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Fix possible journal corruption caused by concurrent flushing and writing of the same journal sector

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This commit is contained in:
Vitaliy Filippov
2020-03-08 01:21:19 +03:00
parent 1696446545
commit c863543bfe
6 changed files with 48 additions and 13 deletions
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blockstore_journal.cpp
+4
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@@ -92,6 +92,10 @@ journal_entry* prefill_single_journal_entry(journal_t & journal, uint16_t type,
// Also select next sector buffer in memory
journal.cur_sector = ((journal.cur_sector + 1) % journal.sector_count);
}
else
{
journal.dirty_start = journal.next_free;
}
journal.sector_info[journal.cur_sector].offset = journal.next_free;
journal.in_sector_pos = 0;
journal.next_free = (journal.next_free+journal.block_size) < journal.len ? journal.next_free + journal.block_size : journal.block_size;