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-rw-r--r--drivers/md/md.h17
1 files changed, 15 insertions, 2 deletions
diff --git a/drivers/md/md.h b/drivers/md/md.h
index ab339571e57f..2bea51edfab7 100644
--- a/drivers/md/md.h
+++ b/drivers/md/md.h
@@ -87,10 +87,16 @@ struct md_rdev {
* array and could again if we did a partial
* resync from the bitmap
*/
- sector_t recovery_offset;/* If this device has been partially
+ union {
+ sector_t recovery_offset;/* If this device has been partially
* recovered, this is where we were
* up to.
*/
+ sector_t journal_tail; /* If this device is a journal device,
+ * this is the journal tail (journal
+ * recovery start point)
+ */
+ };
atomic_t nr_pending; /* number of pending requests.
* only maintained for arrays that
@@ -172,6 +178,11 @@ enum flag_bits {
* This device is seen locally but not
* by the whole cluster
*/
+ Journal, /* This device is used as journal for
+ * raid-5/6.
+ * Usually, this device should be faster
+ * than other devices in the array
+ */
};
#define BB_LEN_MASK (0x00000000000001FFULL)
@@ -221,6 +232,8 @@ struct mddev {
#define MD_STILL_CLOSED 4 /* If set, then array has not been opened since
* md_ioctl checked on it.
*/
+#define MD_JOURNAL_CLEAN 5 /* A raid with journal is already clean */
+#define MD_HAS_JOURNAL 6 /* The raid array has journal feature set */
int suspended;
atomic_t active_io;
@@ -658,7 +671,7 @@ extern struct bio *bio_alloc_mddev(gfp_t gfp_mask, int nr_iovecs,
struct mddev *mddev);
extern void md_unplug(struct blk_plug_cb *cb, bool from_schedule);
-extern void md_reload_sb(struct mddev *mddev);
+extern void md_reload_sb(struct mddev *mddev, int raid_disk);
extern void md_update_sb(struct mddev *mddev, int force);
extern void md_kick_rdev_from_array(struct md_rdev * rdev);
struct md_rdev *md_find_rdev_nr_rcu(struct mddev *mddev, int nr);