[PATCH 02/11] block: add definition for support data write life times

[Jens Axboe]

Signed-off-by: Jens Axboe <ax...@kernel.dk>
---
 include/linux/blk_types.h | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/include/linux/blk_types.h b/include/linux/blk_types.h
index 1940876a7fa7..16c4e657807f 100644
--- a/include/linux/blk_types.h
+++ b/include/linux/blk_types.h
@@ -314,6 +314,19 @@ struct blk_rq_stat {
        u64 batch;
 };
 
+/*
+ * Data life time definitions for writes. These are relative within a
+ * given device, no absolute meaning is attached to them.
+ */
+enum {
+       WRITE_LIFE_UNKNOWN      = 0,
+       WRITE_LIFE_SHORT,
+       WRITE_LIFE_MEDIUM,
+       WRITE_LIFE_LONG,
+       WRITE_LIFE_EXTREME,
+       WRITE_LIFE_NR,
+};
+
 static inline void bio_set_streamid(struct bio *bio, unsigned int stream)
 {
        bio->bi_stream = stream;
-- 
2.7.4