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ddt: typedef ddt_type and ddt_class

Browse Source 
Mostly for consistency, so the reader is less likely to wonder why these
things look different.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Rob Norris <rob.norris@klarasystems.com>
Sponsored-by: Klara, Inc.
Sponsored-by: iXsystems, Inc.
Closes #15887
This commit is contained in:
Rob Norris 2023-07-03 12:32:53 +10:00 committed by Brian Behlendorf
parent 8e414fcdf4
commit c8f694fe39
6 changed files with 63 additions and 56 deletions
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6
cmd/zdb/zdb.c
View File

@ -1905,7 +1905,7 @@ dump_dedup_ratio(const ddt_stat_t *dds)
} }
static void static void
dump_ddt(ddt_t *ddt, enum ddt_type type, enum ddt_class class) dump_ddt(ddt_t *ddt, ddt_type_t type, ddt_class_t class)
{ {
char name[DDT_NAMELEN]; char name[DDT_NAMELEN];
ddt_entry_t dde; ddt_entry_t dde;
@ -1965,8 +1965,8 @@ dump_all_ddts(spa_t *spa)
for (enum zio_checksum c = 0; c < ZIO_CHECKSUM_FUNCTIONS; c++) { for (enum zio_checksum c = 0; c < ZIO_CHECKSUM_FUNCTIONS; c++) {
ddt_t *ddt = spa->spa_ddt[c]; ddt_t *ddt = spa->spa_ddt[c];
for (enum ddt_type type = 0; type < DDT_TYPES; type++) { for (ddt_type_t type = 0; type < DDT_TYPES; type++) {
for (enum ddt_class class = 0; class < DDT_CLASSES; for (ddt_class_t class = 0; class < DDT_CLASSES;
class++) { class++) {
dump_ddt(ddt, type, class); dump_ddt(ddt, type, class);
} }

23
include/sys/ddt.h
View File

@ -41,22 +41,29 @@ struct abd;
/* /*
* On-disk DDT formats, in the desired search order (newest version first). * On-disk DDT formats, in the desired search order (newest version first).
*/ */
enum ddt_type { typedef enum {
DDT_TYPE_ZAP = 0, DDT_TYPE_ZAP = 0,
DDT_TYPES DDT_TYPES
}; } ddt_type_t;
_Static_assert(DDT_TYPES <= UINT8_MAX,
"ddt_type_t must fit in a uint8_t");
/* New and updated entries recieve this type, see ddt_sync_entry() */
#define DDT_TYPE_DEFAULT (DDT_TYPE_ZAP)
/* /*
* DDT classes, in the desired search order (highest replication level first). * DDT classes, in the desired search order (highest replication level first).
*/ */
enum ddt_class { typedef enum {
DDT_CLASS_DITTO = 0, DDT_CLASS_DITTO = 0,
DDT_CLASS_DUPLICATE, DDT_CLASS_DUPLICATE,
DDT_CLASS_UNIQUE, DDT_CLASS_UNIQUE,
DDT_CLASSES DDT_CLASSES
}; } ddt_class_t;
#define DDT_TYPE_CURRENT 0 _Static_assert(DDT_CLASSES < UINT8_MAX,
"ddt_class_t must fit in a uint8_t");
/* /*
* On-disk ddt entry: key (name) and physical storage (value). * On-disk ddt entry: key (name) and physical storage (value).
@ -116,8 +123,8 @@ struct ddt_entry {
ddt_phys_t dde_phys[DDT_PHYS_TYPES]; ddt_phys_t dde_phys[DDT_PHYS_TYPES];
zio_t *dde_lead_zio[DDT_PHYS_TYPES]; zio_t *dde_lead_zio[DDT_PHYS_TYPES];
struct abd *dde_repair_abd; struct abd *dde_repair_abd;
enum ddt_type dde_type; ddt_type_t dde_type;
enum ddt_class dde_class; ddt_class_t dde_class;
uint8_t dde_loading; uint8_t dde_loading;
uint8_t dde_loaded; uint8_t dde_loaded;
kcondvar_t dde_cv; kcondvar_t dde_cv;
@ -182,7 +189,7 @@ extern ddt_entry_t *ddt_lookup(ddt_t *ddt, const blkptr_t *bp, boolean_t add);
extern void ddt_prefetch(spa_t *spa, const blkptr_t *bp); extern void ddt_prefetch(spa_t *spa, const blkptr_t *bp);
extern void ddt_remove(ddt_t *ddt, ddt_entry_t *dde); extern void ddt_remove(ddt_t *ddt, ddt_entry_t *dde);
extern boolean_t ddt_class_contains(spa_t *spa, enum ddt_class max_class, extern boolean_t ddt_class_contains(spa_t *spa, ddt_class_t max_class,
const blkptr_t *bp); const blkptr_t *bp);
extern ddt_entry_t *ddt_repair_start(ddt_t *ddt, const blkptr_t *bp); extern ddt_entry_t *ddt_repair_start(ddt_t *ddt, const blkptr_t *bp);

16
include/sys/ddt_impl.h
View File

@ -70,14 +70,14 @@ extern void ddt_key_fill(ddt_key_t *ddk, const blkptr_t *bp);
extern void ddt_stat_add(ddt_stat_t *dst, const ddt_stat_t *src, uint64_t neg); extern void ddt_stat_add(ddt_stat_t *dst, const ddt_stat_t *src, uint64_t neg);
extern void ddt_object_name(ddt_t *ddt, enum ddt_type type, extern void ddt_object_name(ddt_t *ddt, ddt_type_t type, ddt_class_t clazz,
enum ddt_class clazz, char *name); char *name);
extern int ddt_object_walk(ddt_t *ddt, enum ddt_type type, extern int ddt_object_walk(ddt_t *ddt, ddt_type_t type, ddt_class_t clazz,
enum ddt_class clazz, uint64_t *walk, ddt_entry_t *dde); uint64_t *walk, ddt_entry_t *dde);
extern int ddt_object_count(ddt_t *ddt, enum ddt_type type, extern int ddt_object_count(ddt_t *ddt, ddt_type_t type, ddt_class_t clazz,
enum ddt_class clazz, uint64_t *count); uint64_t *count);
extern int ddt_object_info(ddt_t *ddt, enum ddt_type type, extern int ddt_object_info(ddt_t *ddt, ddt_type_t type, ddt_class_t clazz,
enum ddt_class clazz, dmu_object_info_t *); dmu_object_info_t *);
#ifdef __cplusplus #ifdef __cplusplus
} }

62
module/zfs/ddt.c
View File

@ -58,7 +58,7 @@ static const char *const ddt_class_name[DDT_CLASSES] = {
}; };
static void static void
ddt_object_create(ddt_t *ddt, enum ddt_type type, enum ddt_class class, ddt_object_create(ddt_t *ddt, ddt_type_t type, ddt_class_t class,
dmu_tx_t *tx) dmu_tx_t *tx)
{ {
spa_t *spa = ddt->ddt_spa; spa_t *spa = ddt->ddt_spa;
@ -83,7 +83,7 @@ ddt_object_create(ddt_t *ddt, enum ddt_type type, enum ddt_class class,
} }
static void static void
ddt_object_destroy(ddt_t *ddt, enum ddt_type type, enum ddt_class class, ddt_object_destroy(ddt_t *ddt, ddt_type_t type, ddt_class_t class,
dmu_tx_t *tx) dmu_tx_t *tx)
{ {
spa_t *spa = ddt->ddt_spa; spa_t *spa = ddt->ddt_spa;
@ -107,7 +107,7 @@ ddt_object_destroy(ddt_t *ddt, enum ddt_type type, enum ddt_class class,
} }
static int static int
ddt_object_load(ddt_t *ddt, enum ddt_type type, enum ddt_class class) ddt_object_load(ddt_t *ddt, ddt_type_t type, ddt_class_t class)
{ {
ddt_object_t *ddo = &ddt->ddt_object_stats[type][class]; ddt_object_t *ddo = &ddt->ddt_object_stats[type][class];
dmu_object_info_t doi; dmu_object_info_t doi;
@ -147,7 +147,7 @@ ddt_object_load(ddt_t *ddt, enum ddt_type type, enum ddt_class class)
} }
static void static void
ddt_object_sync(ddt_t *ddt, enum ddt_type type, enum ddt_class class, ddt_object_sync(ddt_t *ddt, ddt_type_t type, ddt_class_t class,
dmu_tx_t *tx) dmu_tx_t *tx)
{ {
ddt_object_t *ddo = &ddt->ddt_object_stats[type][class]; ddt_object_t *ddo = &ddt->ddt_object_stats[type][class];
@ -173,13 +173,13 @@ ddt_object_sync(ddt_t *ddt, enum ddt_type type, enum ddt_class class,
} }
static boolean_t static boolean_t
ddt_object_exists(ddt_t *ddt, enum ddt_type type, enum ddt_class class) ddt_object_exists(ddt_t *ddt, ddt_type_t type, ddt_class_t class)
{ {
return (!!ddt->ddt_object[type][class]); return (!!ddt->ddt_object[type][class]);
} }
static int static int
ddt_object_lookup(ddt_t *ddt, enum ddt_type type, enum ddt_class class, ddt_object_lookup(ddt_t *ddt, ddt_type_t type, ddt_class_t class,
ddt_entry_t *dde) ddt_entry_t *dde)
{ {
if (!ddt_object_exists(ddt, type, class)) if (!ddt_object_exists(ddt, type, class))
@ -190,7 +190,7 @@ ddt_object_lookup(ddt_t *ddt, enum ddt_type type, enum ddt_class class,
} }
static void static void
ddt_object_prefetch(ddt_t *ddt, enum ddt_type type, enum ddt_class class, ddt_object_prefetch(ddt_t *ddt, ddt_type_t type, ddt_class_t class,
ddt_entry_t *dde) ddt_entry_t *dde)
{ {
if (!ddt_object_exists(ddt, type, class)) if (!ddt_object_exists(ddt, type, class))
@ -201,7 +201,7 @@ ddt_object_prefetch(ddt_t *ddt, enum ddt_type type, enum ddt_class class,
} }
static int static int
ddt_object_update(ddt_t *ddt, enum ddt_type type, enum ddt_class class, ddt_object_update(ddt_t *ddt, ddt_type_t type, ddt_class_t class,
ddt_entry_t *dde, dmu_tx_t *tx) ddt_entry_t *dde, dmu_tx_t *tx)
{ {
ASSERT(ddt_object_exists(ddt, type, class)); ASSERT(ddt_object_exists(ddt, type, class));
@ -211,7 +211,7 @@ ddt_object_update(ddt_t *ddt, enum ddt_type type, enum ddt_class class,
} }
static int static int
ddt_object_remove(ddt_t *ddt, enum ddt_type type, enum ddt_class class, ddt_object_remove(ddt_t *ddt, ddt_type_t type, ddt_class_t class,
ddt_entry_t *dde, dmu_tx_t *tx) ddt_entry_t *dde, dmu_tx_t *tx)
{ {
ASSERT(ddt_object_exists(ddt, type, class)); ASSERT(ddt_object_exists(ddt, type, class));
@ -221,7 +221,7 @@ ddt_object_remove(ddt_t *ddt, enum ddt_type type, enum ddt_class class,
} }
int int
ddt_object_walk(ddt_t *ddt, enum ddt_type type, enum ddt_class class, ddt_object_walk(ddt_t *ddt, ddt_type_t type, ddt_class_t class,
uint64_t *walk, ddt_entry_t *dde) uint64_t *walk, ddt_entry_t *dde)
{ {
ASSERT(ddt_object_exists(ddt, type, class)); ASSERT(ddt_object_exists(ddt, type, class));
@ -231,7 +231,7 @@ ddt_object_walk(ddt_t *ddt, enum ddt_type type, enum ddt_class class,
} }
int int
ddt_object_count(ddt_t *ddt, enum ddt_type type, enum ddt_class class, ddt_object_count(ddt_t *ddt, ddt_type_t type, ddt_class_t class,
uint64_t *count) uint64_t *count)
{ {
ASSERT(ddt_object_exists(ddt, type, class)); ASSERT(ddt_object_exists(ddt, type, class));
@ -241,7 +241,7 @@ ddt_object_count(ddt_t *ddt, enum ddt_type type, enum ddt_class class,
} }
int int
ddt_object_info(ddt_t *ddt, enum ddt_type type, enum ddt_class class, ddt_object_info(ddt_t *ddt, ddt_type_t type, ddt_class_t class,
dmu_object_info_t *doi) dmu_object_info_t *doi)
{ {
if (!ddt_object_exists(ddt, type, class)) if (!ddt_object_exists(ddt, type, class))
@ -252,7 +252,7 @@ ddt_object_info(ddt_t *ddt, enum ddt_type type, enum ddt_class class,
} }
void void
ddt_object_name(ddt_t *ddt, enum ddt_type type, enum ddt_class class, ddt_object_name(ddt_t *ddt, ddt_type_t type, ddt_class_t class,
char *name) char *name)
{ {
(void) snprintf(name, DDT_NAMELEN, DMU_POOL_DDT, (void) snprintf(name, DDT_NAMELEN, DMU_POOL_DDT,
@ -460,8 +460,8 @@ ddt_lookup(ddt_t *ddt, const blkptr_t *bp, boolean_t add)
{ {
ddt_key_t search; ddt_key_t search;
ddt_entry_t *dde; ddt_entry_t *dde;
enum ddt_type type; ddt_type_t type;
enum ddt_class class; ddt_class_t class;
avl_index_t where; avl_index_t where;
int error; int error;
@ -536,8 +536,8 @@ ddt_prefetch(spa_t *spa, const blkptr_t *bp)
ddt = ddt_select(spa, bp); ddt = ddt_select(spa, bp);
ddt_key_fill(&dde.dde_key, bp); ddt_key_fill(&dde.dde_key, bp);
for (enum ddt_type type = 0; type < DDT_TYPES; type++) { for (ddt_type_t type = 0; type < DDT_TYPES; type++) {
for (enum ddt_class class = 0; class < DDT_CLASSES; class++) { for (ddt_class_t class = 0; class < DDT_CLASSES; class++) {
ddt_object_prefetch(ddt, type, class, &dde); ddt_object_prefetch(ddt, type, class, &dde);
} }
} }
@ -625,8 +625,8 @@ ddt_load(spa_t *spa)
for (enum zio_checksum c = 0; c < ZIO_CHECKSUM_FUNCTIONS; c++) { for (enum zio_checksum c = 0; c < ZIO_CHECKSUM_FUNCTIONS; c++) {
ddt_t *ddt = spa->spa_ddt[c]; ddt_t *ddt = spa->spa_ddt[c];
for (enum ddt_type type = 0; type < DDT_TYPES; type++) { for (ddt_type_t type = 0; type < DDT_TYPES; type++) {
for (enum ddt_class class = 0; class < DDT_CLASSES; for (ddt_class_t class = 0; class < DDT_CLASSES;
class++) { class++) {
error = ddt_object_load(ddt, type, class); error = ddt_object_load(ddt, type, class);
if (error != 0 && error != ENOENT) if (error != 0 && error != ENOENT)
@ -657,7 +657,7 @@ ddt_unload(spa_t *spa)
} }
boolean_t boolean_t
ddt_class_contains(spa_t *spa, enum ddt_class max_class, const blkptr_t *bp) ddt_class_contains(spa_t *spa, ddt_class_t max_class, const blkptr_t *bp)
{ {
ddt_t *ddt; ddt_t *ddt;
ddt_entry_t *dde; ddt_entry_t *dde;
@ -673,8 +673,8 @@ ddt_class_contains(spa_t *spa, enum ddt_class max_class, const blkptr_t *bp)
ddt_key_fill(&(dde->dde_key), bp); ddt_key_fill(&(dde->dde_key), bp);
for (enum ddt_type type = 0; type < DDT_TYPES; type++) { for (ddt_type_t type = 0; type < DDT_TYPES; type++) {
for (enum ddt_class class = 0; class <= max_class; class++) { for (ddt_class_t class = 0; class <= max_class; class++) {
if (ddt_object_lookup(ddt, type, class, dde) == 0) { if (ddt_object_lookup(ddt, type, class, dde) == 0) {
kmem_cache_free(ddt_entry_cache, dde); kmem_cache_free(ddt_entry_cache, dde);
return (B_TRUE); return (B_TRUE);
@ -696,8 +696,8 @@ ddt_repair_start(ddt_t *ddt, const blkptr_t *bp)
dde = ddt_alloc(&ddk); dde = ddt_alloc(&ddk);
for (enum ddt_type type = 0; type < DDT_TYPES; type++) { for (ddt_type_t type = 0; type < DDT_TYPES; type++) {
for (enum ddt_class class = 0; class < DDT_CLASSES; class++) { for (ddt_class_t class = 0; class < DDT_CLASSES; class++) {
/* /*
* We can only do repair if there are multiple copies * We can only do repair if there are multiple copies
* of the block. For anything in the UNIQUE class, * of the block. For anything in the UNIQUE class,
@ -796,10 +796,10 @@ ddt_sync_entry(ddt_t *ddt, ddt_entry_t *dde, dmu_tx_t *tx, uint64_t txg)
dsl_pool_t *dp = ddt->ddt_spa->spa_dsl_pool; dsl_pool_t *dp = ddt->ddt_spa->spa_dsl_pool;
ddt_phys_t *ddp = dde->dde_phys; ddt_phys_t *ddp = dde->dde_phys;
ddt_key_t *ddk = &dde->dde_key; ddt_key_t *ddk = &dde->dde_key;
enum ddt_type otype = dde->dde_type; ddt_type_t otype = dde->dde_type;
enum ddt_type ntype = DDT_TYPE_CURRENT; ddt_type_t ntype = DDT_TYPE_DEFAULT;
enum ddt_class oclass = dde->dde_class; ddt_class_t oclass = dde->dde_class;
enum ddt_class nclass; ddt_class_t nclass;
uint64_t total_refcnt = 0; uint64_t total_refcnt = 0;
ASSERT(dde->dde_loaded); ASSERT(dde->dde_loaded);
@ -883,9 +883,9 @@ ddt_sync_table(ddt_t *ddt, dmu_tx_t *tx, uint64_t txg)
ddt_free(dde); ddt_free(dde);
} }
for (enum ddt_type type = 0; type < DDT_TYPES; type++) { for (ddt_type_t type = 0; type < DDT_TYPES; type++) {
uint64_t add, count = 0; uint64_t add, count = 0;
for (enum ddt_class class = 0; class < DDT_CLASSES; class++) { for (ddt_class_t class = 0; class < DDT_CLASSES; class++) {
if (ddt_object_exists(ddt, type, class)) { if (ddt_object_exists(ddt, type, class)) {
ddt_object_sync(ddt, type, class, tx); ddt_object_sync(ddt, type, class, tx);
VERIFY0(ddt_object_count(ddt, type, class, VERIFY0(ddt_object_count(ddt, type, class,
@ -893,7 +893,7 @@ ddt_sync_table(ddt_t *ddt, dmu_tx_t *tx, uint64_t txg)
count += add; count += add;
} }
} }
for (enum ddt_class class = 0; class < DDT_CLASSES; class++) { for (ddt_class_t class = 0; class < DDT_CLASSES; class++) {
if (count == 0 && ddt_object_exists(ddt, type, class)) if (count == 0 && ddt_object_exists(ddt, type, class))
ddt_object_destroy(ddt, type, class, tx); ddt_object_destroy(ddt, type, class, tx);
} }

8
module/zfs/ddt_stats.c
View File

@ -132,8 +132,8 @@ ddt_get_dedup_object_stats(spa_t *spa, ddt_object_t *ddo_total)
/* Sum the statistics we cached in ddt_object_sync(). */ /* Sum the statistics we cached in ddt_object_sync(). */
for (enum zio_checksum c = 0; c < ZIO_CHECKSUM_FUNCTIONS; c++) { for (enum zio_checksum c = 0; c < ZIO_CHECKSUM_FUNCTIONS; c++) {
ddt_t *ddt = spa->spa_ddt[c]; ddt_t *ddt = spa->spa_ddt[c];
for (enum ddt_type type = 0; type < DDT_TYPES; type++) { for (ddt_type_t type = 0; type < DDT_TYPES; type++) {
for (enum ddt_class class = 0; class < DDT_CLASSES; for (ddt_class_t class = 0; class < DDT_CLASSES;
class++) { class++) {
ddt_object_t *ddo = ddt_object_t *ddo =
&ddt->ddt_object_stats[type][class]; &ddt->ddt_object_stats[type][class];
@ -156,8 +156,8 @@ ddt_get_dedup_histogram(spa_t *spa, ddt_histogram_t *ddh)
{ {
for (enum zio_checksum c = 0; c < ZIO_CHECKSUM_FUNCTIONS; c++) { for (enum zio_checksum c = 0; c < ZIO_CHECKSUM_FUNCTIONS; c++) {
ddt_t *ddt = spa->spa_ddt[c]; ddt_t *ddt = spa->spa_ddt[c];
for (enum ddt_type type = 0; type < DDT_TYPES && ddt; type++) { for (ddt_type_t type = 0; type < DDT_TYPES && ddt; type++) {
for (enum ddt_class class = 0; class < DDT_CLASSES; for (ddt_class_t class = 0; class < DDT_CLASSES;
class++) { class++) {
ddt_histogram_add(ddh, ddt_histogram_add(ddh,
&ddt->ddt_histogram_cache[type][class]); &ddt->ddt_histogram_cache[type][class]);

4
module/zfs/dsl_scan.c
View File

@ -203,7 +203,7 @@ static uint_t zfs_scan_checkpoint_intval = 7200; /* in seconds */
int zfs_scan_suspend_progress = 0; /* set to prevent scans from progressing */ int zfs_scan_suspend_progress = 0; /* set to prevent scans from progressing */
static int zfs_no_scrub_io = B_FALSE; /* set to disable scrub i/o */ static int zfs_no_scrub_io = B_FALSE; /* set to disable scrub i/o */
static int zfs_no_scrub_prefetch = B_FALSE; /* set to disable scrub prefetch */ static int zfs_no_scrub_prefetch = B_FALSE; /* set to disable scrub prefetch */
static const enum ddt_class zfs_scrub_ddt_class_max = DDT_CLASS_DUPLICATE; static const ddt_class_t zfs_scrub_ddt_class_max = DDT_CLASS_DUPLICATE;
/* max number of blocks to free in a single TXG */ /* max number of blocks to free in a single TXG */
static uint64_t zfs_async_block_max_blocks = UINT64_MAX; static uint64_t zfs_async_block_max_blocks = UINT64_MAX;
/* max number of dedup blocks to free in a single TXG */ /* max number of dedup blocks to free in a single TXG */
@ -2962,7 +2962,7 @@ dsl_scan_ddt_entry(dsl_scan_t *scn, enum zio_checksum checksum,
* If there are N references to a deduped block, we don't want to scrub it * If there are N references to a deduped block, we don't want to scrub it
* N times -- ideally, we should scrub it exactly once. * N times -- ideally, we should scrub it exactly once.
* *
* We leverage the fact that the dde's replication class (enum ddt_class) * We leverage the fact that the dde's replication class (ddt_class_t)
* is ordered from highest replication class (DDT_CLASS_DITTO) to lowest * is ordered from highest replication class (DDT_CLASS_DITTO) to lowest
* (DDT_CLASS_UNIQUE) so that we may walk the DDT in that order. * (DDT_CLASS_UNIQUE) so that we may walk the DDT in that order.
* *