1293                 break;
1294         case ARC_SPACE_OTHER:
1295                 ARCSTAT_INCR(arcstat_other_size, -space);
1296                 break;
1297         case ARC_SPACE_HDRS:
1298                 ARCSTAT_INCR(arcstat_hdr_size, -space);
1299                 break;
1300         case ARC_SPACE_L2HDRS:
1301                 ARCSTAT_INCR(arcstat_l2_hdr_size, -space);
1302                 break;
1303         }
1304 
1305         ASSERT(arc_meta_used >= space);
1306         if (arc_meta_max < arc_meta_used)
1307                 arc_meta_max = arc_meta_used;
1308         ARCSTAT_INCR(arcstat_meta_used, -space);
1309         ASSERT(arc_size >= space);
1310         atomic_add_64(&arc_size, -space);
1311 }
1312 
1313 void *
1314 arc_data_buf_alloc(uint64_t size)
1315 {
1316         if (arc_evict_needed(ARC_BUFC_DATA))
1317                 cv_signal(&arc_reclaim_thr_cv);
1318         atomic_add_64(&arc_size, size);
1319         return (zio_data_buf_alloc(size));
1320 }
1321 
1322 void
1323 arc_data_buf_free(void *buf, uint64_t size)
1324 {
1325         zio_data_buf_free(buf, size);
1326         ASSERT(arc_size >= size);
1327         atomic_add_64(&arc_size, -size);
1328 }
1329 
1330 arc_buf_t *
1331 arc_buf_alloc(spa_t *spa, int size, void *tag, arc_buf_contents_t type)
1332 {
1333         arc_buf_hdr_t *hdr;
1334         arc_buf_t *buf;
1335 
1336         ASSERT3U(size, >, 0);
1337         hdr = kmem_cache_alloc(hdr_cache, KM_PUSHPAGE);
1338         ASSERT(BUF_EMPTY(hdr));
1339         hdr->b_size = size;
1340         hdr->b_type = type;
1341         hdr->b_spa = spa_load_guid(spa);
1342         hdr->b_state = arc_anon;
1343         hdr->b_arc_access = 0;
1344         buf = kmem_cache_alloc(buf_cache, KM_PUSHPAGE);
1345         buf->b_hdr = hdr;
1346         buf->b_data = NULL;
1347         buf->b_efunc = NULL;
1348         buf->b_private = NULL;
1349         buf->b_next = NULL;

1293                 break;
1294         case ARC_SPACE_OTHER:
1295                 ARCSTAT_INCR(arcstat_other_size, -space);
1296                 break;
1297         case ARC_SPACE_HDRS:
1298                 ARCSTAT_INCR(arcstat_hdr_size, -space);
1299                 break;
1300         case ARC_SPACE_L2HDRS:
1301                 ARCSTAT_INCR(arcstat_l2_hdr_size, -space);
1302                 break;
1303         }
1304 
1305         ASSERT(arc_meta_used >= space);
1306         if (arc_meta_max < arc_meta_used)
1307                 arc_meta_max = arc_meta_used;
1308         ARCSTAT_INCR(arcstat_meta_used, -space);
1309         ASSERT(arc_size >= space);
1310         atomic_add_64(&arc_size, -space);
1311 }
1312 

















1313 arc_buf_t *
1314 arc_buf_alloc(spa_t *spa, int size, void *tag, arc_buf_contents_t type)
1315 {
1316         arc_buf_hdr_t *hdr;
1317         arc_buf_t *buf;
1318 
1319         ASSERT3U(size, >, 0);
1320         hdr = kmem_cache_alloc(hdr_cache, KM_PUSHPAGE);
1321         ASSERT(BUF_EMPTY(hdr));
1322         hdr->b_size = size;
1323         hdr->b_type = type;
1324         hdr->b_spa = spa_load_guid(spa);
1325         hdr->b_state = arc_anon;
1326         hdr->b_arc_access = 0;
1327         buf = kmem_cache_alloc(buf_cache, KM_PUSHPAGE);
1328         buf->b_hdr = hdr;
1329         buf->b_data = NULL;
1330         buf->b_efunc = NULL;
1331         buf->b_private = NULL;
1332         buf->b_next = NULL;