* CDDL HEADER END
*/
/*
- * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
+ * Copyright 2009 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
rw_init(&dn->dn_struct_rwlock, NULL, RW_DEFAULT, NULL);
mutex_init(&dn->dn_mtx, NULL, MUTEX_DEFAULT, NULL);
mutex_init(&dn->dn_dbufs_mtx, NULL, MUTEX_DEFAULT, NULL);
+ cv_init(&dn->dn_notxholds, NULL, CV_DEFAULT, NULL);
+
refcount_create(&dn->dn_holds);
refcount_create(&dn->dn_tx_holds);
rw_destroy(&dn->dn_struct_rwlock);
mutex_destroy(&dn->dn_mtx);
mutex_destroy(&dn->dn_dbufs_mtx);
+ cv_destroy(&dn->dn_notxholds);
refcount_destroy(&dn->dn_holds);
refcount_destroy(&dn->dn_tx_holds);
}
if (dn->dn_phys->dn_type != DMU_OT_NONE)
ASSERT3U(dn->dn_phys->dn_nlevels, <=, dn->dn_nlevels);
- ASSERT(dn->dn_object == DMU_META_DNODE_OBJECT || dn->dn_dbuf != NULL);
+ ASSERT(DMU_OBJECT_IS_SPECIAL(dn->dn_object) || dn->dn_dbuf != NULL);
if (dn->dn_dbuf != NULL) {
ASSERT3P(dn->dn_phys, ==,
(dnode_phys_t *)dn->dn_dbuf->db.db_data +
list_insert_head(&os->os_dnodes, dn);
mutex_exit(&os->os_lock);
- arc_space_consume(sizeof (dnode_t));
+ arc_space_consume(sizeof (dnode_t), ARC_SPACE_OTHER);
return (dn);
}
}
ASSERT(NULL == list_head(&dn->dn_dbufs));
#endif
+ ASSERT(dn->dn_oldphys == NULL);
mutex_enter(&os->os_lock);
list_remove(&os->os_dnodes, dn);
dn->dn_bonus = NULL;
}
kmem_cache_free(dnode_cache, dn);
- arc_space_return(sizeof (dnode_t));
+ arc_space_return(sizeof (dnode_t), ARC_SPACE_OTHER);
}
void
dnode_reallocate(dnode_t *dn, dmu_object_type_t ot, int blocksize,
dmu_object_type_t bonustype, int bonuslen, dmu_tx_t *tx)
{
- int i, old_nblkptr;
- dmu_buf_impl_t *db = NULL;
+ int nblkptr;
ASSERT3U(blocksize, >=, SPA_MINBLOCKSIZE);
ASSERT3U(blocksize, <=, SPA_MAXBLOCKSIZE);
ASSERT3U(bonustype, <, DMU_OT_NUMTYPES);
ASSERT3U(bonuslen, <=, DN_MAX_BONUSLEN);
- for (i = 0; i < TXG_SIZE; i++)
- ASSERT(!list_link_active(&dn->dn_dirty_link[i]));
-
/* clean up any unreferenced dbufs */
dnode_evict_dbufs(dn);
- ASSERT3P(list_head(&dn->dn_dbufs), ==, NULL);
- /*
- * XXX I should really have a generation number to tell if we
- * need to do this...
- */
- if (blocksize != dn->dn_datablksz ||
- dn->dn_bonustype != bonustype || dn->dn_bonuslen != bonuslen) {
- /* free all old data */
- dnode_free_range(dn, 0, -1ULL, tx);
- }
-
- /* change blocksize */
rw_enter(&dn->dn_struct_rwlock, RW_WRITER);
- if (blocksize != dn->dn_datablksz &&
- (!BP_IS_HOLE(&dn->dn_phys->dn_blkptr[0]) ||
- list_head(&dn->dn_dbufs) != NULL)) {
- db = dbuf_hold(dn, 0, FTAG);
- dbuf_new_size(db, blocksize, tx);
- }
- dnode_setdblksz(dn, blocksize);
dnode_setdirty(dn, tx);
- dn->dn_next_bonuslen[tx->tx_txg&TXG_MASK] = bonuslen;
- dn->dn_next_blksz[tx->tx_txg&TXG_MASK] = blocksize;
+ if (dn->dn_datablksz != blocksize) {
+ /* change blocksize */
+ ASSERT(dn->dn_maxblkid == 0 &&
+ (BP_IS_HOLE(&dn->dn_phys->dn_blkptr[0]) ||
+ dnode_block_freed(dn, 0)));
+ dnode_setdblksz(dn, blocksize);
+ dn->dn_next_blksz[tx->tx_txg&TXG_MASK] = blocksize;
+ }
+ if (dn->dn_bonuslen != bonuslen)
+ dn->dn_next_bonuslen[tx->tx_txg&TXG_MASK] = bonuslen;
+ nblkptr = 1 + ((DN_MAX_BONUSLEN - bonuslen) >> SPA_BLKPTRSHIFT);
+ if (dn->dn_nblkptr != nblkptr)
+ dn->dn_next_nblkptr[tx->tx_txg&TXG_MASK] = nblkptr;
rw_exit(&dn->dn_struct_rwlock);
- if (db)
- dbuf_rele(db, FTAG);
/* change type */
dn->dn_type = ot;
/* change bonus size and type */
mutex_enter(&dn->dn_mtx);
- old_nblkptr = dn->dn_nblkptr;
dn->dn_bonustype = bonustype;
dn->dn_bonuslen = bonuslen;
- dn->dn_nblkptr = 1 + ((DN_MAX_BONUSLEN - bonuslen) >> SPA_BLKPTRSHIFT);
+ dn->dn_nblkptr = nblkptr;
dn->dn_checksum = ZIO_CHECKSUM_INHERIT;
dn->dn_compress = ZIO_COMPRESS_INHERIT;
ASSERT3U(dn->dn_nblkptr, <=, DN_MAX_NBLKPTR);
- /* XXX - for now, we can't make nblkptr smaller */
- ASSERT3U(dn->dn_nblkptr, >=, old_nblkptr);
-
- /* fix up the bonus db_size if dn_nblkptr has changed */
- if (dn->dn_bonus && dn->dn_bonuslen != old_nblkptr) {
+ /* fix up the bonus db_size */
+ if (dn->dn_bonus) {
dn->dn_bonus->db.db_size =
DN_MAX_BONUSLEN - (dn->dn_nblkptr-1) * sizeof (blkptr_t);
ASSERT(dn->dn_bonuslen <= dn->dn_bonus->db.db_size);
*/
ASSERT(spa_config_held(os->os_spa, SCL_ALL, RW_WRITER) == 0);
+ if (object == DMU_USERUSED_OBJECT || object == DMU_GROUPUSED_OBJECT) {
+ dn = (object == DMU_USERUSED_OBJECT) ?
+ os->os_userused_dnode : os->os_groupused_dnode;
+ if (dn == NULL)
+ return (ENOENT);
+ type = dn->dn_type;
+ if ((flag & DNODE_MUST_BE_ALLOCATED) && type == DMU_OT_NONE)
+ return (ENOENT);
+ if ((flag & DNODE_MUST_BE_FREE) && type != DMU_OT_NONE)
+ return (EEXIST);
+ DNODE_VERIFY(dn);
+ (void) refcount_add(&dn->dn_holds, tag);
+ *dnp = dn;
+ return (0);
+ }
+
if (object == 0 || object >= DN_MAX_OBJECT)
return (EINVAL);
type = dn->dn_type;
if (dn->dn_free_txg ||
((flag & DNODE_MUST_BE_ALLOCATED) && type == DMU_OT_NONE) ||
- ((flag & DNODE_MUST_BE_FREE) && type != DMU_OT_NONE)) {
+ ((flag & DNODE_MUST_BE_FREE) &&
+ (type != DMU_OT_NONE || dn->dn_oldphys))) {
mutex_exit(&dn->dn_mtx);
dbuf_rele(db, FTAG);
return (type == DMU_OT_NONE ? ENOENT : EEXIST);
objset_impl_t *os = dn->dn_objset;
uint64_t txg = tx->tx_txg;
- if (dn->dn_object == DMU_META_DNODE_OBJECT)
+ if (DMU_OBJECT_IS_SPECIAL(dn->dn_object)) {
+ dsl_dataset_dirty(os->os_dsl_dataset, tx);
return;
+ }
DNODE_VERIFY(dn);
if (dn->dn_free_txg)
return (TRUE);
- /*
- * If dn_datablkshift is not set, then there's only a single
- * block, in which case there will never be a free range so it
- * won't matter.
- */
range_tofind.fr_blkid = blkid;
mutex_enter(&dn->dn_mtx);
for (i = 0; i < TXG_SIZE; i++) {
dprintf("probing object %llu offset %llx level %d of %u\n",
dn->dn_object, *offset, lvl, dn->dn_phys->dn_nlevels);
- hole = flags & DNODE_FIND_HOLE;
+ hole = ((flags & DNODE_FIND_HOLE) != 0);
inc = (flags & DNODE_FIND_BACKWARDS) ? -1 : 1;
ASSERT(txg == 0 || !hole);
for (i = (*offset >> span) & (blkfill - 1);
i >= 0 && i < blkfill; i += inc) {
- boolean_t newcontents = B_TRUE;
- if (txg) {
- int j;
- newcontents = B_FALSE;
- for (j = 0; j < dnp[i].dn_nblkptr; j++) {
- if (dnp[i].dn_blkptr[j].blk_birth > txg)
- newcontents = B_TRUE;
- }
- }
- if (!dnp[i].dn_type == hole && newcontents)
+ if ((dnp[i].dn_type == DMU_OT_NONE) == hole)
break;
*offset += (1ULL << span) * inc;
}
git://git.camperquake.de / zfs.git / blobdiff