X-Git-Url: https://git.camperquake.de/gitweb.cgi?a=blobdiff_plain;f=module%2Fzfs%2Fdmu_tx.c;h=fd714135a853329edb9297485a60afb8539cf312;hb=57b650b86f15793195f9bf2185e1161c7c67904d;hp=31c88c9d6307bc11356fb4a32ab2eab513006412;hpb=c99c90015ece64746e20b74245caca41d1dbefe1;p=zfs.git

diff --git a/module/zfs/dmu_tx.c b/module/zfs/dmu_tx.c
index 31c88c9..fd71413 100644
--- a/module/zfs/dmu_tx.c
+++ b/module/zfs/dmu_tx.c
@@ -773,12 +773,13 @@ void
 dmu_tx_hold_space(dmu_tx_t *tx, uint64_t space)
 {
 	dmu_tx_hold_t *txh;
+
 	ASSERT(tx->tx_txg == 0);
 
 	txh = dmu_tx_hold_object_impl(tx, tx->tx_objset,
 	    DMU_NEW_OBJECT, THT_SPACE, space, 0);
-
-	txh->txh_space_towrite += space;
+	if (txh)
+		txh->txh_space_towrite += space;
 }
 
 int
@@ -1089,12 +1090,15 @@ dmu_tx_unassign(dmu_tx_t *tx)
 int
 dmu_tx_assign(dmu_tx_t *tx, uint64_t txg_how)
 {
+	hrtime_t before, after;
 	int err;
 
 	ASSERT(tx->tx_txg == 0);
 	ASSERT(txg_how != 0);
 	ASSERT(!dsl_pool_sync_context(tx->tx_pool));
 
+	before = gethrtime();
+
 	while ((err = dmu_tx_try_assign(tx, txg_how)) != 0) {
 		dmu_tx_unassign(tx);
 
@@ -1106,6 +1110,11 @@ dmu_tx_assign(dmu_tx_t *tx, uint64_t txg_how)
 
 	txg_rele_to_quiesce(&tx->tx_txgh);
 
+	after = gethrtime();
+
+	dsl_pool_tx_assign_add_usecs(tx->tx_pool,
+	    (after - before) / NSEC_PER_USEC);
+
 	return (0);
 }
 
@@ -1312,6 +1321,8 @@ dmu_tx_hold_spill(dmu_tx_t *tx, uint64_t object)
 
 	txh = dmu_tx_hold_object_impl(tx, tx->tx_objset, object,
 	    THT_SPILL, 0, 0);
+	if (txh == NULL)
+		return;
 
 	dn = txh->txh_dnode;