void init_bio_entry_by_clone_never_giveup(
struct bio_entry *bioe, struct bio *bio,
struct block_device *bdev, gfp_t gfp_mask)
{
while (!init_bio_entry_by_clone(bioe, bio, bdev, gfp_mask)) {
LOGd_("clone bio failed %p.\n", bio);
schedule();
}
}
/**
* Read logpack data.
* Padding area will be also read.
*
* @fd file descriptor of log device.
* @super super sector.
* @logh logpack header.
* @salt checksum salt.
* @sect_ary sector array.
*
* RETURN:
* index of invalid record found at first.
* logh->n_records if the whole logpack is valid.
*/
unsigned int read_logpack_data_from_wldev(
int fd,
const struct walb_super_sector* super,
const struct walb_logpack_header* logh, u32 salt,
struct sector_data_array *sect_ary)
{
const int lbs = super->logical_bs;
const int pbs = super->physical_bs;
int i;
int total_pb;
ASSERT(lbs == LOGICAL_BLOCK_SIZE);
ASSERT_PBS(pbs);
if (logh->total_io_size > sect_ary->size) {
LOGe("buffer size is not enough.\n");
return false;
}
total_pb = 0;
for (i = 0; i < logh->n_records; i++) {
u64 log_off;
u32 log_lb, log_pb;
if (test_bit_u32(LOG_RECORD_DISCARD, &logh->record[i].flags)) {
continue;
}
log_lb = logh->record[i].io_size;
log_pb = capacity_pb(pbs, log_lb);
log_off = get_offset_of_lsid_2
(super, logh->record[i].lsid);
LOGd_("lsid: %"PRIu64" log_off: %"PRIu64"\n",
logh->record[i].lsid,
log_off);
/* Read data for the log record. */
if (!sector_array_pread(
fd, log_off, sect_ary,
total_pb, log_pb)) {
LOGe("read sectors failed.\n");
return i;
}
if (test_bit_u32(LOG_RECORD_PADDING, &logh->record[i].flags)) {
total_pb += log_pb;
continue;
}
/* Confirm checksum */
u32 csum = sector_array_checksum(
sect_ary, total_pb * pbs,
log_lb * lbs, salt);
if (csum != logh->record[i].checksum) {
LOGe("log header checksum is invalid. %08x %08x\n",
csum, logh->record[i].checksum);
return i;
}
total_pb += log_pb;
}
ASSERT(i == logh->n_records);
return logh->n_records;
}