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-rw-r--r--drivers/md/dm-integrity.c15
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/md/dm-integrity.c b/drivers/md/dm-integrity.c
index b1b0de402dfc..9118ab85cb3a 100644
--- a/drivers/md/dm-integrity.c
+++ b/drivers/md/dm-integrity.c
@@ -1943,7 +1943,22 @@ offload_to_thread:
queue_work(ic->wait_wq, &dio->work);
return;
}
+ if (journal_read_pos != NOT_FOUND)
+ dio->range.n_sectors = ic->sectors_per_block;
wait_and_add_new_range(ic, &dio->range);
+ /*
+ * wait_and_add_new_range drops the spinlock, so the journal
+ * may have been changed arbitrarily. We need to recheck.
+ * To simplify the code, we restrict I/O size to just one block.
+ */
+ if (journal_read_pos != NOT_FOUND) {
+ sector_t next_sector;
+ unsigned new_pos = find_journal_node(ic, dio->range.logical_sector, &next_sector);
+ if (unlikely(new_pos != journal_read_pos)) {
+ remove_range_unlocked(ic, &dio->range);
+ goto retry;
+ }
+ }
}
spin_unlock_irq(&ic->endio_wait.lock);