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dm integrity: flush journal on suspend when using separate metadata device

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Flush the journal on suspend when using separate data and metadata devices,
so that the metadata device can be discarded and the table can be reloaded
with a linear target pointing to the data device.

NOTE: the journal is deliberately not flushed when using the same device
for metadata and data, so that the journal replay code is tested.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
This commit is contained in:
Mikulas Patocka 2018-07-03 20:13:32 +02:00 committed by Mike Snitzer
parent 1f9fc0b826
commit 747829a8e6
1 changed files with 3 additions and 1 deletions
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4
drivers/md/dm-integrity.c
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@ -2052,7 +2052,7 @@ static void integrity_writer(struct work_struct *w)
unsigned prev_free_sectors;
/* the following test is not needed, but it tests the replay code */
if (READ_ONCE(ic->suspending))
if (READ_ONCE(ic->suspending) && !ic->meta_dev)
return;
spin_lock_irq(&ic->endio_wait.lock);
@ -2287,6 +2287,8 @@ static void dm_integrity_postsuspend(struct dm_target *ti)
drain_workqueue(ic->commit_wq);
if (ic->mode == 'J') {
if (ic->meta_dev)
queue_work(ic->writer_wq, &ic->writer_work);
drain_workqueue(ic->writer_wq);
dm_integrity_flush_buffers(ic);
}