[PATCH] md: Allow stripes to be expanded in preparation for expanding an array

[powerpc.git] / include / linux / raid / raid5.h

diff --git a/include/linux/raid/raid5.h b/include/linux/raid/raid5.h
index 394da82..b7b2653 100644 (file)
--- a/include/linux/raid/raid5.h
+++ b/include/linux/raid/raid5.h
@@ -216,7 +216,11 @@ struct raid5_private_data {
        struct list_head        bitmap_list; /* stripes delaying awaiting bitmap update */
        atomic_t                preread_active_stripes; /* stripes with scheduled io */
 
-       char                    cache_name[20];
+       /* unfortunately we need two cache names as we temporarily have
+        * two caches.
+        */
+       int                     active_name;
+       char                    cache_name[2][20];
        kmem_cache_t            *slab_cache; /* for allocating stripes */
 
        int                     seq_flush, seq_write;
@@ -238,9 +242,10 @@ struct raid5_private_data {
        wait_queue_head_t       wait_for_overlap;
        int                     inactive_blocked;       /* release of inactive stripes blocked,
                                                         * waiting for 25% to be free
-                                                        */        
+                                                        */
+       int                     pool_size; /* number of disks in stripeheads in pool */
        spinlock_t              device_lock;
-       struct disk_info        disks[0];
+       struct disk_info        *disks;
 };
 
 typedef struct raid5_private_data raid5_conf_t;