SUM_FOOTER_SIZE
SUM_FOOTER_SIZE) / SUMMARY_SIZE;
(sbi->blocksize - SUM_FOOTER_SIZE) / SUMMARY_SIZE)
memcpy(sum_footer(sbi, dst), sum_footer(sbi, src), SUM_FOOTER_SIZE);
SUM_FOOTER_SIZE)
SUM_FOOTER_SIZE);
SUM_FOOTER_SIZE)
sbi->sum_journal_size = sbi->sum_blocksize - SUM_FOOTER_SIZE -