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-rw-r--r--include/linux/raid/md_k.h40
1 files changed, 34 insertions, 6 deletions
diff --git a/include/linux/raid/md_k.h b/include/linux/raid/md_k.h
index ebce949b144..46629a275ba 100644
--- a/include/linux/raid/md_k.h
+++ b/include/linux/raid/md_k.h
@@ -105,6 +105,8 @@ struct mdk_rdev_s
int sb_size; /* bytes in the superblock */
int preferred_minor; /* autorun support */
+ struct kobject kobj;
+
/* A device can be in one of three states based on two flags:
* Not working: faulty==1 in_sync==0
* Fully working: faulty==0 in_sync==1
@@ -115,11 +117,12 @@ struct mdk_rdev_s
* It can never have faulty==1, in_sync==1
* This reduces the burden of testing multiple flags in many cases
*/
- int faulty; /* if faulty do not issue IO requests */
- int in_sync; /* device is a full member of the array */
- unsigned long flags; /* Should include faulty and in_sync here. */
+ unsigned long flags;
+#define Faulty 1 /* device is known to have a fault */
+#define In_sync 2 /* device is in_sync with rest of array */
#define WriteMostly 4 /* Avoid reading if at all possible */
+#define BarriersNotsupp 5 /* BIO_RW_BARRIER is not supported */
int desc_nr; /* descriptor index in the superblock */
int raid_disk; /* role of device in array */
@@ -132,6 +135,9 @@ struct mdk_rdev_s
* only maintained for arrays that
* support hot removal
*/
+ atomic_t read_errors; /* number of consecutive read errors that
+ * we have tried to ignore.
+ */
};
typedef struct mdk_personality_s mdk_personality_t;
@@ -148,6 +154,8 @@ struct mddev_s
struct gendisk *gendisk;
+ struct kobject kobj;
+
/* Superblock information */
int major_version,
minor_version,
@@ -171,6 +179,10 @@ struct mddev_s
sector_t resync_mark_cnt;/* blocks written at resync_mark */
sector_t resync_max_sectors; /* may be set by personality */
+
+ sector_t resync_mismatches; /* count of sectors where
+ * parity/replica mismatch found
+ */
/* recovery/resync flags
* NEEDED: we might need to start a resync/recover
* RUNNING: a thread is running, or about to be started
@@ -178,6 +190,8 @@ struct mddev_s
* ERR: and IO error was detected - abort the resync/recovery
* INTR: someone requested a (clean) early abort.
* DONE: thread is done and is waiting to be reaped
+ * REQUEST: user-space has requested a sync (used with SYNC)
+ * CHECK: user-space request for for check-only, no repair
*/
#define MD_RECOVERY_RUNNING 0
#define MD_RECOVERY_SYNC 1
@@ -185,6 +199,8 @@ struct mddev_s
#define MD_RECOVERY_INTR 3
#define MD_RECOVERY_DONE 4
#define MD_RECOVERY_NEEDED 5
+#define MD_RECOVERY_REQUESTED 6
+#define MD_RECOVERY_CHECK 7
unsigned long recovery;
int in_sync; /* know to not need resync */
@@ -195,6 +211,13 @@ struct mddev_s
int degraded; /* whether md should consider
* adding a spare
*/
+ int barriers_work; /* initialised to true, cleared as soon
+ * as a barrier request to slave
+ * fails. Only supported
+ */
+ struct bio *biolist; /* bios that need to be retried
+ * because BIO_RW_BARRIER is not supported
+ */
atomic_t recovery_active; /* blocks scheduled, but not written */
wait_queue_head_t recovery_wait;
@@ -232,7 +255,7 @@ struct mddev_s
static inline void rdev_dec_pending(mdk_rdev_t *rdev, mddev_t *mddev)
{
- int faulty = rdev->faulty;
+ int faulty = test_bit(Faulty, &rdev->flags);
if (atomic_dec_and_test(&rdev->nr_pending) && faulty)
set_bit(MD_RECOVERY_NEEDED, &mddev->recovery);
}
@@ -270,6 +293,13 @@ struct mdk_personality_s
};
+struct md_sysfs_entry {
+ struct attribute attr;
+ ssize_t (*show)(mddev_t *, char *);
+ ssize_t (*store)(mddev_t *, const char *, size_t);
+};
+
+
static inline char * mdname (mddev_t * mddev)
{
return mddev->gendisk ? mddev->gendisk->disk_name : "mdX";
@@ -304,10 +334,8 @@ typedef struct mdk_thread_s {
mddev_t *mddev;
wait_queue_head_t wqueue;
unsigned long flags;
- struct completion *event;
struct task_struct *tsk;
unsigned long timeout;
- const char *name;
} mdk_thread_t;
#define THREAD_WAKEUP 0