reshape structures. reshape and reshape_bio
for reverse mapping.
raid0.h | 29 +++++++++++++++++++++++++++++
1 file changed, 29 insertions(+)
Signed-off-by: razb <raziebe@xxxxxxxxx>
---
diff --git a/drivers/md/raid0.h b/drivers/md/raid0.h
index 91f8e87..a0d6ae2 100644
--- a/drivers/md/raid0.h
+++ b/drivers/md/raid0.h
@@ -13,8 +13,37 @@ struct raid0_private_data
struct strip_zone *strip_zone;
mdk_rdev_t **devlist; /* lists of rdevs, pointed to by strip_zone->dev */
int nr_strip_zones;
+ struct mutex reshape_lock;
+ struct raid0_reshape *reshape;
};
typedef struct raid0_private_data raid0_conf_t;
+struct raid0_reshape {
+ int16_t pages; /* single reshape io size in pages */
+ int16_t nr_bios; /* number of bios in each chunk read */
+ int32_t bio_size; /* single reshape io size in bytes */
+ int32_t last_bio_size; /* single reshape io size in bytes */
+ atomic_t active_ios; /*number of active reshape bios (read or write)*/
+ struct bio_list ios;/* succefull reshape reads list */
+ struct bio_list incoming_ios;/* incmoing ios while reshaping */
+ int raid_disks; /* number of raid disks in new array */
+ int window; /* reshape last window size */
+ long flags; /* reshape state flag */
+ spinlock_t lock; /* lock used to maintain both lists */
+ raid0_conf_t *conf;/* reshape temporary mapping raid device */
+ mddev_t *mddev_src; /* source mddev */
+};
+
+struct raid0_reshape_bio{
+ sector_t array_sector;
+ int bi_size;
+ struct raid0_reshape *reshape;
+};
+
+static inline struct raid0_reshape *mddev_to_reshape(mddev_t *mddev)
+{
+ return ((raid0_conf_t *)mddev->private)->reshape;
+}
+
#endif
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