dm integrity: flush the journal on suspend

This commit flushes the journal on suspend. It is prerequisite for the
next commit that enables activating dm integrity devices in read-only mode.

Note that we deliberately didn't flush the journal on suspend, so that the
journal replay code would be tested. However, the dm-integrity code is 5
years old now, so that journal replay is well-tested, and we can make this
change now.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>

diff --git a/drivers/md/dm-integrity.c b/drivers/md/dm-integrity.c
index aaf2472..b4a873c 100644 (file)
--- a/drivers/md/dm-integrity.c
+++ b/drivers/md/dm-integrity.c
@@ -2591,10 +2591,6 @@ 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 (unlikely(dm_post_suspending(ic->ti)) && !ic->meta_dev)
-               return;
-
        spin_lock_irq(&ic->endio_wait.lock);
        write_start = ic->committed_section;
        write_sections = ic->n_committed_sections;
@@ -3101,8 +3097,7 @@ 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);
+               queue_work(ic->writer_wq, &ic->writer_work);
                drain_workqueue(ic->writer_wq);
                dm_integrity_flush_buffers(ic, true);
        }