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 */ 21fa9e4066Sahrens /* 2228d97a71SMark Shellenbaum * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. 23bf16b11eSMatthew Ahrens * Copyright (c) 2012, 2014 by Delphix. All rights reserved. 24bc9014e6SJustin Gibbs * Copyright (c) 2014 Spectra Logic Corporation, All rights reserved. 25fa9e4066Sahrens */ 26fa9e4066Sahrens 27fa9e4066Sahrens #ifndef _SYS_DNODE_H 28fa9e4066Sahrens #define _SYS_DNODE_H 29fa9e4066Sahrens 30fa9e4066Sahrens #include <sys/zfs_context.h> 31fa9e4066Sahrens #include <sys/avl.h> 32fa9e4066Sahrens #include <sys/spa.h> 33fa9e4066Sahrens #include <sys/txg.h> 34c717a561Smaybee #include <sys/zio.h> 35fa9e4066Sahrens #include <sys/refcount.h> 36fa9e4066Sahrens #include <sys/dmu_zfetch.h> 37744947dcSTom Erickson #include <sys/zrlock.h> 38fa9e4066Sahrens 39fa9e4066Sahrens #ifdef __cplusplus 40fa9e4066Sahrens extern "C" { 41fa9e4066Sahrens #endif 42fa9e4066Sahrens 43fa9e4066Sahrens /* 44cdb0ab79Smaybee * dnode_hold() flags. 45fa9e4066Sahrens */ 46fa9e4066Sahrens #define DNODE_MUST_BE_ALLOCATED 1 47fa9e4066Sahrens #define DNODE_MUST_BE_FREE 2 48fa9e4066Sahrens 49fa9e4066Sahrens /* 50cdb0ab79Smaybee * dnode_next_offset() flags. 51cdb0ab79Smaybee */ 52cdb0ab79Smaybee #define DNODE_FIND_HOLE 1 53cdb0ab79Smaybee #define DNODE_FIND_BACKWARDS 2 54cdb0ab79Smaybee #define DNODE_FIND_HAVELOCK 4 55cdb0ab79Smaybee 56cdb0ab79Smaybee /* 57fa9e4066Sahrens * Fixed constants. 58fa9e4066Sahrens */ 59fa9e4066Sahrens #define DNODE_SHIFT 9 /* 512 bytes */ 60e94f268aSMatthew Ahrens #define DN_MIN_INDBLKSHIFT 12 /* 4k */ 61*4b5c8e93SMatthew Ahrens #define DN_MAX_INDBLKSHIFT 17 /* 128k */ 62fa9e4066Sahrens #define DNODE_BLOCK_SHIFT 14 /* 16k */ 63fa9e4066Sahrens #define DNODE_CORE_SIZE 64 /* 64 bytes for dnode sans blkptrs */ 64fa9e4066Sahrens #define DN_MAX_OBJECT_SHIFT 48 /* 256 trillion (zfs_fid_t limit) */ 65fa9e4066Sahrens #define DN_MAX_OFFSET_SHIFT 64 /* 2^64 bytes in a dnode */ 66fa9e4066Sahrens 67fa9e4066Sahrens /* 680a586ceaSMark Shellenbaum * dnode id flags 690a586ceaSMark Shellenbaum * 700a586ceaSMark Shellenbaum * Note: a file will never ever have its 710a586ceaSMark Shellenbaum * ids moved from bonus->spill 720a586ceaSMark Shellenbaum * and only in a crypto environment would it be on spill 730a586ceaSMark Shellenbaum */ 740a586ceaSMark Shellenbaum #define DN_ID_CHKED_BONUS 0x1 750a586ceaSMark Shellenbaum #define DN_ID_CHKED_SPILL 0x2 760a586ceaSMark Shellenbaum #define DN_ID_OLD_EXIST 0x4 770a586ceaSMark Shellenbaum #define DN_ID_NEW_EXIST 0x8 780a586ceaSMark Shellenbaum 790a586ceaSMark Shellenbaum /* 80fa9e4066Sahrens * Derived constants. 81fa9e4066Sahrens */ 82fa9e4066Sahrens #define DNODE_SIZE (1 << DNODE_SHIFT) 83fa9e4066Sahrens #define DN_MAX_NBLKPTR ((DNODE_SIZE - DNODE_CORE_SIZE) >> SPA_BLKPTRSHIFT) 84fa9e4066Sahrens #define DN_MAX_BONUSLEN (DNODE_SIZE - DNODE_CORE_SIZE - (1 << SPA_BLKPTRSHIFT)) 85ea8dc4b6Seschrock #define DN_MAX_OBJECT (1ULL << DN_MAX_OBJECT_SHIFT) 861934e92fSmaybee #define DN_ZERO_BONUSLEN (DN_MAX_BONUSLEN + 1) 870a586ceaSMark Shellenbaum #define DN_KILL_SPILLBLK (1) 88fa9e4066Sahrens 89fa9e4066Sahrens #define DNODES_PER_BLOCK_SHIFT (DNODE_BLOCK_SHIFT - DNODE_SHIFT) 90fa9e4066Sahrens #define DNODES_PER_BLOCK (1ULL << DNODES_PER_BLOCK_SHIFT) 91*4b5c8e93SMatthew Ahrens 92*4b5c8e93SMatthew Ahrens /* 93*4b5c8e93SMatthew Ahrens * This is inaccurate if the indblkshift of the particular object is not the 94*4b5c8e93SMatthew Ahrens * max. But it's only used by userland to calculate the zvol reservation. 95*4b5c8e93SMatthew Ahrens */ 96fa9e4066Sahrens #define DNODES_PER_LEVEL_SHIFT (DN_MAX_INDBLKSHIFT - SPA_BLKPTRSHIFT) 97c1449561SEric Taylor #define DNODES_PER_LEVEL (1ULL << DNODES_PER_LEVEL_SHIFT) 98fa9e4066Sahrens 99fa9e4066Sahrens /* The +2 here is a cheesy way to round up */ 100fa9e4066Sahrens #define DN_MAX_LEVELS (2 + ((DN_MAX_OFFSET_SHIFT - SPA_MINBLOCKSHIFT) / \ 101fa9e4066Sahrens (DN_MIN_INDBLKSHIFT - SPA_BLKPTRSHIFT))) 102fa9e4066Sahrens 103fa9e4066Sahrens #define DN_BONUS(dnp) ((void*)((dnp)->dn_bonus + \ 104fa9e4066Sahrens (((dnp)->dn_nblkptr - 1) * sizeof (blkptr_t)))) 105fa9e4066Sahrens 10699653d4eSeschrock #define DN_USED_BYTES(dnp) (((dnp)->dn_flags & DNODE_FLAG_USED_BYTES) ? \ 10799653d4eSeschrock (dnp)->dn_used : (dnp)->dn_used << SPA_MINBLOCKSHIFT) 10899653d4eSeschrock 109fa9e4066Sahrens #define EPB(blkshift, typeshift) (1 << (blkshift - typeshift)) 110fa9e4066Sahrens 111fa9e4066Sahrens struct dmu_buf_impl; 112503ad85cSMatthew Ahrens struct objset; 113fa9e4066Sahrens struct zio; 114fa9e4066Sahrens 115fa9e4066Sahrens enum dnode_dirtycontext { 116fa9e4066Sahrens DN_UNDIRTIED, 117fa9e4066Sahrens DN_DIRTY_OPEN, 118fa9e4066Sahrens DN_DIRTY_SYNC 119fa9e4066Sahrens }; 120fa9e4066Sahrens 12199653d4eSeschrock /* Is dn_used in bytes? if not, it's in multiples of SPA_MINBLOCKSIZE */ 12299653d4eSeschrock #define DNODE_FLAG_USED_BYTES (1<<0) 12314843421SMatthew Ahrens #define DNODE_FLAG_USERUSED_ACCOUNTED (1<<1) 12499653d4eSeschrock 1250a586ceaSMark Shellenbaum /* Does dnode have a SA spill blkptr in bonus? */ 1260a586ceaSMark Shellenbaum #define DNODE_FLAG_SPILL_BLKPTR (1<<2) 1270a586ceaSMark Shellenbaum 128fa9e4066Sahrens typedef struct dnode_phys { 129fa9e4066Sahrens uint8_t dn_type; /* dmu_object_type_t */ 130fa9e4066Sahrens uint8_t dn_indblkshift; /* ln2(indirect block size) */ 131fa9e4066Sahrens uint8_t dn_nlevels; /* 1=dn_blkptr->data blocks */ 132fa9e4066Sahrens uint8_t dn_nblkptr; /* length of dn_blkptr */ 133fa9e4066Sahrens uint8_t dn_bonustype; /* type of data in bonus buffer */ 134fa9e4066Sahrens uint8_t dn_checksum; /* ZIO_CHECKSUM type */ 135fa9e4066Sahrens uint8_t dn_compress; /* ZIO_COMPRESS type */ 13699653d4eSeschrock uint8_t dn_flags; /* DNODE_FLAG_* */ 137fa9e4066Sahrens uint16_t dn_datablkszsec; /* data block size in 512b sectors */ 138fa9e4066Sahrens uint16_t dn_bonuslen; /* length of dn_bonus */ 139fa9e4066Sahrens uint8_t dn_pad2[4]; 140fa9e4066Sahrens 141fa9e4066Sahrens /* accounting is protected by dn_dirty_mtx */ 142fa9e4066Sahrens uint64_t dn_maxblkid; /* largest allocated block ID */ 14399653d4eSeschrock uint64_t dn_used; /* bytes (or sectors) of disk space */ 144fa9e4066Sahrens 145fa9e4066Sahrens uint64_t dn_pad3[4]; 146fa9e4066Sahrens 147fa9e4066Sahrens blkptr_t dn_blkptr[1]; 1480a586ceaSMark Shellenbaum uint8_t dn_bonus[DN_MAX_BONUSLEN - sizeof (blkptr_t)]; 1490a586ceaSMark Shellenbaum blkptr_t dn_spill; 150fa9e4066Sahrens } dnode_phys_t; 151fa9e4066Sahrens 152fa9e4066Sahrens typedef struct dnode { 153fa9e4066Sahrens /* 154f7170741SWill Andrews * Protects the structure of the dnode, including the number of levels 155f7170741SWill Andrews * of indirection (dn_nlevels), dn_maxblkid, and dn_next_* 156fa9e4066Sahrens */ 157fa9e4066Sahrens krwlock_t dn_struct_rwlock; 158fa9e4066Sahrens 15914843421SMatthew Ahrens /* Our link on dn_objset->os_dnodes list; protected by os_lock. */ 160fa9e4066Sahrens list_node_t dn_link; 161fa9e4066Sahrens 162fa9e4066Sahrens /* immutable: */ 163503ad85cSMatthew Ahrens struct objset *dn_objset; 164fa9e4066Sahrens uint64_t dn_object; 165fa9e4066Sahrens struct dmu_buf_impl *dn_dbuf; 166744947dcSTom Erickson struct dnode_handle *dn_handle; 167fa9e4066Sahrens dnode_phys_t *dn_phys; /* pointer into dn->dn_dbuf->db.db_data */ 168fa9e4066Sahrens 169fa9e4066Sahrens /* 170c543ec06Sahrens * Copies of stuff in dn_phys. They're valid in the open 171c543ec06Sahrens * context (eg. even before the dnode is first synced). 172c543ec06Sahrens * Where necessary, these are protected by dn_struct_rwlock. 173fa9e4066Sahrens */ 174c543ec06Sahrens dmu_object_type_t dn_type; /* object type */ 175c543ec06Sahrens uint16_t dn_bonuslen; /* bonus length */ 176c543ec06Sahrens uint8_t dn_bonustype; /* bonus type */ 177fa9e4066Sahrens uint8_t dn_nblkptr; /* number of blkptrs (immutable) */ 178fa9e4066Sahrens uint8_t dn_checksum; /* ZIO_CHECKSUM type */ 179fa9e4066Sahrens uint8_t dn_compress; /* ZIO_COMPRESS type */ 180fa9e4066Sahrens uint8_t dn_nlevels; 181fa9e4066Sahrens uint8_t dn_indblkshift; 182c543ec06Sahrens uint8_t dn_datablkshift; /* zero if blksz not power of 2! */ 183744947dcSTom Erickson uint8_t dn_moved; /* Has this dnode been moved? */ 184c543ec06Sahrens uint16_t dn_datablkszsec; /* in 512b sectors */ 185c543ec06Sahrens uint32_t dn_datablksz; /* in bytes */ 186c543ec06Sahrens uint64_t dn_maxblkid; 1872acef22dSMatthew Ahrens uint8_t dn_next_type[TXG_SIZE]; 188da03de99SMark Maybee uint8_t dn_next_nblkptr[TXG_SIZE]; 189fa9e4066Sahrens uint8_t dn_next_nlevels[TXG_SIZE]; 190fa9e4066Sahrens uint8_t dn_next_indblkshift[TXG_SIZE]; 1910a586ceaSMark Shellenbaum uint8_t dn_next_bonustype[TXG_SIZE]; 1920a586ceaSMark Shellenbaum uint8_t dn_rm_spillblk[TXG_SIZE]; /* for removing spill blk */ 1931934e92fSmaybee uint16_t dn_next_bonuslen[TXG_SIZE]; 194c543ec06Sahrens uint32_t dn_next_blksz[TXG_SIZE]; /* next block size in bytes */ 195fa9e4066Sahrens 196744947dcSTom Erickson /* protected by dn_dbufs_mtx; declared here to fill 32-bit hole */ 197744947dcSTom Erickson uint32_t dn_dbufs_count; /* count of dn_dbufs */ 198713d6c20SMatthew Ahrens /* There are no level-0 blocks of this blkid or higher in dn_dbufs */ 199713d6c20SMatthew Ahrens uint64_t dn_unlisted_l0_blkid; 200744947dcSTom Erickson 201fa9e4066Sahrens /* protected by os_lock: */ 202fa9e4066Sahrens list_node_t dn_dirty_link[TXG_SIZE]; /* next on dataset's dirty */ 203fa9e4066Sahrens 204fa9e4066Sahrens /* protected by dn_mtx: */ 205fa9e4066Sahrens kmutex_t dn_mtx; 206c717a561Smaybee list_t dn_dirty_records[TXG_SIZE]; 207bf16b11eSMatthew Ahrens struct range_tree *dn_free_ranges[TXG_SIZE]; 208fa9e4066Sahrens uint64_t dn_allocated_txg; 209fa9e4066Sahrens uint64_t dn_free_txg; 210fa9e4066Sahrens uint64_t dn_assigned_txg; 211fa9e4066Sahrens kcondvar_t dn_notxholds; 212fa9e4066Sahrens enum dnode_dirtycontext dn_dirtyctx; 213fa9e4066Sahrens uint8_t *dn_dirtyctx_firstset; /* dbg: contents meaningless */ 214fa9e4066Sahrens 215fa9e4066Sahrens /* protected by own devices */ 216fa9e4066Sahrens refcount_t dn_tx_holds; 217fa9e4066Sahrens refcount_t dn_holds; 218fa9e4066Sahrens 219fa9e4066Sahrens kmutex_t dn_dbufs_mtx; 22086bb58aeSAlex Reece /* 22186bb58aeSAlex Reece * Descendent dbufs, ordered by dbuf_compare. Note that dn_dbufs 22286bb58aeSAlex Reece * can contain multiple dbufs of the same (level, blkid) when a 22386bb58aeSAlex Reece * dbuf is marked DB_EVICTING without being removed from 22486bb58aeSAlex Reece * dn_dbufs. To maintain the avl invariant that there cannot be 22586bb58aeSAlex Reece * duplicate entries, we order the dbufs by an arbitrary value - 22686bb58aeSAlex Reece * their address in memory. This means that dn_dbufs cannot be used to 22786bb58aeSAlex Reece * directly look up a dbuf. Instead, callers must use avl_walk, have 22886bb58aeSAlex Reece * a reference to the dbuf, or look up a non-existant node with 22986bb58aeSAlex Reece * db_state = DB_SEARCH (see dbuf_free_range for an example). 23086bb58aeSAlex Reece */ 23186bb58aeSAlex Reece avl_tree_t dn_dbufs; 232744947dcSTom Erickson 233744947dcSTom Erickson /* protected by dn_struct_rwlock */ 234ea8dc4b6Seschrock struct dmu_buf_impl *dn_bonus; /* bonus buffer dbuf */ 235744947dcSTom Erickson 2360a586ceaSMark Shellenbaum boolean_t dn_have_spill; /* have spill or are spilling */ 237fa9e4066Sahrens 238c717a561Smaybee /* parent IO for current sync write */ 239c717a561Smaybee zio_t *dn_zio; 240c717a561Smaybee 24114843421SMatthew Ahrens /* used in syncing context */ 2420a586ceaSMark Shellenbaum uint64_t dn_oldused; /* old phys used bytes */ 2430a586ceaSMark Shellenbaum uint64_t dn_oldflags; /* old phys dn_flags */ 2440a586ceaSMark Shellenbaum uint64_t dn_olduid, dn_oldgid; 2450a586ceaSMark Shellenbaum uint64_t dn_newuid, dn_newgid; 2460a586ceaSMark Shellenbaum int dn_id_flags; 24714843421SMatthew Ahrens 248fa9e4066Sahrens /* holds prefetch structure */ 249fa9e4066Sahrens struct zfetch dn_zfetch; 250fa9e4066Sahrens } dnode_t; 251fa9e4066Sahrens 252744947dcSTom Erickson /* 253744947dcSTom Erickson * Adds a level of indirection between the dbuf and the dnode to avoid 254744947dcSTom Erickson * iterating descendent dbufs in dnode_move(). Handles are not allocated 255744947dcSTom Erickson * individually, but as an array of child dnodes in dnode_hold_impl(). 256744947dcSTom Erickson */ 257744947dcSTom Erickson typedef struct dnode_handle { 258744947dcSTom Erickson /* Protects dnh_dnode from modification by dnode_move(). */ 259744947dcSTom Erickson zrlock_t dnh_zrlock; 260744947dcSTom Erickson dnode_t *dnh_dnode; 261744947dcSTom Erickson } dnode_handle_t; 262744947dcSTom Erickson 263744947dcSTom Erickson typedef struct dnode_children { 264bc9014e6SJustin Gibbs dmu_buf_user_t dnc_dbu; /* User evict data */ 265744947dcSTom Erickson size_t dnc_count; /* number of children */ 2667f18da4cSJustin T. Gibbs dnode_handle_t dnc_children[]; /* sized dynamically */ 267744947dcSTom Erickson } dnode_children_t; 268744947dcSTom Erickson 269fa9e4066Sahrens typedef struct free_range { 270fa9e4066Sahrens avl_node_t fr_node; 271fa9e4066Sahrens uint64_t fr_blkid; 272fa9e4066Sahrens uint64_t fr_nblks; 273fa9e4066Sahrens } free_range_t; 274fa9e4066Sahrens 275bc9014e6SJustin Gibbs void dnode_special_open(struct objset *dd, dnode_phys_t *dnp, 276744947dcSTom Erickson uint64_t object, dnode_handle_t *dnh); 277744947dcSTom Erickson void dnode_special_close(dnode_handle_t *dnh); 278fa9e4066Sahrens 2791934e92fSmaybee void dnode_setbonuslen(dnode_t *dn, int newsize, dmu_tx_t *tx); 2800a586ceaSMark Shellenbaum void dnode_setbonus_type(dnode_t *dn, dmu_object_type_t, dmu_tx_t *tx); 2810a586ceaSMark Shellenbaum void dnode_rm_spill(dnode_t *dn, dmu_tx_t *tx); 2820a586ceaSMark Shellenbaum 283503ad85cSMatthew Ahrens int dnode_hold(struct objset *dd, uint64_t object, 284ea8dc4b6Seschrock void *ref, dnode_t **dnp); 285503ad85cSMatthew Ahrens int dnode_hold_impl(struct objset *dd, uint64_t object, int flag, 286ea8dc4b6Seschrock void *ref, dnode_t **dnp); 2871934e92fSmaybee boolean_t dnode_add_ref(dnode_t *dn, void *ref); 288fa9e4066Sahrens void dnode_rele(dnode_t *dn, void *ref); 289cd485b49SJustin T. Gibbs void dnode_rele_and_unlock(dnode_t *dn, void *tag); 290fa9e4066Sahrens void dnode_setdirty(dnode_t *dn, dmu_tx_t *tx); 291c717a561Smaybee void dnode_sync(dnode_t *dn, dmu_tx_t *tx); 292fa9e4066Sahrens void dnode_allocate(dnode_t *dn, dmu_object_type_t ot, int blocksize, int ibs, 293fa9e4066Sahrens dmu_object_type_t bonustype, int bonuslen, dmu_tx_t *tx); 294fa9e4066Sahrens void dnode_reallocate(dnode_t *dn, dmu_object_type_t ot, int blocksize, 295fa9e4066Sahrens dmu_object_type_t bonustype, int bonuslen, dmu_tx_t *tx); 296fa9e4066Sahrens void dnode_free(dnode_t *dn, dmu_tx_t *tx); 297fa9e4066Sahrens void dnode_byteswap(dnode_phys_t *dnp); 298fa9e4066Sahrens void dnode_buf_byteswap(void *buf, size_t size); 299fa9e4066Sahrens void dnode_verify(dnode_t *dn); 300fa9e4066Sahrens int dnode_set_blksz(dnode_t *dn, uint64_t size, int ibs, dmu_tx_t *tx); 301fa9e4066Sahrens void dnode_free_range(dnode_t *dn, uint64_t off, uint64_t len, dmu_tx_t *tx); 302fa9e4066Sahrens void dnode_diduse_space(dnode_t *dn, int64_t space); 303fa9e4066Sahrens void dnode_willuse_space(dnode_t *dn, int64_t space, dmu_tx_t *tx); 3048346f03fSJonathan W Adams void dnode_new_blkid(dnode_t *dn, uint64_t blkid, dmu_tx_t *tx, boolean_t); 305fa9e4066Sahrens uint64_t dnode_block_freed(dnode_t *dn, uint64_t blkid); 306fa9e4066Sahrens void dnode_init(void); 307fa9e4066Sahrens void dnode_fini(void); 308cdb0ab79Smaybee int dnode_next_offset(dnode_t *dn, int flags, uint64_t *off, 309cdb0ab79Smaybee int minlvl, uint64_t blkfill, uint64_t txg); 3101934e92fSmaybee void dnode_evict_dbufs(dnode_t *dn); 311cd485b49SJustin T. Gibbs void dnode_evict_bonus(dnode_t *dn); 312fa9e4066Sahrens 313cb92f413SAlexander Motin #define DNODE_IS_CACHEABLE(_dn) \ 314cb92f413SAlexander Motin ((_dn)->dn_objset->os_primary_cache == ZFS_CACHE_ALL || \ 315cb92f413SAlexander Motin (DMU_OT_IS_METADATA((_dn)->dn_type) && \ 316cb92f413SAlexander Motin (_dn)->dn_objset->os_primary_cache == ZFS_CACHE_METADATA)) 317cb92f413SAlexander Motin 318cb92f413SAlexander Motin #define DNODE_META_IS_CACHEABLE(_dn) \ 319cb92f413SAlexander Motin ((_dn)->dn_objset->os_primary_cache == ZFS_CACHE_ALL || \ 320cb92f413SAlexander Motin (_dn)->dn_objset->os_primary_cache == ZFS_CACHE_METADATA) 321cb92f413SAlexander Motin 322fa9e4066Sahrens #ifdef ZFS_DEBUG 323fa9e4066Sahrens 324fa9e4066Sahrens /* 325fa9e4066Sahrens * There should be a ## between the string literal and fmt, to make it 326fa9e4066Sahrens * clear that we're joining two strings together, but that piece of shit 327fa9e4066Sahrens * gcc doesn't support that preprocessor token. 328fa9e4066Sahrens */ 329fa9e4066Sahrens #define dprintf_dnode(dn, fmt, ...) do { \ 330fa9e4066Sahrens if (zfs_flags & ZFS_DEBUG_DPRINTF) { \ 331fa9e4066Sahrens char __db_buf[32]; \ 332fa9e4066Sahrens uint64_t __db_obj = (dn)->dn_object; \ 333fa9e4066Sahrens if (__db_obj == DMU_META_DNODE_OBJECT) \ 334fa9e4066Sahrens (void) strcpy(__db_buf, "mdn"); \ 335fa9e4066Sahrens else \ 336fa9e4066Sahrens (void) snprintf(__db_buf, sizeof (__db_buf), "%lld", \ 337fa9e4066Sahrens (u_longlong_t)__db_obj);\ 338fa9e4066Sahrens dprintf_ds((dn)->dn_objset->os_dsl_dataset, "obj=%s " fmt, \ 339fa9e4066Sahrens __db_buf, __VA_ARGS__); \ 340fa9e4066Sahrens } \ 341fa9e4066Sahrens _NOTE(CONSTCOND) } while (0) 342fa9e4066Sahrens 3439c9dc39aSek110237 #define DNODE_VERIFY(dn) dnode_verify(dn) 3449c9dc39aSek110237 #define FREE_VERIFY(db, start, end, tx) free_verify(db, start, end, tx) 3459c9dc39aSek110237 346fa9e4066Sahrens #else 347fa9e4066Sahrens 348fa9e4066Sahrens #define dprintf_dnode(db, fmt, ...) 3499c9dc39aSek110237 #define DNODE_VERIFY(dn) 3509c9dc39aSek110237 #define FREE_VERIFY(db, start, end, tx) 351fa9e4066Sahrens 352fa9e4066Sahrens #endif 353fa9e4066Sahrens 354fa9e4066Sahrens #ifdef __cplusplus 355fa9e4066Sahrens } 356fa9e4066Sahrens #endif 357fa9e4066Sahrens 358fa9e4066Sahrens #endif /* _SYS_DNODE_H */ 359