sa_data_op_t action, sa_data_locator_t *locator, void *datastart,
uint16_t buflen, dmu_tx_t *tx);
-arc_byteswap_func_t *sa_bswap_table[] = {
+arc_byteswap_func_t sa_bswap_table[] = {
byteswap_uint64_array,
byteswap_uint32_array,
byteswap_uint16_array,
{
int var_size = 0;
int i;
+ int j = -1;
int full_space;
int hdrsize;
boolean_t done = B_FALSE;
sizeof (sa_hdr_phys_t);
full_space = (buftype == SA_BONUS) ? DN_MAX_BONUSLEN : db->db_size;
+ ASSERT(IS_P2ALIGNED(full_space, 8));
for (i = 0; i != attr_count; i++) {
boolean_t is_var_sz;
+ *total = P2ROUNDUP(*total, 8);
*total += attr_desc[i].sa_length;
if (done)
goto next;
if (is_var_sz && var_size > 1) {
if (P2ROUNDUP(hdrsize + sizeof (uint16_t), 8) +
*total < full_space) {
+ /*
+ * Account for header space used by array of
+ * optional sizes of variable-length attributes.
+ * Record the index in case this increase needs
+ * to be reversed due to spill-over.
+ */
hdrsize += sizeof (uint16_t);
+ j = i;
} else {
done = B_TRUE;
*index = i;
*will_spill = B_TRUE;
}
+ /*
+ * j holds the index of the last variable-sized attribute for
+ * which hdrsize was increased. Reverse the increase if that
+ * attribute will be relocated to the spill block.
+ */
+ if (*will_spill && j == *index)
+ hdrsize -= sizeof (uint16_t);
+
hdrsize = P2ROUNDUP(hdrsize, 8);
return (hdrsize);
}
for (i = 0, len_idx = 0, hash = -1ULL; i != attr_count; i++) {
uint16_t length;
+ ASSERT(IS_P2ALIGNED(data_start, 8));
+ ASSERT(IS_P2ALIGNED(buf_space, 8));
attrs[i] = attr_desc[i].sa_attr;
length = SA_REGISTERED_LEN(sa, attrs[i]);
if (length == 0)
length = attr_desc[i].sa_length;
if (buf_space < length) { /* switch to spill buffer */
+ VERIFY(spilling);
VERIFY(bonustype == DMU_OT_SA);
if (buftype == SA_BONUS && !sa->sa_force_spill) {
sa_find_layout(hdl->sa_os, hash, attrs_start,