diff options
| -rw-r--r-- | fs/btrfs/relocation.c | 6 | ||||
| -rw-r--r-- | fs/btrfs/transaction.c | 24 | ||||
| -rw-r--r-- | fs/btrfs/transaction.h | 1 |
3 files changed, 28 insertions, 3 deletions
diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c index 0359eecac95d..a945374993f7 100644 --- a/fs/btrfs/relocation.c +++ b/fs/btrfs/relocation.c @@ -1383,6 +1383,7 @@ int btrfs_init_reloc_root(struct btrfs_trans_handle *trans, { struct btrfs_root *reloc_root; struct reloc_control *rc = root->fs_info->reloc_ctl; + struct btrfs_block_rsv *rsv; int clear_rsv = 0; int ret; @@ -1396,13 +1397,14 @@ int btrfs_init_reloc_root(struct btrfs_trans_handle *trans, root->root_key.objectid == BTRFS_TREE_RELOC_OBJECTID) return 0; - if (!trans->block_rsv) { + if (!trans->reloc_reserved) { + rsv = trans->block_rsv; trans->block_rsv = rc->block_rsv; clear_rsv = 1; } reloc_root = create_reloc_root(trans, root, root->root_key.objectid); if (clear_rsv) - trans->block_rsv = NULL; + trans->block_rsv = rsv; ret = __add_reloc_root(reloc_root); BUG_ON(ret < 0); diff --git a/fs/btrfs/transaction.c b/fs/btrfs/transaction.c index 134039fd59bb..a213bafe68ec 100644 --- a/fs/btrfs/transaction.c +++ b/fs/btrfs/transaction.c @@ -353,6 +353,17 @@ static int may_wait_transaction(struct btrfs_root *root, int type) return 0; } +static inline bool need_reserve_reloc_root(struct btrfs_root *root) +{ + if (!root->fs_info->reloc_ctl || + !root->ref_cows || + root->root_key.objectid == BTRFS_TREE_RELOC_OBJECTID || + root->reloc_root) + return false; + + return true; +} + static struct btrfs_trans_handle * start_transaction(struct btrfs_root *root, u64 num_items, unsigned int type, enum btrfs_reserve_flush_enum flush) @@ -360,8 +371,9 @@ start_transaction(struct btrfs_root *root, u64 num_items, unsigned int type, struct btrfs_trans_handle *h; struct btrfs_transaction *cur_trans; u64 num_bytes = 0; - int ret; u64 qgroup_reserved = 0; + bool reloc_reserved = false; + int ret; if (test_bit(BTRFS_FS_STATE_ERROR, &root->fs_info->fs_state)) return ERR_PTR(-EROFS); @@ -390,6 +402,14 @@ start_transaction(struct btrfs_root *root, u64 num_items, unsigned int type, } num_bytes = btrfs_calc_trans_metadata_size(root, num_items); + /* + * Do the reservation for the relocation root creation + */ + if (unlikely(need_reserve_reloc_root(root))) { + num_bytes += root->nodesize; + reloc_reserved = true; + } + ret = btrfs_block_rsv_add(root, &root->fs_info->trans_block_rsv, num_bytes, flush); @@ -451,6 +471,7 @@ again: h->delayed_ref_elem.seq = 0; h->type = type; h->allocating_chunk = false; + h->reloc_reserved = false; INIT_LIST_HEAD(&h->qgroup_ref_list); INIT_LIST_HEAD(&h->new_bgs); @@ -466,6 +487,7 @@ again: h->transid, num_bytes, 1); h->block_rsv = &root->fs_info->trans_block_rsv; h->bytes_reserved = num_bytes; + h->reloc_reserved = reloc_reserved; } h->qgroup_reserved = qgroup_reserved; diff --git a/fs/btrfs/transaction.h b/fs/btrfs/transaction.h index 306f88ae1de3..7657d115067d 100644 --- a/fs/btrfs/transaction.h +++ b/fs/btrfs/transaction.h @@ -92,6 +92,7 @@ struct btrfs_trans_handle { short aborted; short adding_csums; bool allocating_chunk; + bool reloc_reserved; unsigned int type; /* * this root is only needed to validate that the root passed to |