5 files changed, 62 insertions, 65 deletions

diff --git a/include/linux/raid/md.h b/include/linux/raid/md.h
index 13e7c4b62367..b6e0bcad84e1 100644
--- a/include/linux/raid/md.h
+++ b/include/linux/raid/md.h
@@ -71,8 +71,8 @@
  */
 #define MD_PATCHLEVEL_VERSION           3
 
-extern int register_md_personality (int p_num, mdk_personality_t *p);
-extern int unregister_md_personality (int p_num);
+extern int register_md_personality (struct mdk_personality *p);
+extern int unregister_md_personality (struct mdk_personality *p);
 extern mdk_thread_t * md_register_thread (void (*run) (mddev_t *mddev),
                                 mddev_t *mddev, const char *name);
 extern void md_unregister_thread (mdk_thread_t *thread);
diff --git a/include/linux/raid/md_k.h b/include/linux/raid/md_k.h
index 46629a275ba9..617b9506c760 100644
--- a/include/linux/raid/md_k.h
+++ b/include/linux/raid/md_k.h
@@ -18,62 +18,19 @@
 /* and dm-bio-list.h is not under include/linux because.... ??? */
 #include "../../../drivers/md/dm-bio-list.h"
 
-#define MD_RESERVED       0UL
-#define LINEAR            1UL
-#define RAID0             2UL
-#define RAID1             3UL
-#define RAID5             4UL
-#define TRANSLUCENT       5UL
-#define HSM               6UL
-#define MULTIPATH         7UL
-#define RAID6             8UL
-#define RAID10            9UL
-#define FAULTY            10UL
-#define MAX_PERSONALITY   11UL
-
 #define LEVEL_MULTIPATH         (-4)
 #define LEVEL_LINEAR            (-1)
 #define LEVEL_FAULTY            (-5)
 
+/* we need a value for 'no level specified' and 0
+ * means 'raid0', so we need something else.  This is
+ * for internal use only
+ */
+#define LEVEL_NONE              (-1000000)
+
 #define MaxSector (~(sector_t)0)
 #define MD_THREAD_NAME_MAX 14
 
-static inline int pers_to_level (int pers)
-{
-        switch (pers) {
-                case FAULTY:            return LEVEL_FAULTY;
-                case MULTIPATH:         return LEVEL_MULTIPATH;
-                case HSM:               return -3;
-                case TRANSLUCENT:       return -2;
-                case LINEAR:            return LEVEL_LINEAR;
-                case RAID0:             return 0;
-                case RAID1:             return 1;
-                case RAID5:             return 5;
-                case RAID6:             return 6;
-                case RAID10:            return 10;
-        }
-        BUG();
-        return MD_RESERVED;
-}
-
-static inline int level_to_pers (int level)
-{
-        switch (level) {
-                case LEVEL_FAULTY: return FAULTY;
-                case LEVEL_MULTIPATH: return MULTIPATH;
-                case -3: return HSM;
-                case -2: return TRANSLUCENT;
-                case LEVEL_LINEAR: return LINEAR;
-                case 0: return RAID0;
-                case 1: return RAID1;
-                case 4:
-                case 5: return RAID5;
-                case 6: return RAID6;
-                case 10: return RAID10;
-        }
-        return MD_RESERVED;
-}
-
 typedef struct mddev_s mddev_t;
 typedef struct mdk_rdev_s mdk_rdev_t;
 
@@ -138,14 +95,16 @@ struct mdk_rdev_s
         atomic_t        read_errors;    /* number of consecutive read errors that
                                          * we have tried to ignore.
                                          */
+        atomic_t        corrected_errors; /* number of corrected read errors,
+                                           * for reporting to userspace and storing
+                                           * in superblock.
+                                           */
 };
 
-typedef struct mdk_personality_s mdk_personality_t;
-
 struct mddev_s
 {
         void                            *private;
-        mdk_personality_t               *pers;
+        struct mdk_personality          *pers;
         dev_t                           unit;
         int                             md_minor;
         struct list_head                disks;
@@ -164,6 +123,7 @@ struct mddev_s
         int                             chunk_size;
         time_t                          ctime, utime;
         int                             level, layout;
+        char                            clevel[16];
         int                             raid_disks;
         int                             max_disks;
         sector_t                        size; /* used size of component devices */
@@ -183,6 +143,11 @@ struct mddev_s
         sector_t                        resync_mismatches; /* count of sectors where
                                                             * parity/replica mismatch found
                                                             */
+        /* if zero, use the system-wide default */
+        int                             sync_speed_min;
+        int                             sync_speed_max;
+
+        int                             ok_start_degraded;
         /* recovery/resync flags 
          * NEEDED:   we might need to start a resync/recover
          * RUNNING:  a thread is running, or about to be started
@@ -265,9 +230,11 @@ static inline void md_sync_acct(struct block_device *bdev, unsigned long nr_sect
         atomic_add(nr_sectors, &bdev->bd_contains->bd_disk->sync_io);
 }
 
-struct mdk_personality_s
+struct mdk_personality
 {
         char *name;
+        int level;
+        struct list_head list;
         struct module *owner;
         int (*make_request)(request_queue_t *q, struct bio *bio);
         int (*run)(mddev_t *mddev);
@@ -305,8 +272,6 @@ static inline char * mdname (mddev_t * mddev)
         return mddev->gendisk ? mddev->gendisk->disk_name : "mdX";
 }
 
-extern mdk_rdev_t * find_rdev_nr(mddev_t *mddev, int nr);
-
 /*
  * iterates through some rdev ringlist. It's safe to remove the
  * current 'rdev'. Dont touch 'tmp' though.
@@ -366,5 +331,10 @@ do {									\
         __wait_event_lock_irq(wq, condition, lock, cmd);                \
 } while (0)
 
+static inline void safe_put_page(struct page *p)
+{
+        if (p) put_page(p);
+}
+
 #endif
 
diff --git a/include/linux/raid/raid1.h b/include/linux/raid/raid1.h
index 292b98f2b408..9d5494aaac0f 100644
--- a/include/linux/raid/raid1.h
+++ b/include/linux/raid/raid1.h
@@ -45,6 +45,8 @@ struct r1_private_data_s {
 
         spinlock_t              resync_lock;
         int                     nr_pending;
+        int                     nr_waiting;
+        int                     nr_queued;
         int                     barrier;
         sector_t                next_resync;
         int                     fullsync;  /* set to 1 if a full sync is needed,
@@ -52,11 +54,12 @@ struct r1_private_data_s {
                                             * Cleared when a sync completes.
                                             */
 
-        wait_queue_head_t       wait_idle;
-        wait_queue_head_t       wait_resume;
+        wait_queue_head_t       wait_barrier;
 
         struct pool_info        *poolinfo;
 
+        struct page             *tmppage;
+
         mempool_t *r1bio_pool;
         mempool_t *r1buf_pool;
 };
@@ -106,6 +109,13 @@ struct r1bio_s {
         /* DO NOT PUT ANY NEW FIELDS HERE - bios array is contiguously alloced*/
 };
 
+/* when we get a read error on a read-only array, we redirect to another
+ * device without failing the first device, or trying to over-write to
+ * correct the read error.  To keep track of bad blocks on a per-bio
+ * level, we store IO_BLOCKED in the appropriate 'bios' pointer
+ */
+#define IO_BLOCKED ((struct bio*)1)
+
 /* bits for r1bio.state */
 #define R1BIO_Uptodate  0
 #define R1BIO_IsSync    1
diff --git a/include/linux/raid/raid10.h b/include/linux/raid/raid10.h
index 60708789c8f9..b1103298a8c2 100644
--- a/include/linux/raid/raid10.h
+++ b/include/linux/raid/raid10.h
@@ -35,18 +35,26 @@ 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 nr_queued;
         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_idle;
-        wait_queue_head_t       wait_resume;
+        wait_queue_head_t       wait_barrier;
 
         mempool_t *r10bio_pool;
         mempool_t *r10buf_pool;
+        struct page             *tmppage;
 };
 
 typedef struct r10_private_data_s conf_t;
@@ -96,8 +104,16 @@ struct r10bio_s {
         } devs[0];
 };
 
+/* when we get a read error on a read-only array, we redirect to another
+ * device without failing the first device, or trying to over-write to
+ * correct the read error.  To keep track of bad blocks on a per-bio
+ * level, we store IO_BLOCKED in the appropriate 'bios' pointer
+ */
+#define IO_BLOCKED ((struct bio*)1)
+
 /* bits for r10bio.state */
 #define R10BIO_Uptodate 0
 #define R10BIO_IsSync   1
 #define R10BIO_IsRecover 2
+#define R10BIO_Degraded 3
 #endif
diff --git a/include/linux/raid/raid5.h b/include/linux/raid/raid5.h
index f025ba6fb14c..394da8207b34 100644
--- a/include/linux/raid/raid5.h
+++ b/include/linux/raid/raid5.h
@@ -126,7 +126,7 @@
  */
 
 struct stripe_head {
-        struct stripe_head      *hash_next, **hash_pprev; /* hash pointers */
+        struct hlist_node       hash;
         struct list_head        lru;                    /* inactive_list or handle_list */
         struct raid5_private_data       *raid_conf;
         sector_t                sector;                 /* sector of this row */
@@ -152,7 +152,6 @@ struct stripe_head {
 #define R5_Insync       3       /* rdev && rdev->in_sync at start */
 #define R5_Wantread     4       /* want to schedule a read */
 #define R5_Wantwrite    5
-#define R5_Syncio       6       /* this io need to be accounted as resync io */
 #define R5_Overlap      7       /* There is a pending overlapping request on this block */
 #define R5_ReadError    8       /* seen a read error here recently */
 #define R5_ReWrite      9       /* have tried to over-write the readerror */
@@ -205,7 +204,7 @@ struct disk_info {
 };
 
 struct raid5_private_data {
-        struct stripe_head      **stripe_hashtbl;
+        struct hlist_head       *stripe_hashtbl;
         mddev_t                 *mddev;
         struct disk_info        *spare;
         int                     chunk_size, level, algorithm;
@@ -228,6 +227,8 @@ struct raid5_private_data {
                                             * Cleared when a sync completes.
                                             */
 
+        struct page             *spare_page; /* Used when checking P/Q in raid6 */
+
         /*
          * Free stripes pool
          */