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Update to onnv_147

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This is the last official OpenSolaris tag before the public
development tree was closed.
This commit is contained in:
Brian Behlendorf
2010-08-26 14:24:34 -07:00
parent 1980602bfa
commit 572e285762
101 changed files with 7835 additions and 2448 deletions
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module/zfs/ddt.c
+17 -11
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@@ -36,6 +36,11 @@
#include <sys/zio_compress.h>
#include <sys/dsl_scan.h>
/*
* Enable/disable prefetching of dedup-ed blocks which are going to be freed.
*/
int zfs_dedup_prefetch = 1;
static const ddt_ops_t *ddt_ops[DDT_TYPES] = {
&ddt_zap_ops,
};
@@ -456,9 +461,6 @@ ddt_get_dedup_object_stats(spa_t *spa, ddt_object_t *ddo_total)
if (ddo_total->ddo_count != 0) {
ddo_total->ddo_dspace /= ddo_total->ddo_count;
ddo_total->ddo_mspace /= ddo_total->ddo_count;
} else {
ASSERT(ddo_total->ddo_dspace == 0);
ASSERT(ddo_total->ddo_mspace == 0);
}
}
@@ -730,13 +732,13 @@ ddt_prefetch(spa_t *spa, const blkptr_t *bp)
ddt_t *ddt;
ddt_entry_t dde;
if (!BP_GET_DEDUP(bp))
if (!zfs_dedup_prefetch || bp == NULL || !BP_GET_DEDUP(bp))
return;
/*
* We remove the DDT once it's empty and only prefetch dedup blocks
* when there are entries in the DDT. Thus no locking is required
* as the DDT can't disappear on us.
* We only remove the DDT once all tables are empty and only
* prefetch dedup blocks when there are entries in the DDT.
* Thus no locking is required as the DDT can't disappear on us.
*/
ddt = ddt_select(spa, bp);
ddt_key_fill(&dde.dde_key, bp);
@@ -1072,11 +1074,15 @@ ddt_sync_table(ddt_t *ddt, dmu_tx_t *tx, uint64_t txg)
}
for (enum ddt_type type = 0; type < DDT_TYPES; type++) {
uint64_t count = 0;
for (enum ddt_class class = 0; class < DDT_CLASSES; class++) {
if (!ddt_object_exists(ddt, type, class))
continue;
ddt_object_sync(ddt, type, class, tx);
if (ddt_object_count(ddt, type, class) == 0)
if (ddt_object_exists(ddt, type, class)) {
ddt_object_sync(ddt, type, class, tx);
count += ddt_object_count(ddt, type, class);
}
}
for (enum ddt_class class = 0; class < DDT_CLASSES; class++) {
if (count == 0 && ddt_object_exists(ddt, type, class))
ddt_object_destroy(ddt, type, class, tx);
}
}