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Convert dbuf dirty record record list to a list_t

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Additionally pull in state machine comments about
upcoming async cow work.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Matt Ahrens <matt@delphix.com>
Signed-off-by: Matt Macy <mmacy@FreeBSD.org>
Closes #9902
This commit is contained in:
Matthew Macy
2020-02-05 11:07:19 -08:00
committed by GitHub
parent 741db5a346
commit cccbed9f98
6 changed files with 103 additions and 91 deletions
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module/zfs/dmu_objset.c
+2 -4
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@@ -2064,15 +2064,13 @@ dmu_objset_do_userquota_updates(objset_t *os, dmu_tx_t *tx)
static void *
dmu_objset_userquota_find_data(dmu_buf_impl_t *db, dmu_tx_t *tx)
{
dbuf_dirty_record_t *dr, **drp;
dbuf_dirty_record_t *dr;
void *data;
if (db->db_dirtycnt == 0)
return (db->db.db_data); /* Nothing is changing */
for (drp = &db->db_last_dirty; (dr = *drp) != NULL; drp = &dr->dr_next)
if (dr->dr_txg == tx->tx_txg)
break;
dr = dbuf_find_dirty_eq(db, tx->tx_txg);
if (dr == NULL) {
data = NULL;