-static int __bch2_trans_mark_reflink_p(struct btree_trans *trans,
- struct bkey_s_c_reflink_p p,
- u64 *idx, unsigned flags)
-{
- struct bch_fs *c = trans->c;
- struct btree_iter iter;
- struct bkey_s_c k;
- struct bkey_i *n;
- __le64 *refcount;
- int add = !(flags & BTREE_TRIGGER_OVERWRITE) ? 1 : -1;
- char buf[200];
- int ret;
-
- bch2_trans_iter_init(trans, &iter, BTREE_ID_reflink, POS(0, *idx),
- BTREE_ITER_INTENT|
- BTREE_ITER_WITH_UPDATES);
- k = bch2_btree_iter_peek_slot(&iter);
- ret = bkey_err(k);
- if (ret)
- goto err;
-
- n = bch2_trans_kmalloc(trans, bkey_bytes(k.k));
- ret = PTR_ERR_OR_ZERO(n);
- if (ret)
- goto err;
-
- bkey_reassemble(n, k);
-
- refcount = bkey_refcount(n);
- if (!refcount) {
- bch2_bkey_val_to_text(&PBUF(buf), c, p.s_c);
- bch2_fs_inconsistent(c,
- "nonexistent indirect extent at %llu while marking\n %s",
- *idx, buf);
- ret = -EIO;
- goto err;
- }
-
- if (!*refcount && (flags & BTREE_TRIGGER_OVERWRITE)) {
- bch2_bkey_val_to_text(&PBUF(buf), c, p.s_c);
- bch2_fs_inconsistent(c,
- "indirect extent refcount underflow at %llu while marking\n %s",
- *idx, buf);
- ret = -EIO;
- goto err;
- }
-
- if (flags & BTREE_TRIGGER_INSERT) {
- struct bch_reflink_p *v = (struct bch_reflink_p *) p.v;
- u64 pad;
-
- pad = max_t(s64, le32_to_cpu(v->front_pad),
- le64_to_cpu(v->idx) - bkey_start_offset(k.k));
- BUG_ON(pad > U32_MAX);
- v->front_pad = cpu_to_le32(pad);
-
- pad = max_t(s64, le32_to_cpu(v->back_pad),
- k.k->p.offset - p.k->size - le64_to_cpu(v->idx));
- BUG_ON(pad > U32_MAX);
- v->back_pad = cpu_to_le32(pad);
- }
-
- le64_add_cpu(refcount, add);
-
- if (!*refcount) {
- n->k.type = KEY_TYPE_deleted;
- set_bkey_val_u64s(&n->k, 0);
- }
-
- bch2_btree_iter_set_pos_to_extent_start(&iter);
- ret = bch2_trans_update(trans, &iter, n, 0);
- if (ret)
- goto err;
-
- *idx = k.k->p.offset;
-err:
- bch2_trans_iter_exit(trans, &iter);
- return ret;
-}
-
-static int bch2_trans_mark_reflink_p(struct btree_trans *trans,
- struct bkey_s_c k, unsigned flags)
-{
- struct bkey_s_c_reflink_p p = bkey_s_c_to_reflink_p(k);
- u64 idx, end_idx;
- int ret = 0;
-
- if (flags & BTREE_TRIGGER_INSERT) {
- struct bch_reflink_p *v = (struct bch_reflink_p *) p.v;
-
- v->front_pad = v->back_pad = 0;
- }
-
- idx = le64_to_cpu(p.v->idx) - le32_to_cpu(p.v->front_pad);
- end_idx = le64_to_cpu(p.v->idx) + p.k->size +
- le32_to_cpu(p.v->back_pad);
-
- while (idx < end_idx && !ret)
- ret = __bch2_trans_mark_reflink_p(trans, p, &idx, flags);
-
- return ret;
-}
-
-int bch2_trans_mark_key(struct btree_trans *trans, struct bkey_s_c old,
- struct bkey_s_c new, unsigned flags)
-{
- struct bkey_s_c k = flags & BTREE_TRIGGER_OVERWRITE ? old: new;
-
- switch (k.k->type) {
- case KEY_TYPE_btree_ptr:
- case KEY_TYPE_btree_ptr_v2:
- case KEY_TYPE_extent:
- case KEY_TYPE_reflink_v:
- return bch2_trans_mark_extent(trans, k, flags);
- case KEY_TYPE_stripe:
- return bch2_trans_mark_stripe(trans, old, new, flags);
- case KEY_TYPE_inode:
- case KEY_TYPE_inode_v2:
- return bch2_trans_mark_inode(trans, old, new, flags);
- case KEY_TYPE_reservation:
- return bch2_trans_mark_reservation(trans, k, flags);
- case KEY_TYPE_reflink_p:
- return bch2_trans_mark_reflink_p(trans, k, flags);
- default:
- return 0;
- }
-}
-
-int bch2_trans_mark_update(struct btree_trans *trans,
- struct btree_path *path,
- struct bkey_i *new,
- unsigned flags)