diff options
Diffstat (limited to 'include/sys/arc.h')
| -rw-r--r-- | include/sys/arc.h | 93 |
1 files changed, 59 insertions, 34 deletions
diff --git a/include/sys/arc.h b/include/sys/arc.h index d8a85e830..13788a9b6 100644 --- a/include/sys/arc.h +++ b/include/sys/arc.h @@ -44,12 +44,24 @@ extern "C" { */ #define ARC_EVICT_ALL -1ULL +#define HDR_SET_LSIZE(hdr, x) do { \ + ASSERT(IS_P2ALIGNED(x, 1U << SPA_MINBLOCKSHIFT)); \ + (hdr)->b_lsize = ((x) >> SPA_MINBLOCKSHIFT); \ +_NOTE(CONSTCOND) } while (0) + +#define HDR_SET_PSIZE(hdr, x) do { \ + ASSERT(IS_P2ALIGNED((x), 1U << SPA_MINBLOCKSHIFT)); \ + (hdr)->b_psize = ((x) >> SPA_MINBLOCKSHIFT); \ +_NOTE(CONSTCOND) } while (0) + +#define HDR_GET_LSIZE(hdr) ((hdr)->b_lsize << SPA_MINBLOCKSHIFT) +#define HDR_GET_PSIZE(hdr) ((hdr)->b_psize << SPA_MINBLOCKSHIFT) + typedef struct arc_buf_hdr arc_buf_hdr_t; typedef struct arc_buf arc_buf_t; typedef struct arc_prune arc_prune_t; typedef void arc_done_func_t(zio_t *zio, arc_buf_t *buf, void *private); typedef void arc_prune_func_t(int64_t bytes, void *private); -typedef int arc_evict_func_t(void *private); /* Shared module parameters */ extern int zfs_arc_average_blocksize; @@ -58,6 +70,8 @@ extern int zfs_arc_average_blocksize; arc_done_func_t arc_bcopy_func; arc_done_func_t arc_getbuf_func; +extern int zfs_arc_num_sublists_per_state; + /* generic arc_prune_func_t wrapper for callbacks */ struct arc_prune { arc_prune_func_t *p_pfunc; @@ -77,37 +91,54 @@ typedef enum arc_flags /* * Public flags that can be passed into the ARC by external consumers. */ - ARC_FLAG_NONE = 1 << 0, /* No flags set */ - ARC_FLAG_WAIT = 1 << 1, /* perform sync I/O */ - ARC_FLAG_NOWAIT = 1 << 2, /* perform async I/O */ - ARC_FLAG_PREFETCH = 1 << 3, /* I/O is a prefetch */ - ARC_FLAG_CACHED = 1 << 4, /* I/O was in cache */ - ARC_FLAG_L2CACHE = 1 << 5, /* cache in L2ARC */ - ARC_FLAG_L2COMPRESS = 1 << 6, /* compress in L2ARC */ - ARC_FLAG_PREDICTIVE_PREFETCH = 1 << 7, /* I/O from zfetch */ + ARC_FLAG_WAIT = 1 << 0, /* perform sync I/O */ + ARC_FLAG_NOWAIT = 1 << 1, /* perform async I/O */ + ARC_FLAG_PREFETCH = 1 << 2, /* I/O is a prefetch */ + ARC_FLAG_CACHED = 1 << 3, /* I/O was in cache */ + ARC_FLAG_L2CACHE = 1 << 4, /* cache in L2ARC */ + ARC_FLAG_PREDICTIVE_PREFETCH = 1 << 5, /* I/O from zfetch */ /* * Private ARC flags. These flags are private ARC only flags that * will show up in b_flags in the arc_hdr_buf_t. These flags should * only be set by ARC code. */ - ARC_FLAG_IN_HASH_TABLE = 1 << 8, /* buffer is hashed */ - ARC_FLAG_IO_IN_PROGRESS = 1 << 9, /* I/O in progress */ - ARC_FLAG_IO_ERROR = 1 << 10, /* I/O failed for buf */ - ARC_FLAG_FREED_IN_READ = 1 << 11, /* freed during read */ - ARC_FLAG_BUF_AVAILABLE = 1 << 12, /* block not in use */ - ARC_FLAG_INDIRECT = 1 << 13, /* indirect block */ + ARC_FLAG_IN_HASH_TABLE = 1 << 6, /* buffer is hashed */ + ARC_FLAG_IO_IN_PROGRESS = 1 << 7, /* I/O in progress */ + ARC_FLAG_IO_ERROR = 1 << 8, /* I/O failed for buf */ + ARC_FLAG_INDIRECT = 1 << 9, /* indirect block */ /* Indicates that block was read with ASYNC priority. */ - ARC_FLAG_PRIO_ASYNC_READ = 1 << 14, - ARC_FLAG_L2_WRITING = 1 << 15, /* write in progress */ - ARC_FLAG_L2_EVICTED = 1 << 16, /* evicted during I/O */ - ARC_FLAG_L2_WRITE_HEAD = 1 << 17, /* head of write list */ + ARC_FLAG_PRIO_ASYNC_READ = 1 << 10, + ARC_FLAG_L2_WRITING = 1 << 11, /* write in progress */ + ARC_FLAG_L2_EVICTED = 1 << 12, /* evicted during I/O */ + ARC_FLAG_L2_WRITE_HEAD = 1 << 13, /* head of write list */ /* indicates that the buffer contains metadata (otherwise, data) */ - ARC_FLAG_BUFC_METADATA = 1 << 18, + ARC_FLAG_BUFC_METADATA = 1 << 14, /* Flags specifying whether optional hdr struct fields are defined */ - ARC_FLAG_HAS_L1HDR = 1 << 19, - ARC_FLAG_HAS_L2HDR = 1 << 20, + ARC_FLAG_HAS_L1HDR = 1 << 15, + ARC_FLAG_HAS_L2HDR = 1 << 16, + + /* + * Indicates the arc_buf_hdr_t's b_pdata matches the on-disk data. + * This allows the l2arc to use the blkptr's checksum to verify + * the data without having to store the checksum in the hdr. + */ + ARC_FLAG_COMPRESSED_ARC = 1 << 17, + ARC_FLAG_SHARED_DATA = 1 << 18, + + /* + * The arc buffer's compression mode is stored in the top 7 bits of the + * flags field, so these dummy flags are included so that MDB can + * interpret the enum properly. + */ + ARC_FLAG_COMPRESS_0 = 1 << 24, + ARC_FLAG_COMPRESS_1 = 1 << 25, + ARC_FLAG_COMPRESS_2 = 1 << 26, + ARC_FLAG_COMPRESS_3 = 1 << 27, + ARC_FLAG_COMPRESS_4 = 1 << 28, + ARC_FLAG_COMPRESS_5 = 1 << 29, + ARC_FLAG_COMPRESS_6 = 1 << 30 } arc_flags_t; @@ -116,11 +147,10 @@ struct arc_buf { arc_buf_t *b_next; kmutex_t b_evict_lock; void *b_data; - arc_evict_func_t *b_efunc; - void *b_private; }; typedef enum arc_buf_contents { + ARC_BUFC_INVALID, /* invalid type */ ARC_BUFC_DATA, /* buffer contains data */ ARC_BUFC_METADATA, /* buffer contains metadata */ ARC_BUFC_NUMTYPES @@ -154,7 +184,7 @@ typedef struct arc_buf_info { arc_state_type_t abi_state_type; arc_buf_contents_t abi_state_contents; uint32_t abi_flags; - uint32_t abi_datacnt; + uint32_t abi_bufcnt; uint64_t abi_size; uint64_t abi_spa; uint64_t abi_access; @@ -171,13 +201,12 @@ typedef struct arc_buf_info { void arc_space_consume(uint64_t space, arc_space_type_t type); void arc_space_return(uint64_t space, arc_space_type_t type); -arc_buf_t *arc_buf_alloc(spa_t *spa, uint64_t size, void *tag, +arc_buf_t *arc_alloc_buf(spa_t *spa, int32_t size, void *tag, arc_buf_contents_t type); arc_buf_t *arc_loan_buf(spa_t *spa, uint64_t size); void arc_return_buf(arc_buf_t *buf, void *tag); void arc_loan_inuse_buf(arc_buf_t *buf, void *tag); -void arc_buf_add_ref(arc_buf_t *buf, void *tag); -boolean_t arc_buf_remove_ref(arc_buf_t *buf, void *tag); +void arc_buf_destroy(arc_buf_t *buf, void *tag); void arc_buf_info(arc_buf_t *buf, arc_buf_info_t *abi, int state_index); uint64_t arc_buf_size(arc_buf_t *buf); void arc_release(arc_buf_t *buf, void *tag); @@ -185,7 +214,6 @@ int arc_released(arc_buf_t *buf); void arc_buf_sigsegv(int sig, siginfo_t *si, void *unused); void arc_buf_freeze(arc_buf_t *buf); void arc_buf_thaw(arc_buf_t *buf); -boolean_t arc_buf_eviction_needed(arc_buf_t *buf); #ifdef ZFS_DEBUG int arc_referenced(arc_buf_t *buf); #endif @@ -194,8 +222,7 @@ int arc_read(zio_t *pio, spa_t *spa, const blkptr_t *bp, arc_done_func_t *done, void *private, zio_priority_t priority, int flags, arc_flags_t *arc_flags, const zbookmark_phys_t *zb); zio_t *arc_write(zio_t *pio, spa_t *spa, uint64_t txg, - blkptr_t *bp, arc_buf_t *buf, boolean_t l2arc, boolean_t l2arc_compress, - const zio_prop_t *zp, + blkptr_t *bp, arc_buf_t *buf, boolean_t l2arc, const zio_prop_t *zp, arc_done_func_t *ready, arc_done_func_t *child_ready, arc_done_func_t *physdone, arc_done_func_t *done, void *private, zio_priority_t priority, int zio_flags, @@ -205,13 +232,11 @@ arc_prune_t *arc_add_prune_callback(arc_prune_func_t *func, void *private); void arc_remove_prune_callback(arc_prune_t *p); void arc_freed(spa_t *spa, const blkptr_t *bp); -void arc_set_callback(arc_buf_t *buf, arc_evict_func_t *func, void *private); -boolean_t arc_clear_callback(arc_buf_t *buf); - void arc_flush(spa_t *spa, boolean_t retry); void arc_tempreserve_clear(uint64_t reserve); int arc_tempreserve_space(uint64_t reserve, uint64_t txg); +uint64_t arc_max_bytes(void); void arc_init(void); void arc_fini(void); |