[PATCH] md: write intent bitmap support for raid10

Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 8 insertions, 1 deletions

diff --git a/include/linux/raid/raid10.h b/include/linux/raid/raid10.h
index 08317b77802..b660cbf628d 100644
--- a/include/linux/raid/raid10.h
+++ b/include/linux/raid/raid10.h
@@ -35,13 +35,19 @@ struct r10_private_data_s {
         sector_t chunk_mask;
 
         struct list_head        retry_list;
-        /* for use when syncing mirrors: */
+        /* queue pending writes and submit them on unplug */
+        struct bio_list         pending_bio_list;
+
 
         spinlock_t              resync_lock;
         int nr_pending;
         int nr_waiting;
         int barrier;
         sector_t                next_resync;
+        int                     fullsync;  /* set to 1 if a full sync is needed,
+                                            * (fresh device added).
+                                            * Cleared when a sync completes.
+                                            */
 
         wait_queue_head_t       wait_barrier;
 
@@ -100,4 +106,5 @@ struct r10bio_s {
 #define R10BIO_Uptodate 0
 #define R10BIO_IsSync   1
 #define R10BIO_IsRecover 2
+#define R10BIO_Degraded 3
 #endif