diff options
| -rw-r--r-- | fs/btrfs/space-info.c | 22 | ||||
| -rw-r--r-- | fs/btrfs/space-info.h | 1 |
2 files changed, 23 insertions, 0 deletions
diff --git a/fs/btrfs/space-info.c b/fs/btrfs/space-info.c index 227178f8b589..e46c0d6ae862 100644 --- a/fs/btrfs/space-info.c +++ b/fs/btrfs/space-info.c @@ -129,6 +129,15 @@ * churn a lot and we can avoid making some extent tree modifications if we * are able to delay for as long as possible. * + * RECLAIM_ZONES + * This state only works for the zoned mode. In zoned mode, we cannot reuse + * regions that have once been allocated and then been freed until we reset + * the zone, due to the sequential write requirement. The RECLAIM_ZONES state + * calls the reclaim machinery, evacuating the still valid data in these + * block-groups and relocates it to the data_reloc_bg. Afterwards these + * block-groups get deleted and the transaction is committed. This frees up + * space to use for new allocations. + * * RESET_ZONES * This state works only for the zoned mode. On the zoned mode, we cannot * reuse once allocated then freed region until we reset the zone, due to @@ -905,6 +914,18 @@ static void flush_space(struct btrfs_space_info *space_info, u64 num_bytes, if (ret > 0 || ret == -ENOSPC) ret = 0; break; + case RECLAIM_ZONES: + if (btrfs_is_zoned(fs_info)) { + btrfs_reclaim_sweep(fs_info); + btrfs_delete_unused_bgs(fs_info); + btrfs_reclaim_bgs(fs_info); + flush_work(&fs_info->reclaim_bgs_work); + ASSERT(current->journal_info == NULL); + ret = btrfs_commit_current_transaction(root); + } else { + ret = 0; + } + break; case RUN_DELAYED_IPUTS: /* * If we have pending delayed iputs then we could free up a @@ -1403,6 +1424,7 @@ static const enum btrfs_flush_state data_flush_states[] = { FLUSH_DELALLOC_FULL, RUN_DELAYED_IPUTS, COMMIT_TRANS, + RECLAIM_ZONES, RESET_ZONES, ALLOC_CHUNK_FORCE, }; diff --git a/fs/btrfs/space-info.h b/fs/btrfs/space-info.h index 6f96cf48d7da..174b1ecf63be 100644 --- a/fs/btrfs/space-info.h +++ b/fs/btrfs/space-info.h @@ -113,6 +113,7 @@ enum btrfs_flush_state { RUN_DELAYED_IPUTS = 10, COMMIT_TRANS = 11, RESET_ZONES = 12, + RECLAIM_ZONES = 13, }; enum btrfs_space_info_sub_group { |