diff options
Diffstat (limited to 'extent-tree.c')
| -rw-r--r-- | extent-tree.c | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/extent-tree.c b/extent-tree.c index e8545ef6..c24af6a0 100644 --- a/extent-tree.c +++ b/extent-tree.c @@ -3140,6 +3140,54 @@ error: return ret; } +static void account_super_bytes(struct btrfs_fs_info *fs_info, + struct btrfs_block_group_cache *cache) +{ + u64 bytenr; + u64 *logical; + int stripe_len; + int i, nr, ret; + + if (cache->key.objectid < BTRFS_SUPER_INFO_OFFSET) { + stripe_len = BTRFS_SUPER_INFO_OFFSET - cache->key.objectid; + cache->bytes_super += stripe_len; + } + + for (i = 0; i < BTRFS_SUPER_MIRROR_MAX; i++) { + bytenr = btrfs_sb_offset(i); + ret = btrfs_rmap_block(&fs_info->mapping_tree, + cache->key.objectid, bytenr, + 0, &logical, &nr, &stripe_len); + if (ret) + return; + + while (nr--) { + u64 start, len; + + if (logical[nr] > cache->key.objectid + + cache->key.offset) + continue; + + if (logical[nr] + stripe_len <= cache->key.objectid) + continue; + + start = logical[nr]; + if (start < cache->key.objectid) { + start = cache->key.objectid; + len = (logical[nr] + stripe_len) - start; + } else { + len = min_t(u64, stripe_len, + cache->key.objectid + + cache->key.offset - start); + } + + cache->bytes_super += len; + } + + kfree(logical); + } +} + int btrfs_read_block_groups(struct btrfs_root *root) { struct btrfs_path *path; @@ -3201,6 +3249,8 @@ int btrfs_read_block_groups(struct btrfs_root *root) if (btrfs_chunk_readonly(root, cache->key.objectid)) cache->ro = 1; + account_super_bytes(info, cache); + ret = update_space_info(info, cache->flags, found_key.offset, btrfs_block_group_used(&cache->item), &space_info); @@ -3242,6 +3292,7 @@ btrfs_add_block_group(struct btrfs_fs_info *fs_info, u64 bytes_used, u64 type, cache->flags = type; btrfs_set_block_group_flags(&cache->item, type); + account_super_bytes(fs_info, cache); ret = update_space_info(fs_info, cache->flags, size, bytes_used, &cache->space_info); BUG_ON(ret); |