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Rebase master to b117

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This commit is contained in:
Brian Behlendorf
2009-07-02 15:44:48 -07:00
parent d164b20935
commit 9babb37438
103 changed files with 7629 additions and 4093 deletions
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module/zfs/dnode_sync.c
+16 -6
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@@ -504,9 +504,6 @@ dnode_sync_free(dnode_t *dn, dmu_tx_t *tx)
/*
* Write out the dnode's dirty buffers.
*
* NOTE: The dnode is kept in memory by being dirty. Once the
* dirty bit is cleared, it may be evicted. Beware of this!
*/
void
dnode_sync(dnode_t *dn, dmu_tx_t *tx)
@@ -515,20 +512,33 @@ dnode_sync(dnode_t *dn, dmu_tx_t *tx)
dnode_phys_t *dnp = dn->dn_phys;
int txgoff = tx->tx_txg & TXG_MASK;
list_t *list = &dn->dn_dirty_records[txgoff];
static const dnode_phys_t zerodn = { 0 };
ASSERT(dmu_tx_is_syncing(tx));
ASSERT(dnp->dn_type != DMU_OT_NONE || dn->dn_allocated_txg);
ASSERT(dnp->dn_type != DMU_OT_NONE ||
bcmp(dnp, &zerodn, DNODE_SIZE) == 0);
DNODE_VERIFY(dn);
ASSERT(dn->dn_dbuf == NULL || arc_released(dn->dn_dbuf->db_buf));
if (dmu_objset_userused_enabled(dn->dn_objset) &&
!DMU_OBJECT_IS_SPECIAL(dn->dn_object)) {
ASSERT(dn->dn_oldphys == NULL);
dn->dn_oldphys = zio_buf_alloc(sizeof (dnode_phys_t));
*dn->dn_oldphys = *dn->dn_phys; /* struct assignment */
dn->dn_phys->dn_flags |= DNODE_FLAG_USERUSED_ACCOUNTED;
} else {
/* Once we account for it, we should always account for it. */
ASSERT(!(dn->dn_phys->dn_flags &
DNODE_FLAG_USERUSED_ACCOUNTED));
}
mutex_enter(&dn->dn_mtx);
if (dn->dn_allocated_txg == tx->tx_txg) {
/* The dnode is newly allocated or reallocated */
if (dnp->dn_type == DMU_OT_NONE) {
/* this is a first alloc, not a realloc */
/* XXX shouldn't the phys already be zeroed? */
bzero(dnp, DNODE_CORE_SIZE);
dnp->dn_nlevels = 1;
dnp->dn_nblkptr = dn->dn_nblkptr;
}
@@ -626,7 +636,7 @@ dnode_sync(dnode_t *dn, dmu_tx_t *tx)
dbuf_sync_list(list, tx);
if (dn->dn_object != DMU_META_DNODE_OBJECT) {
if (!DMU_OBJECT_IS_SPECIAL(dn->dn_object)) {
ASSERT3P(list_head(list), ==, NULL);
dnode_rele(dn, (void *)(uintptr_t)tx->tx_txg);
}