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Fix dmu_tx_dirty_throttle after initial arc_c reduction. #11178

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Nov 10, 2020
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Fix dmu_tx_dirty_throttle after initial arc_c reduction. #11178

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10 changes: 5 additions & 5 deletions module/zfs/arc.c
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Original file line number Diff line number Diff line change
Expand Up @@ -7212,19 +7212,19 @@ arc_tempreserve_space(spa_t *spa, uint64_t reserve, uint64_t txg)
*/
uint64_t total_dirty = reserve + arc_tempreserve + anon_size;
uint64_t spa_dirty_anon = spa_dirty_data(spa);

if (total_dirty > arc_c * zfs_arc_dirty_limit_percent / 100 &&
anon_size > arc_c * zfs_arc_anon_limit_percent / 100 &&
uint64_t rarc_c = arc_warm ? arc_c : arc_c_max;
if (total_dirty > rarc_c * zfs_arc_dirty_limit_percent / 100 &&
anon_size > rarc_c * zfs_arc_anon_limit_percent / 100 &&
spa_dirty_anon > anon_size * zfs_arc_pool_dirty_percent / 100) {
#ifdef ZFS_DEBUG
uint64_t meta_esize = zfs_refcount_count(
&arc_anon->arcs_esize[ARC_BUFC_METADATA]);
uint64_t data_esize =
zfs_refcount_count(&arc_anon->arcs_esize[ARC_BUFC_DATA]);
dprintf("failing, arc_tempreserve=%lluK anon_meta=%lluK "
"anon_data=%lluK tempreserve=%lluK arc_c=%lluK\n",
"anon_data=%lluK tempreserve=%lluK rarc_c=%lluK\n",
arc_tempreserve >> 10, meta_esize >> 10,
data_esize >> 10, reserve >> 10, arc_c >> 10);
data_esize >> 10, reserve >> 10, rarc_c >> 10);
#endif
DMU_TX_STAT_BUMP(dmu_tx_dirty_throttle);
return (SET_ERROR(ERESTART));
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