summaryrefslogtreecommitdiffstats
path: root/include/linux/raid
diff options
context:
space:
mode:
Diffstat (limited to 'include/linux/raid')
-rw-r--r--include/linux/raid/md.h4
-rw-r--r--include/linux/raid/md_k.h80
-rw-r--r--include/linux/raid/raid1.h14
-rw-r--r--include/linux/raid/raid10.h22
-rw-r--r--include/linux/raid/raid5.h7
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
*/
OpenPOWER on IntegriCloud