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-rw-r--r--include/linux/raid/raid10.h22
1 files changed, 19 insertions, 3 deletions
diff --git a/include/linux/raid/raid10.h b/include/linux/raid/raid10.h
index 6070878..b110329 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
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