diff options
| author | Brian Behlendorf <[email protected]> | 2012-03-20 16:00:17 -0700 |
|---|---|---|
| committer | Brian Behlendorf <[email protected]> | 2012-03-23 12:25:17 -0700 |
| commit | 1c5de20ae2511124613926e4f780572634818218 (patch) | |
| tree | 66e14fa7c95491068117fa977b7c3fd38dd4c315 /module/zfs/dmu_tx.c | |
| parent | 99ea23c583b272470a21e0ac7caa1f485f6b1125 (diff) | |
Add --enable-debug-dmu-tx configure option
Allow rigorous (and expensive) tx validation to be enabled/disabled
indepentantly from the standard zfs debugging. When enabled these
checks ensure that all txs are constructed properly and that a dbuf
is never dirtied without taking the correct tx hold.
This checking is particularly helpful when adding new dmu consumers
like Lustre. However, for established consumers such as the zpl
with no known outstanding tx construction problems this is just
overhead.
--enable-debug-dmu-tx - Enable/disable validation of each tx as
--disable-debug-dmu-tx it is constructed. By default validation
is disabled due to performance concerns.
Signed-off-by: Brian Behlendorf <[email protected]>
Diffstat (limited to 'module/zfs/dmu_tx.c')
| -rw-r--r-- | module/zfs/dmu_tx.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/module/zfs/dmu_tx.c b/module/zfs/dmu_tx.c index 5f333ab96..50207bdbb 100644 --- a/module/zfs/dmu_tx.c +++ b/module/zfs/dmu_tx.c @@ -68,7 +68,7 @@ dmu_tx_create_dd(dsl_dir_t *dd) offsetof(dmu_tx_hold_t, txh_node)); list_create(&tx->tx_callbacks, sizeof (dmu_tx_callback_t), offsetof(dmu_tx_callback_t, dcb_node)); -#ifdef ZFS_DEBUG +#ifdef DEBUG_DMU_TX refcount_create(&tx->tx_space_written); refcount_create(&tx->tx_space_freed); #endif @@ -141,7 +141,7 @@ dmu_tx_hold_object_impl(dmu_tx_t *tx, objset_t *os, uint64_t object, txh = kmem_zalloc(sizeof (dmu_tx_hold_t), KM_SLEEP); txh->txh_tx = tx; txh->txh_dnode = dn; -#ifdef ZFS_DEBUG +#ifdef DEBUG_DMU_TX txh->txh_type = type; txh->txh_arg1 = arg1; txh->txh_arg2 = arg2; @@ -798,7 +798,7 @@ dmu_tx_holds(dmu_tx_t *tx, uint64_t object) return (holds); } -#ifdef ZFS_DEBUG +#ifdef DEBUG_DMU_TX void dmu_tx_dirty_buf(dmu_tx_t *tx, dmu_buf_impl_t *db) { @@ -1004,7 +1004,7 @@ dmu_tx_try_assign(dmu_tx_t *tx, uint64_t txg_how) /* calculate memory footprint estimate */ memory = towrite + tooverwrite + tohold; -#ifdef ZFS_DEBUG +#ifdef DEBUG_DMU_TX /* * Add in 'tohold' to account for our dirty holds on this memory * XXX - the "fudge" factor is to account for skipped blocks that @@ -1130,7 +1130,7 @@ dmu_tx_wait(dmu_tx_t *tx) void dmu_tx_willuse_space(dmu_tx_t *tx, int64_t delta) { -#ifdef ZFS_DEBUG +#ifdef DEBUG_DMU_TX if (tx->tx_dir == NULL || delta == 0) return; @@ -1180,7 +1180,7 @@ dmu_tx_commit(dmu_tx_t *tx) list_destroy(&tx->tx_callbacks); list_destroy(&tx->tx_holds); -#ifdef ZFS_DEBUG +#ifdef DEBUG_DMU_TX dprintf("towrite=%llu written=%llu tofree=%llu freed=%llu\n", tx->tx_space_towrite, refcount_count(&tx->tx_space_written), tx->tx_space_tofree, refcount_count(&tx->tx_space_freed)); @@ -1216,7 +1216,7 @@ dmu_tx_abort(dmu_tx_t *tx) list_destroy(&tx->tx_callbacks); list_destroy(&tx->tx_holds); -#ifdef ZFS_DEBUG +#ifdef DEBUG_DMU_TX refcount_destroy_many(&tx->tx_space_written, refcount_count(&tx->tx_space_written)); refcount_destroy_many(&tx->tx_space_freed, |