1 files changed, 14 insertions, 3 deletions

diff --git a/include/linux/raid/md_k.h b/include/linux/raid/md_k.h
index 3dea9f545c8f..9f2549ac0e2d 100644
--- a/include/linux/raid/md_k.h
+++ b/include/linux/raid/md_k.h
@@ -59,7 +59,7 @@ struct mdk_rdev_s
         int             sb_loaded;
         __u64           sb_events;
         sector_t        data_offset;    /* start of data in array */
-        sector_t        sb_offset;
+        sector_t        sb_start;       /* offset of the super block (in 512byte sectors) */
         int             sb_size;        /* bytes in the superblock */
         int             preferred_minor;        /* autorun support */
 
@@ -87,6 +87,9 @@ struct mdk_rdev_s
 #define Blocked         8               /* An error occured on an externally
                                          * managed array, don't allow writes
                                          * until it is cleared */
+#define StateChanged    9               /* Faulty or Blocked has changed during
+                                         * interrupt, so it needs to be
+                                         * notified by the thread */
         wait_queue_head_t blocked_wait;
 
         int desc_nr;                    /* descriptor index in the superblock */
@@ -147,7 +150,7 @@ struct mddev_s
         int                             raid_disks;
         int                             max_disks;
         sector_t                        size; /* used size of component devices */
-        sector_t                        array_size; /* exported array size */
+        sector_t                        array_sectors; /* exported array size */
         __u64                           events;
 
         char                            uuid[16];
@@ -188,6 +191,7 @@ struct mddev_s
          * NEEDED:   we might need to start a resync/recover
          * RUNNING:  a thread is running, or about to be started
          * SYNC:     actually doing a resync, not a recovery
+         * RECOVER:  doing recovery, or need to try it.
          * INTR:     resync needs to be aborted for some reason
          * DONE:     thread is done and is waiting to be reaped
          * REQUEST:  user-space has requested a sync (used with SYNC)
@@ -198,6 +202,7 @@ struct mddev_s
          */
 #define MD_RECOVERY_RUNNING     0
 #define MD_RECOVERY_SYNC        1
+#define MD_RECOVERY_RECOVER     2
 #define MD_RECOVERY_INTR        3
 #define MD_RECOVERY_DONE        4
 #define MD_RECOVERY_NEEDED      5
@@ -210,7 +215,8 @@ struct mddev_s
 
         int                             in_sync;        /* know to not need resync */
         struct mutex                    reconfig_mutex;
-        atomic_t                        active;
+        atomic_t                        active;         /* general refcount */
+        atomic_t                        openers;        /* number of active opens */
 
         int                             changed;        /* true if we might need to reread partition info */
         int                             degraded;       /* whether md should consider
@@ -227,6 +233,8 @@ struct mddev_s
         atomic_t                        recovery_active; /* blocks scheduled, but not written */
         wait_queue_head_t               recovery_wait;
         sector_t                        recovery_cp;
+        sector_t                        resync_min;     /* user requested sync
+                                                         * starts here */
         sector_t                        resync_max;     /* resync should pause
                                                          * when it gets here */
 
@@ -331,6 +339,9 @@ static inline char * mdname (mddev_t * mddev)
 #define rdev_for_each(rdev, tmp, mddev)                         \
         rdev_for_each_list(rdev, tmp, (mddev)->disks)
 
+#define rdev_for_each_rcu(rdev, mddev)                          \
+        list_for_each_entry_rcu(rdev, &((mddev)->disks), same_set)
+
 typedef struct mdk_thread_s {
         void                    (*run) (mddev_t *mddev);
         mddev_t                 *mddev;