[dm-devel] [PATCH 13/24] dm cache policy: have policy_writeback_work return -ENODATA by default

[Mike Snitzer]

From: Heinz Mauelshagen <heinzm at redhat.com>

Caller of policy_writeback_work doesn't care, so doesn't actually fix
anything but increases consistency of returns used (which helps
debugging).

Signed-off-by: Heinz Mauelshagen <heinzm at redhat.com>
Signed-off-by: Mike Snitzer <snitzer at redhat.com>
---
 drivers/md/dm-cache-policy-internal.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/md/dm-cache-policy-internal.h b/drivers/md/dm-cache-policy-internal.h
index 0f749e8..9b1473b 100644
--- a/drivers/md/dm-cache-policy-internal.h
+++ b/drivers/md/dm-cache-policy-internal.h
@@ -56,7 +56,7 @@ static inline int policy_writeback_work(struct dm_cache_policy *p,
 					dm_oblock_t *oblock,
 					dm_cblock_t *cblock)
 {
-	return p->writeback_work ? p->writeback_work(p, oblock, cblock) : -ENOENT;
+	return p->writeback_work ? p->writeback_work(p, oblock, cblock) : -ENODATA;
 }
 
 static inline void policy_remove_mapping(struct dm_cache_policy *p, dm_oblock_t oblock)
-- 
1.8.1.4