1fa9e4066Sahrens /* 2fa9e4066Sahrens * CDDL HEADER START 3fa9e4066Sahrens * 4fa9e4066Sahrens * The contents of this file are subject to the terms of the 5ea8dc4b6Seschrock * Common Development and Distribution License (the "License"). 6ea8dc4b6Seschrock * You may not use this file except in compliance with the License. 7fa9e4066Sahrens * 8fa9e4066Sahrens * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9fa9e4066Sahrens * or http://www.opensolaris.org/os/licensing. 10fa9e4066Sahrens * See the License for the specific language governing permissions 11fa9e4066Sahrens * and limitations under the License. 12fa9e4066Sahrens * 13fa9e4066Sahrens * When distributing Covered Code, include this CDDL HEADER in each 14fa9e4066Sahrens * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15fa9e4066Sahrens * If applicable, add the following below this CDDL HEADER, with the 16fa9e4066Sahrens * fields enclosed by brackets "[]" replaced with your own identifying 17fa9e4066Sahrens * information: Portions Copyright [yyyy] [name of copyright owner] 18fa9e4066Sahrens * 19fa9e4066Sahrens * CDDL HEADER END 20fa9e4066Sahrens */ 21ad135b5dSChristopher Siden 22fa9e4066Sahrens /* 2306e0070dSMark Shellenbaum * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. 248df0bcf0SPaul Dagnelie * Copyright (c) 2012, 2016 by Delphix. All rights reserved. 25bc9014e6SJustin Gibbs * Copyright (c) 2014 Spectra Logic Corporation, All rights reserved. 26fa9e4066Sahrens */ 27fa9e4066Sahrens 28fa9e4066Sahrens #include <sys/zfs_context.h> 29fa9e4066Sahrens #include <sys/dbuf.h> 30fa9e4066Sahrens #include <sys/dnode.h> 31fa9e4066Sahrens #include <sys/dmu.h> 32fa9e4066Sahrens #include <sys/dmu_tx.h> 33fa9e4066Sahrens #include <sys/dmu_objset.h> 34fa9e4066Sahrens #include <sys/dsl_dataset.h> 35fa9e4066Sahrens #include <sys/spa.h> 36bf16b11eSMatthew Ahrens #include <sys/range_tree.h> 3743466aaeSMax Grossman #include <sys/zfeature.h> 38fa9e4066Sahrens 39fa9e4066Sahrens static void 40fa9e4066Sahrens dnode_increase_indirection(dnode_t *dn, dmu_tx_t *tx) 41fa9e4066Sahrens { 42fa9e4066Sahrens dmu_buf_impl_t *db; 43c717a561Smaybee int txgoff = tx->tx_txg & TXG_MASK; 44c717a561Smaybee int nblkptr = dn->dn_phys->dn_nblkptr; 45c717a561Smaybee int old_toplvl = dn->dn_phys->dn_nlevels - 1; 46c717a561Smaybee int new_level = dn->dn_next_nlevels[txgoff]; 47fa9e4066Sahrens int i; 48fa9e4066Sahrens 49c717a561Smaybee rw_enter(&dn->dn_struct_rwlock, RW_WRITER); 50c717a561Smaybee 51c717a561Smaybee /* this dnode can't be paged out because it's dirty */ 52fa9e4066Sahrens ASSERT(dn->dn_phys->dn_type != DMU_OT_NONE); 53fa9e4066Sahrens ASSERT(RW_WRITE_HELD(&dn->dn_struct_rwlock)); 54c717a561Smaybee ASSERT(new_level > 1 && dn->dn_phys->dn_nlevels > 0); 55fa9e4066Sahrens 56fa9e4066Sahrens db = dbuf_hold_level(dn, dn->dn_phys->dn_nlevels, 0, FTAG); 57ea8dc4b6Seschrock ASSERT(db != NULL); 58c717a561Smaybee 59c717a561Smaybee dn->dn_phys->dn_nlevels = new_level; 60f82bfe17Sgw dprintf("os=%p obj=%llu, increase to %d\n", dn->dn_objset, 61f82bfe17Sgw dn->dn_object, dn->dn_phys->dn_nlevels); 62c717a561Smaybee 638df0bcf0SPaul Dagnelie /* transfer dnode's block pointers to new indirect block */ 648df0bcf0SPaul Dagnelie (void) dbuf_read(db, NULL, DB_RF_MUST_SUCCEED|DB_RF_HAVESTRUCT); 658df0bcf0SPaul Dagnelie ASSERT(db->db.db_data); 668df0bcf0SPaul Dagnelie ASSERT(arc_released(db->db_buf)); 678df0bcf0SPaul Dagnelie ASSERT3U(sizeof (blkptr_t) * nblkptr, <=, db->db.db_size); 688df0bcf0SPaul Dagnelie bcopy(dn->dn_phys->dn_blkptr, db->db.db_data, 698df0bcf0SPaul Dagnelie sizeof (blkptr_t) * nblkptr); 708df0bcf0SPaul Dagnelie arc_buf_freeze(db->db_buf); 71fa9e4066Sahrens 72fa9e4066Sahrens /* set dbuf's parent pointers to new indirect buf */ 73c717a561Smaybee for (i = 0; i < nblkptr; i++) { 74e57a022bSJustin T. Gibbs dmu_buf_impl_t *child = 75e57a022bSJustin T. Gibbs dbuf_find(dn->dn_objset, dn->dn_object, old_toplvl, i); 76c717a561Smaybee 77fa9e4066Sahrens if (child == NULL) 78fa9e4066Sahrens continue; 79744947dcSTom Erickson #ifdef DEBUG 80744947dcSTom Erickson DB_DNODE_ENTER(child); 81744947dcSTom Erickson ASSERT3P(DB_DNODE(child), ==, dn); 82744947dcSTom Erickson DB_DNODE_EXIT(child); 83744947dcSTom Erickson #endif /* DEBUG */ 84c717a561Smaybee if (child->db_parent && child->db_parent != dn->dn_dbuf) { 85c717a561Smaybee ASSERT(child->db_parent->db_level == db->db_level); 86c717a561Smaybee ASSERT(child->db_blkptr != 87c717a561Smaybee &dn->dn_phys->dn_blkptr[child->db_blkid]); 88fa9e4066Sahrens mutex_exit(&child->db_mtx); 89fa9e4066Sahrens continue; 90fa9e4066Sahrens } 91c717a561Smaybee ASSERT(child->db_parent == NULL || 92c717a561Smaybee child->db_parent == dn->dn_dbuf); 93c717a561Smaybee 94c717a561Smaybee child->db_parent = db; 95c717a561Smaybee dbuf_add_ref(db, child); 96c717a561Smaybee if (db->db.db_data) 97c717a561Smaybee child->db_blkptr = (blkptr_t *)db->db.db_data + i; 98c717a561Smaybee else 99c717a561Smaybee child->db_blkptr = NULL; 100c717a561Smaybee dprintf_dbuf_bp(child, child->db_blkptr, 101c717a561Smaybee "changed db_blkptr to new indirect %s", ""); 102fa9e4066Sahrens 103fa9e4066Sahrens mutex_exit(&child->db_mtx); 104fa9e4066Sahrens } 105fa9e4066Sahrens 106c717a561Smaybee bzero(dn->dn_phys->dn_blkptr, sizeof (blkptr_t) * nblkptr); 107fa9e4066Sahrens 108ea8dc4b6Seschrock dbuf_rele(db, FTAG); 109c717a561Smaybee 110c717a561Smaybee rw_exit(&dn->dn_struct_rwlock); 111fa9e4066Sahrens } 112fa9e4066Sahrens 11343466aaeSMax Grossman static void 114fa9e4066Sahrens free_blocks(dnode_t *dn, blkptr_t *bp, int num, dmu_tx_t *tx) 115fa9e4066Sahrens { 116cdb0ab79Smaybee dsl_dataset_t *ds = dn->dn_objset->os_dsl_dataset; 117fa9e4066Sahrens uint64_t bytesfreed = 0; 118fa9e4066Sahrens 119cdb0ab79Smaybee dprintf("ds=%p obj=%llx num=%d\n", ds, dn->dn_object, num); 120fa9e4066Sahrens 12143466aaeSMax Grossman for (int i = 0; i < num; i++, bp++) { 122fa9e4066Sahrens if (BP_IS_HOLE(bp)) 123fa9e4066Sahrens continue; 124fa9e4066Sahrens 125b24ab676SJeff Bonwick bytesfreed += dsl_dataset_block_kill(ds, bp, tx, B_FALSE); 12699653d4eSeschrock ASSERT3U(bytesfreed, <=, DN_USED_BYTES(dn->dn_phys)); 12743466aaeSMax Grossman 12843466aaeSMax Grossman /* 12943466aaeSMax Grossman * Save some useful information on the holes being 13043466aaeSMax Grossman * punched, including logical size, type, and indirection 13143466aaeSMax Grossman * level. Retaining birth time enables detection of when 13243466aaeSMax Grossman * holes are punched for reducing the number of free 13343466aaeSMax Grossman * records transmitted during a zfs send. 13443466aaeSMax Grossman */ 13543466aaeSMax Grossman 13643466aaeSMax Grossman uint64_t lsize = BP_GET_LSIZE(bp); 13743466aaeSMax Grossman dmu_object_type_t type = BP_GET_TYPE(bp); 13843466aaeSMax Grossman uint64_t lvl = BP_GET_LEVEL(bp); 13943466aaeSMax Grossman 140c717a561Smaybee bzero(bp, sizeof (blkptr_t)); 14143466aaeSMax Grossman 14243466aaeSMax Grossman if (spa_feature_is_active(dn->dn_objset->os_spa, 14343466aaeSMax Grossman SPA_FEATURE_HOLE_BIRTH)) { 14443466aaeSMax Grossman BP_SET_LSIZE(bp, lsize); 14543466aaeSMax Grossman BP_SET_TYPE(bp, type); 14643466aaeSMax Grossman BP_SET_LEVEL(bp, lvl); 14743466aaeSMax Grossman BP_SET_BIRTH(bp, dmu_tx_get_txg(tx), 0); 14843466aaeSMax Grossman } 149fa9e4066Sahrens } 150fa9e4066Sahrens dnode_diduse_space(dn, -bytesfreed); 151fa9e4066Sahrens } 152fa9e4066Sahrens 1539c9dc39aSek #ifdef ZFS_DEBUG 154fa9e4066Sahrens static void 155fa9e4066Sahrens free_verify(dmu_buf_impl_t *db, uint64_t start, uint64_t end, dmu_tx_t *tx) 156fa9e4066Sahrens { 157fa9e4066Sahrens int off, num; 158fa9e4066Sahrens int i, err, epbs; 159fa9e4066Sahrens uint64_t txg = tx->tx_txg; 160744947dcSTom Erickson dnode_t *dn; 161fa9e4066Sahrens 162744947dcSTom Erickson DB_DNODE_ENTER(db); 163744947dcSTom Erickson dn = DB_DNODE(db); 164744947dcSTom Erickson epbs = dn->dn_phys->dn_indblkshift - SPA_BLKPTRSHIFT; 165fa9e4066Sahrens off = start - (db->db_blkid * 1<<epbs); 166fa9e4066Sahrens num = end - start + 1; 167fa9e4066Sahrens 168fa9e4066Sahrens ASSERT3U(off, >=, 0); 169fa9e4066Sahrens ASSERT3U(num, >=, 0); 170fa9e4066Sahrens ASSERT3U(db->db_level, >, 0); 171744947dcSTom Erickson ASSERT3U(db->db.db_size, ==, 1 << dn->dn_phys->dn_indblkshift); 172fa9e4066Sahrens ASSERT3U(off+num, <=, db->db.db_size >> SPA_BLKPTRSHIFT); 173fa9e4066Sahrens ASSERT(db->db_blkptr != NULL); 174fa9e4066Sahrens 175fa9e4066Sahrens for (i = off; i < off+num; i++) { 176fa9e4066Sahrens uint64_t *buf; 177fa9e4066Sahrens dmu_buf_impl_t *child; 178c717a561Smaybee dbuf_dirty_record_t *dr; 179c717a561Smaybee int j; 180fa9e4066Sahrens 181fa9e4066Sahrens ASSERT(db->db_level == 1); 182fa9e4066Sahrens 183744947dcSTom Erickson rw_enter(&dn->dn_struct_rwlock, RW_READER); 184744947dcSTom Erickson err = dbuf_hold_impl(dn, db->db_level-1, 185a2cdcdd2SPaul Dagnelie (db->db_blkid << epbs) + i, TRUE, FALSE, FTAG, &child); 186744947dcSTom Erickson rw_exit(&dn->dn_struct_rwlock); 187fa9e4066Sahrens if (err == ENOENT) 188fa9e4066Sahrens continue; 189fa9e4066Sahrens ASSERT(err == 0); 190fa9e4066Sahrens ASSERT(child->db_level == 0); 191c717a561Smaybee dr = child->db_last_dirty; 192c717a561Smaybee while (dr && dr->dr_txg > txg) 193c717a561Smaybee dr = dr->dr_next; 194c717a561Smaybee ASSERT(dr == NULL || dr->dr_txg == txg); 195c717a561Smaybee 196c717a561Smaybee /* data_old better be zeroed */ 197c717a561Smaybee if (dr) { 198c717a561Smaybee buf = dr->dt.dl.dr_data->b_data; 199fa9e4066Sahrens for (j = 0; j < child->db.db_size >> 3; j++) { 200fa9e4066Sahrens if (buf[j] != 0) { 201fa9e4066Sahrens panic("freed data not zero: " 202fa9e4066Sahrens "child=%p i=%d off=%d num=%d\n", 203903a11ebSrh (void *)child, i, off, num); 204fa9e4066Sahrens } 205fa9e4066Sahrens } 206fa9e4066Sahrens } 207fa9e4066Sahrens 208fa9e4066Sahrens /* 209fa9e4066Sahrens * db_data better be zeroed unless it's dirty in a 210fa9e4066Sahrens * future txg. 211fa9e4066Sahrens */ 212fa9e4066Sahrens mutex_enter(&child->db_mtx); 213fa9e4066Sahrens buf = child->db.db_data; 214fa9e4066Sahrens if (buf != NULL && child->db_state != DB_FILL && 215c717a561Smaybee child->db_last_dirty == NULL) { 216fa9e4066Sahrens for (j = 0; j < child->db.db_size >> 3; j++) { 217fa9e4066Sahrens if (buf[j] != 0) { 218fa9e4066Sahrens panic("freed data not zero: " 219fa9e4066Sahrens "child=%p i=%d off=%d num=%d\n", 220903a11ebSrh (void *)child, i, off, num); 221fa9e4066Sahrens } 222fa9e4066Sahrens } 223fa9e4066Sahrens } 224fa9e4066Sahrens mutex_exit(&child->db_mtx); 225fa9e4066Sahrens 226ea8dc4b6Seschrock dbuf_rele(child, FTAG); 227fa9e4066Sahrens } 228744947dcSTom Erickson DB_DNODE_EXIT(db); 229fa9e4066Sahrens } 2309c9dc39aSek #endif 231fa9e4066Sahrens 23243466aaeSMax Grossman static void 23343466aaeSMax Grossman free_children(dmu_buf_impl_t *db, uint64_t blkid, uint64_t nblks, 234fa9e4066Sahrens dmu_tx_t *tx) 235fa9e4066Sahrens { 236744947dcSTom Erickson dnode_t *dn; 237fa9e4066Sahrens blkptr_t *bp; 238fa9e4066Sahrens dmu_buf_impl_t *subdb; 239fa9e4066Sahrens uint64_t start, end, dbstart, dbend, i; 24043466aaeSMax Grossman int epbs, shift; 241cdb0ab79Smaybee 242cdb0ab79Smaybee /* 243cdb0ab79Smaybee * There is a small possibility that this block will not be cached: 244cdb0ab79Smaybee * 1 - if level > 1 and there are no children with level <= 1 24543466aaeSMax Grossman * 2 - if this block was evicted since we read it from 24643466aaeSMax Grossman * dmu_tx_hold_free(). 247cdb0ab79Smaybee */ 248cdb0ab79Smaybee if (db->db_state != DB_CACHED) 249cdb0ab79Smaybee (void) dbuf_read(db, NULL, DB_RF_MUST_SUCCEED); 250fa9e4066Sahrens 2513f9d6ad7SLin Ling dbuf_release_bp(db); 25243466aaeSMax Grossman bp = db->db.db_data; 253fa9e4066Sahrens 254744947dcSTom Erickson DB_DNODE_ENTER(db); 255744947dcSTom Erickson dn = DB_DNODE(db); 256744947dcSTom Erickson epbs = dn->dn_phys->dn_indblkshift - SPA_BLKPTRSHIFT; 257fa9e4066Sahrens shift = (db->db_level - 1) * epbs; 258fa9e4066Sahrens dbstart = db->db_blkid << epbs; 259fa9e4066Sahrens start = blkid >> shift; 260fa9e4066Sahrens if (dbstart < start) { 261fa9e4066Sahrens bp += start - dbstart; 262fa9e4066Sahrens } else { 263fa9e4066Sahrens start = dbstart; 264fa9e4066Sahrens } 265fa9e4066Sahrens dbend = ((db->db_blkid + 1) << epbs) - 1; 266fa9e4066Sahrens end = (blkid + nblks - 1) >> shift; 267fa9e4066Sahrens if (dbend <= end) 268fa9e4066Sahrens end = dbend; 26943466aaeSMax Grossman 270fa9e4066Sahrens ASSERT3U(start, <=, end); 271fa9e4066Sahrens 272fa9e4066Sahrens if (db->db_level == 1) { 2739c9dc39aSek FREE_VERIFY(db, start, end, tx); 27443466aaeSMax Grossman free_blocks(dn, bp, end-start+1, tx); 27543466aaeSMax Grossman } else { 27643466aaeSMax Grossman for (i = start; i <= end; i++, bp++) { 27743466aaeSMax Grossman if (BP_IS_HOLE(bp)) 27843466aaeSMax Grossman continue; 27943466aaeSMax Grossman rw_enter(&dn->dn_struct_rwlock, RW_READER); 28043466aaeSMax Grossman VERIFY0(dbuf_hold_impl(dn, db->db_level - 1, 281a2cdcdd2SPaul Dagnelie i, TRUE, FALSE, FTAG, &subdb)); 28243466aaeSMax Grossman rw_exit(&dn->dn_struct_rwlock); 28343466aaeSMax Grossman ASSERT3P(bp, ==, subdb->db_blkptr); 28443466aaeSMax Grossman 28543466aaeSMax Grossman free_children(subdb, blkid, nblks, tx); 28643466aaeSMax Grossman dbuf_rele(subdb, FTAG); 28743466aaeSMax Grossman } 288fa9e4066Sahrens } 289fa9e4066Sahrens 29043466aaeSMax Grossman /* If this whole block is free, free ourself too. */ 29143466aaeSMax Grossman for (i = 0, bp = db->db.db_data; i < 1 << epbs; i++, bp++) { 29243466aaeSMax Grossman if (!BP_IS_HOLE(bp)) 29343466aaeSMax Grossman break; 29443466aaeSMax Grossman } 29543466aaeSMax Grossman if (i == 1 << epbs) { 29643466aaeSMax Grossman /* didn't find any non-holes */ 29743466aaeSMax Grossman bzero(db->db.db_data, db->db.db_size); 29843466aaeSMax Grossman free_blocks(dn, db->db_blkptr, 1, tx); 29943466aaeSMax Grossman } else { 30043466aaeSMax Grossman /* 30143466aaeSMax Grossman * Partial block free; must be marked dirty so that it 30243466aaeSMax Grossman * will be written out. 30343466aaeSMax Grossman */ 30443466aaeSMax Grossman ASSERT(db->db_dirtycnt > 0); 305fa9e4066Sahrens } 30643466aaeSMax Grossman 307744947dcSTom Erickson DB_DNODE_EXIT(db); 3086b4acc8bSahrens arc_buf_freeze(db->db_buf); 309fa9e4066Sahrens } 310fa9e4066Sahrens 311fa9e4066Sahrens /* 312f7170741SWill Andrews * Traverse the indicated range of the provided file 313fa9e4066Sahrens * and "free" all the blocks contained there. 314fa9e4066Sahrens */ 315fa9e4066Sahrens static void 316bf16b11eSMatthew Ahrens dnode_sync_free_range_impl(dnode_t *dn, uint64_t blkid, uint64_t nblks, 31743466aaeSMax Grossman dmu_tx_t *tx) 318fa9e4066Sahrens { 319fa9e4066Sahrens blkptr_t *bp = dn->dn_phys->dn_blkptr; 320fa9e4066Sahrens int dnlevel = dn->dn_phys->dn_nlevels; 32143466aaeSMax Grossman boolean_t trunc = B_FALSE; 322fa9e4066Sahrens 323fa9e4066Sahrens if (blkid > dn->dn_phys->dn_maxblkid) 324fa9e4066Sahrens return; 325fa9e4066Sahrens 326fa9e4066Sahrens ASSERT(dn->dn_phys->dn_maxblkid < UINT64_MAX); 32743466aaeSMax Grossman if (blkid + nblks > dn->dn_phys->dn_maxblkid) { 328fa9e4066Sahrens nblks = dn->dn_phys->dn_maxblkid - blkid + 1; 32943466aaeSMax Grossman trunc = B_TRUE; 33043466aaeSMax Grossman } 331fa9e4066Sahrens 332fa9e4066Sahrens /* There are no indirect blocks in the object */ 333fa9e4066Sahrens if (dnlevel == 1) { 334fa9e4066Sahrens if (blkid >= dn->dn_phys->dn_nblkptr) { 335fa9e4066Sahrens /* this range was never made persistent */ 336fa9e4066Sahrens return; 337fa9e4066Sahrens } 338fa9e4066Sahrens ASSERT3U(blkid + nblks, <=, dn->dn_phys->dn_nblkptr); 33943466aaeSMax Grossman free_blocks(dn, bp + blkid, nblks, tx); 34043466aaeSMax Grossman } else { 34143466aaeSMax Grossman int shift = (dnlevel - 1) * 34243466aaeSMax Grossman (dn->dn_phys->dn_indblkshift - SPA_BLKPTRSHIFT); 34343466aaeSMax Grossman int start = blkid >> shift; 34443466aaeSMax Grossman int end = (blkid + nblks - 1) >> shift; 34543466aaeSMax Grossman dmu_buf_impl_t *db; 34643466aaeSMax Grossman 34743466aaeSMax Grossman ASSERT(start < dn->dn_phys->dn_nblkptr); 34843466aaeSMax Grossman bp += start; 34943466aaeSMax Grossman for (int i = start; i <= end; i++, bp++) { 35043466aaeSMax Grossman if (BP_IS_HOLE(bp)) 35143466aaeSMax Grossman continue; 35243466aaeSMax Grossman rw_enter(&dn->dn_struct_rwlock, RW_READER); 35343466aaeSMax Grossman VERIFY0(dbuf_hold_impl(dn, dnlevel - 1, i, 354a2cdcdd2SPaul Dagnelie TRUE, FALSE, FTAG, &db)); 35543466aaeSMax Grossman rw_exit(&dn->dn_struct_rwlock); 35643466aaeSMax Grossman 35743466aaeSMax Grossman free_children(db, blkid, nblks, tx); 35843466aaeSMax Grossman dbuf_rele(db, FTAG); 359fa9e4066Sahrens } 360fa9e4066Sahrens } 36143466aaeSMax Grossman 362fa9e4066Sahrens if (trunc) { 36343466aaeSMax Grossman dn->dn_phys->dn_maxblkid = blkid == 0 ? 0 : blkid - 1; 36443466aaeSMax Grossman 365fa9e4066Sahrens uint64_t off = (dn->dn_phys->dn_maxblkid + 1) * 366fa9e4066Sahrens (dn->dn_phys->dn_datablkszsec << SPA_MINBLOCKSHIFT); 367fa9e4066Sahrens ASSERT(off < dn->dn_phys->dn_maxblkid || 368fa9e4066Sahrens dn->dn_phys->dn_maxblkid == 0 || 369cdb0ab79Smaybee dnode_next_offset(dn, 0, &off, 1, 1, 0) != 0); 370fa9e4066Sahrens } 371fa9e4066Sahrens } 372fa9e4066Sahrens 373bf16b11eSMatthew Ahrens typedef struct dnode_sync_free_range_arg { 374bf16b11eSMatthew Ahrens dnode_t *dsfra_dnode; 375bf16b11eSMatthew Ahrens dmu_tx_t *dsfra_tx; 376bf16b11eSMatthew Ahrens } dnode_sync_free_range_arg_t; 377bf16b11eSMatthew Ahrens 378bf16b11eSMatthew Ahrens static void 379bf16b11eSMatthew Ahrens dnode_sync_free_range(void *arg, uint64_t blkid, uint64_t nblks) 380bf16b11eSMatthew Ahrens { 381bf16b11eSMatthew Ahrens dnode_sync_free_range_arg_t *dsfra = arg; 382bf16b11eSMatthew Ahrens dnode_t *dn = dsfra->dsfra_dnode; 383bf16b11eSMatthew Ahrens 384bf16b11eSMatthew Ahrens mutex_exit(&dn->dn_mtx); 385bf16b11eSMatthew Ahrens dnode_sync_free_range_impl(dn, blkid, nblks, dsfra->dsfra_tx); 386bf16b11eSMatthew Ahrens mutex_enter(&dn->dn_mtx); 387bf16b11eSMatthew Ahrens } 388bf16b11eSMatthew Ahrens 389ea8dc4b6Seschrock /* 390f7170741SWill Andrews * Try to kick all the dnode's dbufs out of the cache... 391ea8dc4b6Seschrock */ 3921934e92fSmaybee void 3931934e92fSmaybee dnode_evict_dbufs(dnode_t *dn) 394ea8dc4b6Seschrock { 395bc9014e6SJustin Gibbs dmu_buf_impl_t db_marker; 396bc9014e6SJustin Gibbs dmu_buf_impl_t *db, *db_next; 397c543ec06Sahrens 398bc9014e6SJustin Gibbs mutex_enter(&dn->dn_dbufs_mtx); 399bc9014e6SJustin Gibbs for (db = avl_first(&dn->dn_dbufs); db != NULL; db = db_next) { 400c543ec06Sahrens 401744947dcSTom Erickson #ifdef DEBUG 402bc9014e6SJustin Gibbs DB_DNODE_ENTER(db); 403bc9014e6SJustin Gibbs ASSERT3P(DB_DNODE(db), ==, dn); 404bc9014e6SJustin Gibbs DB_DNODE_EXIT(db); 405744947dcSTom Erickson #endif /* DEBUG */ 406ea8dc4b6Seschrock 407bc9014e6SJustin Gibbs mutex_enter(&db->db_mtx); 408bc9014e6SJustin Gibbs if (db->db_state != DB_EVICTING && 409bc9014e6SJustin Gibbs refcount_is_zero(&db->db_holds)) { 410bc9014e6SJustin Gibbs db_marker.db_level = db->db_level; 411bc9014e6SJustin Gibbs db_marker.db_blkid = db->db_blkid; 412bc9014e6SJustin Gibbs db_marker.db_state = DB_SEARCH; 413bc9014e6SJustin Gibbs avl_insert_here(&dn->dn_dbufs, &db_marker, db, 414bc9014e6SJustin Gibbs AVL_BEFORE); 415bc9014e6SJustin Gibbs 416dcbf3bd6SGeorge Wilson dbuf_destroy(db); 417bc9014e6SJustin Gibbs 418bc9014e6SJustin Gibbs db_next = AVL_NEXT(&dn->dn_dbufs, &db_marker); 419bc9014e6SJustin Gibbs avl_remove(&dn->dn_dbufs, &db_marker); 420bc9014e6SJustin Gibbs } else { 421d2058105SJustin T. Gibbs db->db_pending_evict = TRUE; 422bc9014e6SJustin Gibbs mutex_exit(&db->db_mtx); 423bc9014e6SJustin Gibbs db_next = AVL_NEXT(&dn->dn_dbufs, db); 424ea8dc4b6Seschrock } 425bc9014e6SJustin Gibbs } 426bc9014e6SJustin Gibbs mutex_exit(&dn->dn_dbufs_mtx); 427c543ec06Sahrens 428cd485b49SJustin T. Gibbs dnode_evict_bonus(dn); 429cd485b49SJustin T. Gibbs } 430cd485b49SJustin T. Gibbs 431cd485b49SJustin T. Gibbs void 432cd485b49SJustin T. Gibbs dnode_evict_bonus(dnode_t *dn) 433cd485b49SJustin T. Gibbs { 434ea8dc4b6Seschrock rw_enter(&dn->dn_struct_rwlock, RW_WRITER); 435d2058105SJustin T. Gibbs if (dn->dn_bonus != NULL) { 436d2058105SJustin T. Gibbs if (refcount_is_zero(&dn->dn_bonus->db_holds)) { 437d2058105SJustin T. Gibbs mutex_enter(&dn->dn_bonus->db_mtx); 438dcbf3bd6SGeorge Wilson dbuf_destroy(dn->dn_bonus); 439d2058105SJustin T. Gibbs dn->dn_bonus = NULL; 440d2058105SJustin T. Gibbs } else { 441d2058105SJustin T. Gibbs dn->dn_bonus->db_pending_evict = TRUE; 442d2058105SJustin T. Gibbs } 443ea8dc4b6Seschrock } 444ea8dc4b6Seschrock rw_exit(&dn->dn_struct_rwlock); 445ea8dc4b6Seschrock } 446ea8dc4b6Seschrock 447c717a561Smaybee static void 448c717a561Smaybee dnode_undirty_dbufs(list_t *list) 449fa9e4066Sahrens { 450c717a561Smaybee dbuf_dirty_record_t *dr; 451fa9e4066Sahrens 452c717a561Smaybee while (dr = list_head(list)) { 453c717a561Smaybee dmu_buf_impl_t *db = dr->dr_dbuf; 454c717a561Smaybee uint64_t txg = dr->dr_txg; 455fa9e4066Sahrens 456b24ab676SJeff Bonwick if (db->db_level != 0) 457b24ab676SJeff Bonwick dnode_undirty_dbufs(&dr->dt.di.dr_children); 458b24ab676SJeff Bonwick 459fa9e4066Sahrens mutex_enter(&db->db_mtx); 460fa9e4066Sahrens /* XXX - use dbuf_undirty()? */ 461c717a561Smaybee list_remove(list, dr); 462c717a561Smaybee ASSERT(db->db_last_dirty == dr); 463c717a561Smaybee db->db_last_dirty = NULL; 464c717a561Smaybee db->db_dirtycnt -= 1; 465fa9e4066Sahrens if (db->db_level == 0) { 4660a586ceaSMark Shellenbaum ASSERT(db->db_blkid == DMU_BONUS_BLKID || 467c717a561Smaybee dr->dt.dl.dr_data == db->db_buf); 468c717a561Smaybee dbuf_unoverride(dr); 469d2b3cbbdSJorgen Lundman } else { 470d2b3cbbdSJorgen Lundman mutex_destroy(&dr->dt.di.dr_mtx); 471d2b3cbbdSJorgen Lundman list_destroy(&dr->dt.di.dr_children); 472fa9e4066Sahrens } 473c717a561Smaybee kmem_free(dr, sizeof (dbuf_dirty_record_t)); 474b24ab676SJeff Bonwick dbuf_rele_and_unlock(db, (void *)(uintptr_t)txg); 475fa9e4066Sahrens } 476c717a561Smaybee } 477fa9e4066Sahrens 478c717a561Smaybee static void 479c717a561Smaybee dnode_sync_free(dnode_t *dn, dmu_tx_t *tx) 480c717a561Smaybee { 481c717a561Smaybee int txgoff = tx->tx_txg & TXG_MASK; 482c717a561Smaybee 483c717a561Smaybee ASSERT(dmu_tx_is_syncing(tx)); 484c717a561Smaybee 485cdb0ab79Smaybee /* 486cdb0ab79Smaybee * Our contents should have been freed in dnode_sync() by the 487cdb0ab79Smaybee * free range record inserted by the caller of dnode_free(). 488cdb0ab79Smaybee */ 489fb09f5aaSMadhav Suresh ASSERT0(DN_USED_BYTES(dn->dn_phys)); 490cdb0ab79Smaybee ASSERT(BP_IS_HOLE(dn->dn_phys->dn_blkptr)); 491cdb0ab79Smaybee 492c717a561Smaybee dnode_undirty_dbufs(&dn->dn_dirty_records[txgoff]); 4931934e92fSmaybee dnode_evict_dbufs(dn); 494ea8dc4b6Seschrock 495ea8dc4b6Seschrock /* 496ea8dc4b6Seschrock * XXX - It would be nice to assert this, but we may still 497ea8dc4b6Seschrock * have residual holds from async evictions from the arc... 498ea8dc4b6Seschrock * 49955434c77Sek * zfs_obj_to_path() also depends on this being 50055434c77Sek * commented out. 50155434c77Sek * 502ea8dc4b6Seschrock * ASSERT3U(refcount_count(&dn->dn_holds), ==, 1); 503ea8dc4b6Seschrock */ 504fa9e4066Sahrens 505fa9e4066Sahrens /* Undirty next bits */ 506fa9e4066Sahrens dn->dn_next_nlevels[txgoff] = 0; 507fa9e4066Sahrens dn->dn_next_indblkshift[txgoff] = 0; 508c543ec06Sahrens dn->dn_next_blksz[txgoff] = 0; 509fa9e4066Sahrens 510fa9e4066Sahrens /* ASSERT(blkptrs are zero); */ 511fa9e4066Sahrens ASSERT(dn->dn_phys->dn_type != DMU_OT_NONE); 512fa9e4066Sahrens ASSERT(dn->dn_type != DMU_OT_NONE); 513fa9e4066Sahrens 514fa9e4066Sahrens ASSERT(dn->dn_free_txg > 0); 515fa9e4066Sahrens if (dn->dn_allocated_txg != dn->dn_free_txg) 51643466aaeSMax Grossman dmu_buf_will_dirty(&dn->dn_dbuf->db, tx); 517fa9e4066Sahrens bzero(dn->dn_phys, sizeof (dnode_phys_t)); 518fa9e4066Sahrens 519fa9e4066Sahrens mutex_enter(&dn->dn_mtx); 520fa9e4066Sahrens dn->dn_type = DMU_OT_NONE; 521fa9e4066Sahrens dn->dn_maxblkid = 0; 522fa9e4066Sahrens dn->dn_allocated_txg = 0; 523758f6e0bSgw dn->dn_free_txg = 0; 5240a586ceaSMark Shellenbaum dn->dn_have_spill = B_FALSE; 525fa9e4066Sahrens mutex_exit(&dn->dn_mtx); 526fa9e4066Sahrens 527ea8dc4b6Seschrock ASSERT(dn->dn_object != DMU_META_DNODE_OBJECT); 528fa9e4066Sahrens 529fa9e4066Sahrens dnode_rele(dn, (void *)(uintptr_t)tx->tx_txg); 530fa9e4066Sahrens /* 531fa9e4066Sahrens * Now that we've released our hold, the dnode may 532fa9e4066Sahrens * be evicted, so we musn't access it. 533fa9e4066Sahrens */ 534fa9e4066Sahrens } 535fa9e4066Sahrens 536fa9e4066Sahrens /* 537c717a561Smaybee * Write out the dnode's dirty buffers. 538fa9e4066Sahrens */ 539c717a561Smaybee void 540c717a561Smaybee dnode_sync(dnode_t *dn, dmu_tx_t *tx) 541fa9e4066Sahrens { 542fa9e4066Sahrens dnode_phys_t *dnp = dn->dn_phys; 543c717a561Smaybee int txgoff = tx->tx_txg & TXG_MASK; 544c717a561Smaybee list_t *list = &dn->dn_dirty_records[txgoff]; 54514843421SMatthew Ahrens static const dnode_phys_t zerodn = { 0 }; 5460a586ceaSMark Shellenbaum boolean_t kill_spill = B_FALSE; 547fa9e4066Sahrens 548fa9e4066Sahrens ASSERT(dmu_tx_is_syncing(tx)); 549fa9e4066Sahrens ASSERT(dnp->dn_type != DMU_OT_NONE || dn->dn_allocated_txg); 55014843421SMatthew Ahrens ASSERT(dnp->dn_type != DMU_OT_NONE || 55114843421SMatthew Ahrens bcmp(dnp, &zerodn, DNODE_SIZE) == 0); 5529c9dc39aSek DNODE_VERIFY(dn); 553c543ec06Sahrens 554c717a561Smaybee ASSERT(dn->dn_dbuf == NULL || arc_released(dn->dn_dbuf->db_buf)); 555fa9e4066Sahrens 55614843421SMatthew Ahrens if (dmu_objset_userused_enabled(dn->dn_objset) && 55714843421SMatthew Ahrens !DMU_OBJECT_IS_SPECIAL(dn->dn_object)) { 5580a586ceaSMark Shellenbaum mutex_enter(&dn->dn_mtx); 5590a586ceaSMark Shellenbaum dn->dn_oldused = DN_USED_BYTES(dn->dn_phys); 5600a586ceaSMark Shellenbaum dn->dn_oldflags = dn->dn_phys->dn_flags; 56114843421SMatthew Ahrens dn->dn_phys->dn_flags |= DNODE_FLAG_USERUSED_ACCOUNTED; 5620a586ceaSMark Shellenbaum mutex_exit(&dn->dn_mtx); 56306e0070dSMark Shellenbaum dmu_objset_userquota_get_ids(dn, B_FALSE, tx); 56414843421SMatthew Ahrens } else { 56514843421SMatthew Ahrens /* Once we account for it, we should always account for it. */ 56614843421SMatthew Ahrens ASSERT(!(dn->dn_phys->dn_flags & 56714843421SMatthew Ahrens DNODE_FLAG_USERUSED_ACCOUNTED)); 56814843421SMatthew Ahrens } 56914843421SMatthew Ahrens 570fa9e4066Sahrens mutex_enter(&dn->dn_mtx); 571fa9e4066Sahrens if (dn->dn_allocated_txg == tx->tx_txg) { 572fa9e4066Sahrens /* The dnode is newly allocated or reallocated */ 573fa9e4066Sahrens if (dnp->dn_type == DMU_OT_NONE) { 574fa9e4066Sahrens /* this is a first alloc, not a realloc */ 575fa9e4066Sahrens dnp->dn_nlevels = 1; 576da03de99SMark Maybee dnp->dn_nblkptr = dn->dn_nblkptr; 577fa9e4066Sahrens } 578fa9e4066Sahrens 579fa9e4066Sahrens dnp->dn_type = dn->dn_type; 580fa9e4066Sahrens dnp->dn_bonustype = dn->dn_bonustype; 581fa9e4066Sahrens dnp->dn_bonuslen = dn->dn_bonuslen; 582fa9e4066Sahrens } 583c717a561Smaybee ASSERT(dnp->dn_nlevels > 1 || 584f676ed34Sahrens BP_IS_HOLE(&dnp->dn_blkptr[0]) || 5855d7b4d43SMatthew Ahrens BP_IS_EMBEDDED(&dnp->dn_blkptr[0]) || 586f676ed34Sahrens BP_GET_LSIZE(&dnp->dn_blkptr[0]) == 587f676ed34Sahrens dnp->dn_datablkszsec << SPA_MINBLOCKSHIFT); 5885d7b4d43SMatthew Ahrens ASSERT(dnp->dn_nlevels < 2 || 5895d7b4d43SMatthew Ahrens BP_IS_HOLE(&dnp->dn_blkptr[0]) || 5905d7b4d43SMatthew Ahrens BP_GET_LSIZE(&dnp->dn_blkptr[0]) == 1 << dnp->dn_indblkshift); 591f676ed34Sahrens 5922acef22dSMatthew Ahrens if (dn->dn_next_type[txgoff] != 0) { 5932acef22dSMatthew Ahrens dnp->dn_type = dn->dn_type; 5942acef22dSMatthew Ahrens dn->dn_next_type[txgoff] = 0; 5952acef22dSMatthew Ahrens } 5962acef22dSMatthew Ahrens 5972acef22dSMatthew Ahrens if (dn->dn_next_blksz[txgoff] != 0) { 598c543ec06Sahrens ASSERT(P2PHASE(dn->dn_next_blksz[txgoff], 599fa9e4066Sahrens SPA_MINBLOCKSIZE) == 0); 600f676ed34Sahrens ASSERT(BP_IS_HOLE(&dnp->dn_blkptr[0]) || 601cdb0ab79Smaybee dn->dn_maxblkid == 0 || list_head(list) != NULL || 602347a31bcSahrens dn->dn_next_blksz[txgoff] >> SPA_MINBLOCKSHIFT == 603bf16b11eSMatthew Ahrens dnp->dn_datablkszsec || 604bf16b11eSMatthew Ahrens range_tree_space(dn->dn_free_ranges[txgoff]) != 0); 605fa9e4066Sahrens dnp->dn_datablkszsec = 606c543ec06Sahrens dn->dn_next_blksz[txgoff] >> SPA_MINBLOCKSHIFT; 607c543ec06Sahrens dn->dn_next_blksz[txgoff] = 0; 608fa9e4066Sahrens } 609fa9e4066Sahrens 6102acef22dSMatthew Ahrens if (dn->dn_next_bonuslen[txgoff] != 0) { 6111934e92fSmaybee if (dn->dn_next_bonuslen[txgoff] == DN_ZERO_BONUSLEN) 6121934e92fSmaybee dnp->dn_bonuslen = 0; 6131934e92fSmaybee else 6141934e92fSmaybee dnp->dn_bonuslen = dn->dn_next_bonuslen[txgoff]; 6151934e92fSmaybee ASSERT(dnp->dn_bonuslen <= DN_MAX_BONUSLEN); 6161934e92fSmaybee dn->dn_next_bonuslen[txgoff] = 0; 6171934e92fSmaybee } 6181934e92fSmaybee 6192acef22dSMatthew Ahrens if (dn->dn_next_bonustype[txgoff] != 0) { 620ad135b5dSChristopher Siden ASSERT(DMU_OT_IS_VALID(dn->dn_next_bonustype[txgoff])); 6210a586ceaSMark Shellenbaum dnp->dn_bonustype = dn->dn_next_bonustype[txgoff]; 6220a586ceaSMark Shellenbaum dn->dn_next_bonustype[txgoff] = 0; 6230a586ceaSMark Shellenbaum } 6240a586ceaSMark Shellenbaum 62543466aaeSMax Grossman boolean_t freeing_dnode = dn->dn_free_txg > 0 && 62643466aaeSMax Grossman dn->dn_free_txg <= tx->tx_txg; 62743466aaeSMax Grossman 6280a586ceaSMark Shellenbaum /* 629e6518318SMatthew Ahrens * Remove the spill block if we have been explicitly asked to 630e6518318SMatthew Ahrens * remove it, or if the object is being removed. 6310a586ceaSMark Shellenbaum */ 632e6518318SMatthew Ahrens if (dn->dn_rm_spillblk[txgoff] || freeing_dnode) { 633e6518318SMatthew Ahrens if (dnp->dn_flags & DNODE_FLAG_SPILL_BLKPTR) 6340a586ceaSMark Shellenbaum kill_spill = B_TRUE; 6350a586ceaSMark Shellenbaum dn->dn_rm_spillblk[txgoff] = 0; 6360a586ceaSMark Shellenbaum } 6370a586ceaSMark Shellenbaum 6382acef22dSMatthew Ahrens if (dn->dn_next_indblkshift[txgoff] != 0) { 639fa9e4066Sahrens ASSERT(dnp->dn_nlevels == 1); 640fa9e4066Sahrens dnp->dn_indblkshift = dn->dn_next_indblkshift[txgoff]; 641fa9e4066Sahrens dn->dn_next_indblkshift[txgoff] = 0; 642fa9e4066Sahrens } 643fa9e4066Sahrens 644fa9e4066Sahrens /* 645fa9e4066Sahrens * Just take the live (open-context) values for checksum and compress. 646fa9e4066Sahrens * Strictly speaking it's a future leak, but nothing bad happens if we 647fa9e4066Sahrens * start using the new checksum or compress algorithm a little early. 648fa9e4066Sahrens */ 649fa9e4066Sahrens dnp->dn_checksum = dn->dn_checksum; 650fa9e4066Sahrens dnp->dn_compress = dn->dn_compress; 651fa9e4066Sahrens 652fa9e4066Sahrens mutex_exit(&dn->dn_mtx); 653fa9e4066Sahrens 6540a586ceaSMark Shellenbaum if (kill_spill) { 65543466aaeSMax Grossman free_blocks(dn, &dn->dn_phys->dn_spill, 1, tx); 6560a586ceaSMark Shellenbaum mutex_enter(&dn->dn_mtx); 6570a586ceaSMark Shellenbaum dnp->dn_flags &= ~DNODE_FLAG_SPILL_BLKPTR; 6580a586ceaSMark Shellenbaum mutex_exit(&dn->dn_mtx); 6590a586ceaSMark Shellenbaum } 6600a586ceaSMark Shellenbaum 661fa9e4066Sahrens /* process all the "freed" ranges in the file */ 662bf16b11eSMatthew Ahrens if (dn->dn_free_ranges[txgoff] != NULL) { 663bf16b11eSMatthew Ahrens dnode_sync_free_range_arg_t dsfra; 664bf16b11eSMatthew Ahrens dsfra.dsfra_dnode = dn; 665bf16b11eSMatthew Ahrens dsfra.dsfra_tx = tx; 666cdb0ab79Smaybee mutex_enter(&dn->dn_mtx); 667bf16b11eSMatthew Ahrens range_tree_vacate(dn->dn_free_ranges[txgoff], 668bf16b11eSMatthew Ahrens dnode_sync_free_range, &dsfra); 669bf16b11eSMatthew Ahrens range_tree_destroy(dn->dn_free_ranges[txgoff]); 670bf16b11eSMatthew Ahrens dn->dn_free_ranges[txgoff] = NULL; 671cdb0ab79Smaybee mutex_exit(&dn->dn_mtx); 672fa9e4066Sahrens } 6731934e92fSmaybee 67443466aaeSMax Grossman if (freeing_dnode) { 675*af346df5SNed Bass dn->dn_objset->os_freed_dnodes++; 676c717a561Smaybee dnode_sync_free(dn, tx); 677c717a561Smaybee return; 678fa9e4066Sahrens } 679fa9e4066Sahrens 680e503a685SGeorge Wilson if (dn->dn_next_nlevels[txgoff]) { 681e503a685SGeorge Wilson dnode_increase_indirection(dn, tx); 682e503a685SGeorge Wilson dn->dn_next_nlevels[txgoff] = 0; 683e503a685SGeorge Wilson } 684e503a685SGeorge Wilson 685da03de99SMark Maybee if (dn->dn_next_nblkptr[txgoff]) { 686da03de99SMark Maybee /* this should only happen on a realloc */ 687da03de99SMark Maybee ASSERT(dn->dn_allocated_txg == tx->tx_txg); 688da03de99SMark Maybee if (dn->dn_next_nblkptr[txgoff] > dnp->dn_nblkptr) { 689da03de99SMark Maybee /* zero the new blkptrs we are gaining */ 690da03de99SMark Maybee bzero(dnp->dn_blkptr + dnp->dn_nblkptr, 691da03de99SMark Maybee sizeof (blkptr_t) * 692da03de99SMark Maybee (dn->dn_next_nblkptr[txgoff] - dnp->dn_nblkptr)); 693da03de99SMark Maybee #ifdef ZFS_DEBUG 694da03de99SMark Maybee } else { 695da03de99SMark Maybee int i; 696da03de99SMark Maybee ASSERT(dn->dn_next_nblkptr[txgoff] < dnp->dn_nblkptr); 697da03de99SMark Maybee /* the blkptrs we are losing better be unallocated */ 698da03de99SMark Maybee for (i = dn->dn_next_nblkptr[txgoff]; 699da03de99SMark Maybee i < dnp->dn_nblkptr; i++) 700da03de99SMark Maybee ASSERT(BP_IS_HOLE(&dnp->dn_blkptr[i])); 701da03de99SMark Maybee #endif 702da03de99SMark Maybee } 703da03de99SMark Maybee mutex_enter(&dn->dn_mtx); 704da03de99SMark Maybee dnp->dn_nblkptr = dn->dn_next_nblkptr[txgoff]; 705da03de99SMark Maybee dn->dn_next_nblkptr[txgoff] = 0; 706da03de99SMark Maybee mutex_exit(&dn->dn_mtx); 707da03de99SMark Maybee } 708da03de99SMark Maybee 70946e1baa6SMatthew Ahrens dbuf_sync_list(list, dn->dn_phys->dn_nlevels - 1, tx); 710fa9e4066Sahrens 71114843421SMatthew Ahrens if (!DMU_OBJECT_IS_SPECIAL(dn->dn_object)) { 712c717a561Smaybee ASSERT3P(list_head(list), ==, NULL); 713c717a561Smaybee dnode_rele(dn, (void *)(uintptr_t)tx->tx_txg); 714fa9e4066Sahrens } 715c717a561Smaybee 716c717a561Smaybee /* 717c717a561Smaybee * Although we have dropped our reference to the dnode, it 718c717a561Smaybee * can't be evicted until its written, and we haven't yet 719c717a561Smaybee * initiated the IO for the dnode's dbuf. 720c717a561Smaybee */ 721fa9e4066Sahrens } 722