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3741 zfs needs better comments
Submitted by:   Will Andrews <willa@spectralogic.com>
Submitted by:   Justin Gibbs <justing@spectralogic.com>
Submitted by:   Alan Somers <alans@spectralogic.com>
Reviewed by:    Matthew Ahrens <mahrens@delphix.com>

*** 1012,1021 **** --- 1012,1025 ---- if (tx->tx_txg == 0) return; txg_rele_to_quiesce(&tx->tx_txgh); + /* + * Walk the transaction's hold list, removing the hold on the + * associated dnode, and notifying waiters if the refcount drops to 0. + */ for (txh = list_head(&tx->tx_holds); txh != tx->tx_needassign_txh; txh = list_next(&tx->tx_holds, txh)) { dnode_t *dn = txh->txh_dnode; if (dn == NULL)
*** 1124,1133 **** --- 1128,1141 ---- { dmu_tx_hold_t *txh; ASSERT(tx->tx_txg != 0); + /* + * Go through the transaction's hold list and remove holds on + * associated dnodes, notifying waiters if no holds remain. + */ while (txh = list_head(&tx->tx_holds)) { dnode_t *dn = txh->txh_dnode; list_remove(&tx->tx_holds, txh); kmem_free(txh, sizeof (dmu_tx_hold_t));