*/
/*
* Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
- * Copyright (c) 2011, 2014 by Delphix. All rights reserved.
+ * Copyright (c) 2011, 2017 by Delphix. All rights reserved.
* Copyright 2011 Nexenta Systems, Inc. All rights reserved.
* Copyright (c) 2012, Joyent, Inc. All rights reserved.
* Copyright 2014 HybridCluster. All rights reserved.
* Copyright (c) 2014 Spectra Logic Corporation, All rights reserved.
+ * Copyright 2013 Saso Kiselkov. All rights reserved.
*/
/* Portions Copyright 2010 Robert Milkowski */
#include <sys/inttypes.h>
#include <sys/cred.h>
#include <sys/fs/zfs.h>
+#include <sys/zio_compress.h>
+#include <sys/zio_priority.h>
#include <sys/uio.h>
#ifdef __cplusplus
typedef struct objset objset_t;
typedef struct dmu_tx dmu_tx_t;
typedef struct dsl_dir dsl_dir_t;
+typedef struct dnode dnode_t;
typedef enum dmu_object_byteswap {
DMU_BSWAP_UINT8,
DMU_OTN_ZAP_METADATA = DMU_OT(DMU_BSWAP_ZAP, B_TRUE),
} dmu_object_type_t;
-typedef enum txg_how {
- TXG_WAIT = 1,
- TXG_NOWAIT,
- TXG_WAITED,
-} txg_how_t;
+/*
+ * These flags are intended to be used to specify the "txg_how"
+ * parameter when calling the dmu_tx_assign() function. See the comment
+ * above dmu_tx_assign() for more details on the meaning of these flags.
+ */
+#define TXG_NOWAIT (0ULL)
+#define TXG_WAIT (1ULL<<0)
+#define TXG_NOTHROTTLE (1ULL<<1)
void byteswap_uint64_array(void *buf, size_t size);
void byteswap_uint32_array(void *buf, size_t size);
#define DS_FIND_SNAPSHOTS (1<<0)
#define DS_FIND_CHILDREN (1<<1)
+#define DS_FIND_SERIALIZE (1<<2)
/*
* The maximum number of bytes that can be accessed as part of one
* operation, including metadata.
*/
-#define DMU_MAX_ACCESS (10<<20) /* 10MB */
+#define DMU_MAX_ACCESS (64 * 1024 * 1024) /* 64MB */
#define DMU_MAX_DELETEBLKCNT (20480) /* ~5MB of indirect blocks */
#define DMU_USERUSED_OBJECT (-1ULL)
#define DMU_GROUPUSED_OBJECT (-2ULL)
+/*
+ * Zap prefix for object accounting in DMU_{USER,GROUP}USED_OBJECT.
+ */
+#define DMU_OBJACCT_PREFIX "obj-"
+#define DMU_OBJACCT_PREFIX_LEN 4
+
/*
* artificial blkids for bonus buffer and spill blocks
*/
#define DMU_POOL_FREE_BPOBJ "free_bpobj"
#define DMU_POOL_BPTREE_OBJ "bptree_obj"
#define DMU_POOL_EMPTY_BPOBJ "empty_bpobj"
+#define DMU_POOL_CHECKSUM_SALT "org.illumos:checksum_salt"
+#define DMU_POOL_VDEV_ZAP_MAP "com.delphix:vdev_zap_map"
/*
* Allocate an object from this objset. The range of object numbers
*/
uint64_t dmu_object_alloc(objset_t *os, dmu_object_type_t ot,
int blocksize, dmu_object_type_t bonus_type, int bonus_len, dmu_tx_t *tx);
+uint64_t dmu_object_alloc_dnsize(objset_t *os, dmu_object_type_t ot,
+ int blocksize, dmu_object_type_t bonus_type, int bonus_len,
+ int dnodesize, dmu_tx_t *tx);
int dmu_object_claim(objset_t *os, uint64_t object, dmu_object_type_t ot,
int blocksize, dmu_object_type_t bonus_type, int bonus_len, dmu_tx_t *tx);
+int dmu_object_claim_dnsize(objset_t *os, uint64_t object, dmu_object_type_t ot,
+ int blocksize, dmu_object_type_t bonus_type, int bonus_len,
+ int dnodesize, dmu_tx_t *tx);
int dmu_object_reclaim(objset_t *os, uint64_t object, dmu_object_type_t ot,
int blocksize, dmu_object_type_t bonustype, int bonuslen, dmu_tx_t *txp);
+int dmu_object_reclaim_dnsize(objset_t *os, uint64_t object,
+ dmu_object_type_t ot, int blocksize, dmu_object_type_t bonustype,
+ int bonuslen, int dnodesize, dmu_tx_t *txp);
/*
* Free an object from this objset.
#define WP_DMU_SYNC 0x2
#define WP_SPILL 0x4
-void dmu_write_policy(objset_t *os, struct dnode *dn, int level, int wp,
+void dmu_write_policy(objset_t *os, dnode_t *dn, int level, int wp,
struct zio_prop *zp);
/*
* The bonus data is accessed more or less like a regular buffer.
*/
int dmu_spill_hold_by_bonus(dmu_buf_t *bonus, void *tag, dmu_buf_t **dbp);
-int dmu_spill_hold_by_dnode(struct dnode *dn, uint32_t flags,
+int dmu_spill_hold_by_dnode(dnode_t *dn, uint32_t flags,
void *tag, dmu_buf_t **dbp);
int dmu_spill_hold_existing(dmu_buf_t *bonus, void *tag, dmu_buf_t **dbp);
*/
int dmu_buf_hold(objset_t *os, uint64_t object, uint64_t offset,
void *tag, dmu_buf_t **, int flags);
+int dmu_buf_hold_by_dnode(dnode_t *dn, uint64_t offset,
+ void *tag, dmu_buf_t **dbp, int flags);
/*
* Add a reference to a dmu buffer that has already been held via
* individually with dmu_buf_rele.
*/
int dmu_buf_hold_array_by_bonus(dmu_buf_t *db, uint64_t offset,
- uint64_t length, int read, void *tag, int *numbufsp, dmu_buf_t ***dbpp);
+ uint64_t length, boolean_t read, void *tag,
+ int *numbufsp, dmu_buf_t ***dbpp);
void dmu_buf_rele_array(dmu_buf_t **, int numbufs, void *tag);
typedef void dmu_buf_evict_func_t(void *user_ptr);
*/
taskq_ent_t dbu_tqent;
- /* This instance's eviction function pointer. */
- dmu_buf_evict_func_t *dbu_evict_func;
+ /*
+ * This instance's eviction function pointers.
+ *
+ * dbu_evict_func_sync is called synchronously and then
+ * dbu_evict_func_async is executed asynchronously on a taskq.
+ */
+ dmu_buf_evict_func_t *dbu_evict_func_sync;
+ dmu_buf_evict_func_t *dbu_evict_func_async;
#ifdef ZFS_DEBUG
/*
* Pointer to user's dbuf pointer. NULL for clients that do
* NOTE: This function should only be called once on a given dmu_buf_user_t.
* To allow enforcement of this, dbu must already be zeroed on entry.
*/
-#ifdef __lint
-/* Very ugly, but it beats issuing suppression directives in many Makefiles. */
-extern void
-dmu_buf_init_user(dmu_buf_user_t *dbu, dmu_buf_evict_func_t *evict_func,
- dmu_buf_t **clear_on_evict_dbufp);
-#else /* __lint */
+/*ARGSUSED*/
static inline void
-dmu_buf_init_user(dmu_buf_user_t *dbu, dmu_buf_evict_func_t *evict_func,
- dmu_buf_t **clear_on_evict_dbufp)
+dmu_buf_init_user(dmu_buf_user_t *dbu, dmu_buf_evict_func_t *evict_func_sync,
+ dmu_buf_evict_func_t *evict_func_async, dmu_buf_t **clear_on_evict_dbufp)
{
- ASSERT(dbu->dbu_evict_func == NULL);
- ASSERT(evict_func != NULL);
- dbu->dbu_evict_func = evict_func;
+ ASSERT(dbu->dbu_evict_func_sync == NULL);
+ ASSERT(dbu->dbu_evict_func_async == NULL);
+
+ /* must have at least one evict func */
+ IMPLY(evict_func_sync == NULL, evict_func_async != NULL);
+ dbu->dbu_evict_func_sync = evict_func_sync;
+ dbu->dbu_evict_func_async = evict_func_async;
+ taskq_init_ent(&dbu->dbu_tqent);
#ifdef ZFS_DEBUG
dbu->dbu_clear_on_evict_dbufp = clear_on_evict_dbufp;
#endif
}
-#endif /* __lint */
/*
* Attach user data to a dbuf and mark it for normal (when the dbuf's
*/
void *dmu_buf_get_user(dmu_buf_t *db);
+objset_t *dmu_buf_get_objset(dmu_buf_t *db);
+dnode_t *dmu_buf_dnode_enter(dmu_buf_t *db);
+void dmu_buf_dnode_exit(dmu_buf_t *db);
+
/* Block until any in-progress dmu buf user evictions complete. */
void dmu_buf_user_evict_wait(void);
*/
void dmu_buf_will_dirty(dmu_buf_t *db, dmu_tx_t *tx);
-/*
- * Tells if the given dbuf is freeable.
- */
-boolean_t dmu_buf_freeable(dmu_buf_t *);
-
/*
* You must create a transaction, then hold the objects which you will
* (or might) modify as part of this transaction. Then you must assign
dmu_tx_t *dmu_tx_create(objset_t *os);
void dmu_tx_hold_write(dmu_tx_t *tx, uint64_t object, uint64_t off, int len);
+void dmu_tx_hold_write_by_dnode(dmu_tx_t *tx, dnode_t *dn, uint64_t off,
+ int len);
void dmu_tx_hold_free(dmu_tx_t *tx, uint64_t object, uint64_t off,
uint64_t len);
+void dmu_tx_hold_free_by_dnode(dmu_tx_t *tx, dnode_t *dn, uint64_t off,
+ uint64_t len);
void dmu_tx_hold_zap(dmu_tx_t *tx, uint64_t object, int add, const char *name);
+void dmu_tx_hold_zap_by_dnode(dmu_tx_t *tx, dnode_t *dn, int add,
+ const char *name);
void dmu_tx_hold_bonus(dmu_tx_t *tx, uint64_t object);
+void dmu_tx_hold_bonus_by_dnode(dmu_tx_t *tx, dnode_t *dn);
void dmu_tx_hold_spill(dmu_tx_t *tx, uint64_t object);
void dmu_tx_hold_sa(dmu_tx_t *tx, struct sa_handle *hdl, boolean_t may_grow);
void dmu_tx_hold_sa_create(dmu_tx_t *tx, int total_size);
void dmu_tx_abort(dmu_tx_t *tx);
-int dmu_tx_assign(dmu_tx_t *tx, enum txg_how txg_how);
+int dmu_tx_assign(dmu_tx_t *tx, uint64_t txg_how);
void dmu_tx_wait(dmu_tx_t *tx);
void dmu_tx_commit(dmu_tx_t *tx);
+void dmu_tx_mark_netfree(dmu_tx_t *tx);
/*
* To register a commit callback, dmu_tx_callback_register() must be called.
* to stable storage and will also be called if the dmu_tx is aborted.
* If there is any error which prevents the transaction from being committed to
* disk, the callback will be called with a value of error != 0.
+ *
+ * When multiple callbacks are registered to the transaction, the callbacks
+ * will be called in reverse order to let Lustre, the only user of commit
+ * callback currently, take the fast path of its commit callback handling.
*/
typedef void dmu_tx_callback_func_t(void *dcb_data, int error);
void dmu_tx_callback_register(dmu_tx_t *tx, dmu_tx_callback_func_t *dcb_func,
void *dcb_data);
+void dmu_tx_do_callbacks(list_t *cb_list, int error);
/*
* Free up the data blocks for a defined range of a file. If size is
#define DMU_READ_NO_PREFETCH 1 /* don't prefetch */
int dmu_read(objset_t *os, uint64_t object, uint64_t offset, uint64_t size,
void *buf, uint32_t flags);
+int dmu_read_by_dnode(dnode_t *dn, uint64_t offset, uint64_t size, void *buf,
+ uint32_t flags);
void dmu_write(objset_t *os, uint64_t object, uint64_t offset, uint64_t size,
const void *buf, dmu_tx_t *tx);
+void dmu_write_by_dnode(dnode_t *dn, uint64_t offset, uint64_t size,
+ const void *buf, dmu_tx_t *tx);
void dmu_prealloc(objset_t *os, uint64_t object, uint64_t offset, uint64_t size,
dmu_tx_t *tx);
#ifdef _KERNEL
#include <linux/blkdev_compat.h>
-int dmu_read_req(objset_t *os, uint64_t object, struct request *req);
-int dmu_write_req(objset_t *os, uint64_t object, struct request *req,
- dmu_tx_t *tx);
int dmu_read_uio(objset_t *os, uint64_t object, struct uio *uio, uint64_t size);
+int dmu_read_uio_dbuf(dmu_buf_t *zdb, struct uio *uio, uint64_t size);
+int dmu_read_uio_dnode(dnode_t *dn, struct uio *uio, uint64_t size);
int dmu_write_uio(objset_t *os, uint64_t object, struct uio *uio, uint64_t size,
dmu_tx_t *tx);
int dmu_write_uio_dbuf(dmu_buf_t *zdb, struct uio *uio, uint64_t size,
dmu_tx_t *tx);
+int dmu_write_uio_dnode(dnode_t *dn, struct uio *uio, uint64_t size,
+ dmu_tx_t *tx);
#endif
struct arc_buf *dmu_request_arcbuf(dmu_buf_t *handle, int size);
void dmu_return_arcbuf(struct arc_buf *buf);
void dmu_assign_arcbuf(dmu_buf_t *handle, uint64_t offset, struct arc_buf *buf,
dmu_tx_t *tx);
+#ifdef HAVE_UIO_ZEROCOPY
int dmu_xuio_init(struct xuio *uio, int niov);
void dmu_xuio_fini(struct xuio *uio);
int dmu_xuio_add(struct xuio *uio, struct arc_buf *abuf, offset_t off,
int dmu_xuio_cnt(struct xuio *uio);
struct arc_buf *dmu_xuio_arcbuf(struct xuio *uio, int i);
void dmu_xuio_clear(struct xuio *uio, int i);
+#endif /* HAVE_UIO_ZEROCOPY */
void xuio_stat_wbuf_copied(void);
void xuio_stat_wbuf_nocopy(void);
extern int zfs_prefetch_disable;
+extern int zfs_max_recordsize;
/*
* Asynchronously try to read in the data.
*/
-void dmu_prefetch(objset_t *os, uint64_t object, uint64_t offset,
- uint64_t len);
+void dmu_prefetch(objset_t *os, uint64_t object, int64_t level, uint64_t offset,
+ uint64_t len, enum zio_priority pri);
typedef struct dmu_object_info {
/* All sizes are in bytes unless otherwise indicated. */
uint8_t doi_compress;
uint8_t doi_nblkptr;
uint8_t doi_pad[4];
+ uint64_t doi_dnodesize;
uint64_t doi_physical_blocks_512; /* data + metadata, 512b blks */
uint64_t doi_max_offset;
uint64_t doi_fill_count; /* number of non-empty blocks */
int dmu_object_info(objset_t *os, uint64_t object, dmu_object_info_t *doi);
void __dmu_object_info_from_dnode(struct dnode *dn, dmu_object_info_t *doi);
/* Like dmu_object_info, but faster if you have a held dnode in hand. */
-void dmu_object_info_from_dnode(struct dnode *dn, dmu_object_info_t *doi);
+void dmu_object_info_from_dnode(dnode_t *dn, dmu_object_info_t *doi);
/* Like dmu_object_info, but faster if you have a held dbuf in hand. */
void dmu_object_info_from_db(dmu_buf_t *db, dmu_object_info_t *doi);
/*
void dmu_object_size_from_db(dmu_buf_t *db, uint32_t *blksize,
u_longlong_t *nblk512);
+void dmu_object_dnsize_from_db(dmu_buf_t *db, int *dnsize);
+
typedef struct dmu_objset_stats {
uint64_t dds_num_clones; /* number of clones of this */
uint64_t dds_creation_txg;
dmu_objset_type_t dds_type;
uint8_t dds_is_snapshot;
uint8_t dds_inconsistent;
- char dds_origin[MAXNAMELEN];
+ char dds_origin[ZFS_MAX_DATASET_NAME_LEN];
} dmu_objset_stats_t;
/*
/*
* Get the [cm]time for an objset's snapshot dir
*/
-timestruc_t dmu_objset_snap_cmtime(objset_t *os);
+inode_timespec_t dmu_objset_snap_cmtime(objset_t *os);
int dmu_objset_is_snapshot(objset_t *os);
extern void dmu_objset_name(objset_t *os, char *buf);
extern dmu_objset_type_t dmu_objset_type(objset_t *os);
extern uint64_t dmu_objset_id(objset_t *os);
+extern uint64_t dmu_objset_dnodesize(objset_t *os);
extern zfs_sync_type_t dmu_objset_syncprop(objset_t *os);
extern zfs_logbias_op_t dmu_objset_logbias(objset_t *os);
extern int dmu_snapshot_list_next(objset_t *os, int namelen, char *name,
projects / mirror_zfs.git / blobdiff