void sa_update_user(sa_handle_t *newhdl, sa_handle_t *oldhdl) { (void) dmu_buf_update_user((dmu_buf_t *)newhdl->sa_bonus, oldhdl, newhdl, NULL, sa_evict); oldhdl->sa_bonus = NULL; }
void fzap_upgrade(zap_t *zap, dmu_tx_t *tx, zap_flags_t flags) { dmu_buf_t *db; zap_leaf_t *l; int i; zap_phys_t *zp; ASSERT(RW_WRITE_HELD(&zap->zap_rwlock)); zap->zap_ismicro = FALSE; (void) dmu_buf_update_user(zap->zap_dbuf, zap, zap, &zap->zap_f.zap_phys, zap_evict); mutex_init(&zap->zap_f.zap_num_entries_mtx, 0, 0, 0); zap->zap_f.zap_block_shift = highbit(zap->zap_dbuf->db_size) - 1; zp = zap->zap_f.zap_phys; /* * explicitly zero it since it might be coming from an * initialized microzap */ bzero(zap->zap_dbuf->db_data, zap->zap_dbuf->db_size); zp->zap_block_type = ZBT_HEADER; zp->zap_magic = ZAP_MAGIC; zp->zap_ptrtbl.zt_shift = ZAP_EMBEDDED_PTRTBL_SHIFT(zap); zp->zap_freeblk = 2; /* block 1 will be the first leaf */ zp->zap_num_leafs = 1; zp->zap_num_entries = 0; zp->zap_salt = zap->zap_salt; zp->zap_normflags = zap->zap_normflags; zp->zap_flags = flags; /* block 1 will be the first leaf */ for (i = 0; i < (1<<zp->zap_ptrtbl.zt_shift); i++) ZAP_EMBEDDED_PTRTBL_ENT(zap, i) = 1; /* * set up block 1 - the first leaf */ VERIFY(0 == dmu_buf_hold(zap->zap_objset, zap->zap_object, 1<<FZAP_BLOCK_SHIFT(zap), FTAG, &db, DMU_READ_NO_PREFETCH)); dmu_buf_will_dirty(db, tx); l = kmem_zalloc(sizeof (zap_leaf_t), KM_PUSHPAGE); l->l_dbuf = db; l->l_phys = db->db_data; zap_leaf_init(l, zp->zap_normflags != 0); kmem_free(l, sizeof (zap_leaf_t)); dmu_buf_rele(db, FTAG); }
void zfs_znode_dmu_fini(znode_t *zp) { dmu_buf_t *db = zp->z_dbuf; ASSERT(MUTEX_HELD(ZFS_OBJ_MUTEX(zp->z_zfsvfs, zp->z_id)) || zp->z_unlinked || RW_WRITE_HELD(&zp->z_zfsvfs->z_teardown_inactive_lock)); ASSERT(zp->z_dbuf != NULL); zp->z_dbuf = NULL; VERIFY(zp == dmu_buf_update_user(db, zp, NULL, NULL, NULL)); dmu_buf_rele(db, NULL); }
static void zfs_znode_move_impl(znode_t *ozp, znode_t *nzp) { vnode_t *vp; /* Copy fields. */ nzp->z_zfsvfs = ozp->z_zfsvfs; /* Swap vnodes. */ vp = nzp->z_vnode; nzp->z_vnode = ozp->z_vnode; ozp->z_vnode = vp; /* let destructor free the overwritten vnode */ ZTOV(ozp)->v_data = ozp; ZTOV(nzp)->v_data = nzp; nzp->z_id = ozp->z_id; ASSERT(ozp->z_dirlocks == NULL); /* znode not in use */ ASSERT(avl_numnodes(&ozp->z_range_avl) == 0); nzp->z_unlinked = ozp->z_unlinked; nzp->z_atime_dirty = ozp->z_atime_dirty; nzp->z_zn_prefetch = ozp->z_zn_prefetch; nzp->z_blksz = ozp->z_blksz; nzp->z_seq = ozp->z_seq; nzp->z_mapcnt = ozp->z_mapcnt; nzp->z_last_itx = ozp->z_last_itx; nzp->z_gen = ozp->z_gen; nzp->z_sync_cnt = ozp->z_sync_cnt; nzp->z_phys = ozp->z_phys; nzp->z_dbuf = ozp->z_dbuf; /* * Since this is just an idle znode and kmem is already dealing with * memory pressure, release any cached ACL. */ if (ozp->z_acl_cached) { zfs_acl_free(ozp->z_acl_cached); ozp->z_acl_cached = NULL; } /* Update back pointers. */ (void) dmu_buf_update_user(nzp->z_dbuf, ozp, nzp, &nzp->z_phys, znode_evict_error); /* * Invalidate the original znode by clearing fields that provide a * pointer back to the znode. Set the low bit of the vfs pointer to * ensure that zfs_znode_move() recognizes the znode as invalid in any * subsequent callback. */ ozp->z_dbuf = NULL; POINTER_INVALIDATE(&ozp->z_zfsvfs); }
void sa_handle_destroy(sa_handle_t *hdl) { mutex_enter(&hdl->sa_lock); (void) dmu_buf_update_user((dmu_buf_t *)hdl->sa_bonus, hdl, NULL, NULL, NULL); if (hdl->sa_bonus_tab) { sa_idx_tab_rele(hdl->sa_os, hdl->sa_bonus_tab); hdl->sa_bonus_tab = NULL; } if (hdl->sa_spill_tab) { sa_idx_tab_rele(hdl->sa_os, hdl->sa_spill_tab); hdl->sa_spill_tab = NULL; } dmu_buf_rele(hdl->sa_bonus, NULL); if (hdl->sa_spill) dmu_buf_rele((dmu_buf_t *)hdl->sa_spill, NULL); mutex_exit(&hdl->sa_lock); kmem_cache_free(sa_cache, hdl); }