diff options
Diffstat (limited to 'fs/btrfs/block-group.h')
| -rw-r--r-- | fs/btrfs/block-group.h | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/fs/btrfs/block-group.h b/fs/btrfs/block-group.h index 107bb557ca8d..04967ea7ba2c 100644 --- a/fs/btrfs/block-group.h +++ b/fs/btrfs/block-group.h @@ -129,8 +129,17 @@ struct btrfs_block_group { /* For read-only block groups */ struct list_head ro_list; + /* + * When non-zero it means the block group's logical address and its + * device extents can not be reused for future block group allocations + * until the counter goes down to 0. This is to prevent them from being + * reused while some task is still using the block group after it was + * deleted - we want to make sure they can only be reused for new block + * groups after that task is done with the deleted block group. + */ + atomic_t frozen; + /* For discard operations */ - atomic_t trimming; struct list_head discard_list; int discard_index; u64 discard_eligible_time; |