Call the flush callback from the log.
If flush failed, we need to mark the whole log as dirty. Also, set variable
flush_failed, which prevents any bits ever being marked as free.
Signed-off-by: Mikulas Patocka <mpatocka@xxxxxxxxxx>
---
drivers/md/dm-log.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
Index: linux-2.6.30-rc2-devel/drivers/md/dm-log.c
===================================================================
--- linux-2.6.30-rc2-devel.orig/drivers/md/dm-log.c 2009-04-27 12:48:34.000000000 +0200
+++ linux-2.6.30-rc2-devel/drivers/md/dm-log.c 2009-04-27 12:49:00.000000000 +0200
@@ -679,6 +679,20 @@ static int disk_flush(struct dm_dirty_lo
if (!lc->touched_cleaned && !lc->touched_dirtied)
return 0;
+ if (lc->touched_cleaned && flush) {
+ if (flush(cookie)) {
+ /*
+ * At this point it is impossible to determine which
+ * regions are clean and which are dirty. So mark all
+ * of them dirty.
+ */
+ int i;
+ lc->flush_failed = 1;
+ for (i = 0; i < lc->region_count; i++)
+ log_clear_bit(lc, lc->clean_bits, i);
+ }
+ }
+
r = rw_header(lc, WRITE);
if (r)
fail_log_device(lc);
--
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