diff options
Diffstat (limited to 'fs/btrfs/extent-tree.c')
| -rw-r--r-- | fs/btrfs/extent-tree.c | 22 |
1 files changed, 9 insertions, 13 deletions
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index 2a718727541c..cd79a5f4c643 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -2494,23 +2494,19 @@ static u64 get_alloc_profile_by_root(struct btrfs_root *root, int data) static u64 first_logical_byte(struct btrfs_fs_info *fs_info) { - struct btrfs_block_group *cache; - u64 bytenr; + struct rb_node *leftmost; + u64 bytenr = 0; spin_lock(&fs_info->block_group_cache_lock); - bytenr = fs_info->first_logical_byte; - spin_unlock(&fs_info->block_group_cache_lock); - - if (bytenr < (u64)-1) - return bytenr; - /* Get the block group with the lowest logical start address. */ - cache = btrfs_lookup_first_block_group(fs_info, 0); - if (!cache) - return 0; + leftmost = rb_first_cached(&fs_info->block_group_cache_tree); + if (leftmost) { + struct btrfs_block_group *bg; - bytenr = cache->start; - btrfs_put_block_group(cache); + bg = rb_entry(leftmost, struct btrfs_block_group, cache_node); + bytenr = bg->start; + } + spin_unlock(&fs_info->block_group_cache_lock); return bytenr; } |