Lu\n",
>                       dback->disk_bytenr);
>               ret = -EINVAL;
>               goto out;
> @@ -6618,9 +6619,8 @@ static int repair_ref(struct btrfs_fs_info *info, 
> struct btrfs_path *path,
>               if (dback->disk_bytenr + offset +
>                   btrfs_file_extent_num_bytes(leaf, fi) >
>                   entry->bytenr + entry->bytes) {
> -                     fprintf(stderr, "Ref is past the entry end, please "
> -                             "take a btrfs-image of this file system and "
> -                             "send it to a btrfs developer, ref %Lu\n",
> +                     fprintf(stderr,
> +"Ref is past the entry end, please take a btrfs-image of this file system 
> and send it to a btrfs developer, ref %Lu\n",
>                               dback->disk_bytenr);
>                       ret = -EINVAL;
>                       goto out;
> @@ -6633,9 +6633,8 @@ static int repair_ref(struct btrfs_fs_info *info, 
> struct btrfs_path *path,
>  
>               offset = btrfs_file_extent_offset(leaf, fi);
>               if (dback->disk_bytenr + offset < entry->bytenr) {
> -                     fprintf(stderr, "Ref is before the entry start, please"
> -                             " take a btrfs-image of this file system and "
> -                             "send it to a btrfs developer, ref %Lu\n",
> +                     fprintf(stderr,
> +"Ref is before the entry start, please take a btrfs-image of this file 
> system and send it to a btrfs developer, ref %Lu\n",
>                               dback->disk_bytenr);
>                       ret = -EINVAL;
>                       goto out;
> @@ -6741,8 +6740,9 @@ static int verify_backrefs(struct btrfs_fs_info *info, 
> struct btrfs_path *path,
>       if (nr_entries <= 1 && !mismatch)
>               goto out;
>  
> -     fprintf(stderr, "attempting to repair backref discrepency for bytenr "
> -             "%Lu\n", rec->start);
> +     fprintf(stderr,
> +             "attempting to repair backref discrepency for bytenr %Lu\n",
> +             rec->start);
>  
>       /*
>        * First we want to see if the backrefs can agree amongst themselves who
> @@ -6758,9 +6758,8 @@ static int verify_backrefs(struct btrfs_fs_info *info, 
> struct btrfs_path *path,
>       if (!best) {
>               entry = find_entry(&entries, rec->start, rec->nr);
>               if (!entry && (!broken_entries || !rec->found_rec)) {
> -                     fprintf(stderr, "Backrefs don't agree with each other "
> -                             "and extent record doesn't agree with anybody,"
> -                             " so we can't fix bytenr %Lu bytes %Lu\n",
> +                     fprintf(stderr,
> +"Backrefs don't agree with each other and extent record doesn't agree with 
> anybody, so we can't fix bytenr %Lu bytes %Lu\n",
>                               rec->start, rec->nr);
>                       ret = -EINVAL;
>                       goto out;
> @@ -6783,10 +6782,9 @@ static int verify_backrefs(struct btrfs_fs_info *info, 
> struct btrfs_path *path,
>               entry->count++;
>               best = find_most_right_entry(&entries);
>               if (!best) {
> -                     fprintf(stderr, "Backrefs and extent record evenly "
> -                             "split on who is right, this is going to "
> -                             "require user input to fix bytenr %Lu bytes "
> -                             "%Lu\n", rec->start, rec->nr);
> +                     fprintf(stderr,
> +"Backrefs and extent record evenly split on who is right, this is going to 
> require user input to fix bytenr %Lu bytes %Lu\n",
> +                             rec->start, rec->nr);
>                       ret = -EINVAL;
>                       goto out;
>               }
> @@ -6798,10 +6796,8 @@ static int verify_backrefs(struct btrfs_fs_info *info, 
> struct btrfs_path *path,
>        * deal with it properly here yet, so just bail out of that's the case.
>        */
>       if (best->bytenr != rec->start) {
> -             fprintf(stderr, "Extent start and backref starts don't match, "
> -                     "please use btrfs-image on this file system and send "
> -                     "it to a btrfs developer so they can make fsck fix "
> -                     "this particular case.  bytenr is %Lu, bytes is %Lu\n",
> +             fprintf(stderr,
> +"Extent start and backref starts don't match, please use btrfs-image on this 
> file system and send it to a btrfs developer so they can make fsck fix this 
> particular case.  bytenr is %Lu, bytes is %Lu\n",
>                       rec->start, rec->nr);
>               ret = -EINVAL;
>               goto out;
> @@ -6951,10 +6947,8 @@ static int delete_duplicate_records(struct btrfs_root 
> *root,
>                       continue;
>  
>               if (tmp->start + tmp->nr < good->start + good->nr) {
> -                     fprintf(stderr, "Ok we have overlapping extents that "
> -                             "aren't completely covered by each other, this "
> -                             "is going to require more careful thought.  "
> -                             "The extents are [%Lu-%Lu] and [%Lu-%Lu]\n",
> +                     fprintf(stderr,
> +"Ok we have overlapping extents that aren't completely covered by each 
> other, this is going to require more careful thought. The extents are 
> [%Lu-%Lu] and [%Lu-%Lu]\n",
>                               tmp->start, tmp->nr, good->start, good->nr);
>                       abort();
>               }
> @@ -6986,9 +6980,9 @@ static int delete_duplicate_records(struct btrfs_root 
> *root,
>  
>               /* Shouldn't happen but just in case */
>               if (tmp->metadata) {
> -                     fprintf(stderr, "Well this shouldn't happen, extent "
> -                             "record overlaps but is metadata? "
> -                             "[%Lu, %Lu]\n", tmp->start, tmp->nr);
> +                     fprintf(stderr,
> +"Well this shouldn't happen, extent record overlaps but is metadata? [%Lu, 
> %Lu]\n",
> +                             tmp->start, tmp->nr);
>                       abort();
>               }
>  
> @@ -7090,6 +7084,7 @@ static int find_possible_backrefs(struct btrfs_fs_info 
> *info,
>               cache = lookup_cache_extent(extent_cache, bytenr, 1);
>               if (cache) {
>                       struct extent_record *tmp;
> +
>                       tmp = container_of(cache, struct extent_record, cache);
>  
>                       /*
> @@ -7271,7 +7266,8 @@ static int fixup_extent_refs(struct btrfs_fs_info *info,
>                       continue;
>  
>               rec->bad_full_backref = 0;
> -             ret = record_extent(trans, info, &path, rec, back, allocated, 
> flags);
> +             ret = record_extent(trans, info, &path, rec, back, allocated,
> +                                 flags);
>               allocated = 1;
>  
>               if (ret)
> @@ -7280,6 +7276,7 @@ static int fixup_extent_refs(struct btrfs_fs_info *info,
>  out:
>       if (trans) {
>               int err = btrfs_commit_transaction(trans, info->extent_root);
> +
>               if (!ret)
>                       ret = err;
>       }
> @@ -7401,8 +7398,8 @@ again:
>                       goto del_ptr;
>       }
>       /*
> -      * we couldn't find the bad block.  TODO, search all the nodes for 
> pointers
> -      * to this block
> +      * we couldn't find the bad block.
> +      * TODO: search all the nodes for pointers to this block
>        */
>       if (eb == info->extent_root->node) {
>               ret = -ENOENT;
> @@ -7437,7 +7434,8 @@ static int prune_corrupt_blocks(struct btrfs_fs_info 
> *info)
>                       if (IS_ERR(trans))
>                               return PTR_ERR(trans);
>               }
> -             corrupt = container_of(cache, struct btrfs_corrupt_block, 
> cache);
> +             corrupt = container_of(cache, struct btrfs_corrupt_block,
> +                                    cache);
>               prune_one_block(trans, info, corrupt);
>               remove_cache_extent(info->corrupt_blocks, cache);
>       }
> @@ -7463,7 +7461,7 @@ static int check_extent_refs(struct btrfs_root *root,
>                * extents in the FS
>                */
>               cache = search_cache_extent(extent_cache, 0);
> -             while(cache) {
> +             while (cache) {
>                       rec = container_of(cache, struct extent_record, cache);
>                       set_extent_dirty(root->fs_info->excluded_extents,
>                                        rec->start,
> @@ -7473,7 +7471,7 @@ static int check_extent_refs(struct btrfs_root *root,
>  
>               /* pin down all the corrupted blocks too */
>               cache = search_cache_extent(root->fs_info->corrupt_blocks, 0);
> -             while(cache) {
> +             while (cache) {
>                       set_extent_dirty(root->fs_info->excluded_extents,
>                                        cache->start,
>                                        cache->start + cache->size - 1);
> @@ -7518,7 +7516,7 @@ static int check_extent_refs(struct btrfs_root *root,
>       if (had_dups)
>               return -EAGAIN;
>  
> -     while(1) {
> +     while (1) {
>               int cur_err = 0;
>               int fix = 0;
>  
> @@ -7527,8 +7525,9 @@ static int check_extent_refs(struct btrfs_root *root,
>                       break;
>               rec = container_of(cache, struct extent_record, cache);
>               if (rec->num_duplicates) {
> -                     fprintf(stderr, "extent item %llu has multiple extent "
> -                             "items\n", (unsigned long long)rec->start);
> +                     fprintf(stderr,
> +                             "extent item %llu has multiple extent items\n",
> +                             (unsigned long long)rec->start);
>                       cur_err = 1;
>               }
>  
> @@ -7561,7 +7560,8 @@ static int check_extent_refs(struct btrfs_root *root,
>               }
>  
>               if (repair && fix) {
> -                     ret = fixup_extent_refs(root->fs_info, extent_cache, 
> rec);
> +                     ret = fixup_extent_refs(root->fs_info, extent_cache,
> +                                             rec);
>                       if (ret)
>                               goto repair_abort;
>               }
> @@ -7943,8 +7943,8 @@ static int add_root_item_to_list(struct list_head *head,
>                                 u8 level, u8 drop_level,
>                                 struct btrfs_key *drop_key)
>  {
> -
>       struct root_item_record *ri_rec;
> +
>       ri_rec = malloc(sizeof(*ri_rec));
>       if (!ri_rec)
>               return -ENOMEM;
> @@ -7992,6 +7992,7 @@ static int deal_root_from_list(struct list_head *list,
>       while (!list_empty(list)) {
>               struct root_item_record *rec;
>               struct extent_buffer *buf;
> +
>               rec = list_entry(list->next,
>                                struct root_item_record, list);
>               last = 0;
> @@ -8123,7 +8124,7 @@ again:
>       ret = btrfs_search_slot(NULL, fs_info->tree_root, &key, &path, 0, 0);
>       if (ret < 0)
>               goto out;
> -     while(1) {
> +     while (1) {
>               leaf = path.nodes[0];
>               slot = path.slots[0];
>               if (slot >= btrfs_header_nritems(path.nodes[0])) {
> 
--
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