1 files changed, 98 insertions, 0 deletions
diff --git a/include/linux/raid/raid1.h b/include/linux/raid/raid1.h
new file mode 100644
index 000000000000..abbfdd9afe1e
--- /dev/null
+++ b/include/linux/raid/raid1.h
@@ -0,0 +1,98 @@
+#ifndef _RAID1_H
+#define _RAID1_H
+#include <linux/raid/md.h>
+typedef struct mirror_info mirror_info_t;
+struct mirror_info {
+        mdk_rdev_t      *rdev;
+        sector_t        head_position;
+};
+/*
+ * memory pools need a pointer to the mddev, so they can force an unplug
+ * when memory is tight, and a count of the number of drives that the
+ * pool was allocated for, so they know how much to allocate and free.
+ * mddev->raid_disks cannot be used, as it can change while a pool is active
+ * These two datums are stored in a kmalloced struct.
+ */
+struct pool_info {
+        mddev_t *mddev;
+        int     raid_disks;
+};
+typedef struct r1bio_s r1bio_t;
+struct r1_private_data_s {
+        mddev_t                 *mddev;
+        mirror_info_t           *mirrors;
+        int                     raid_disks;
+        int                     working_disks;
+        int                     last_used;
+        sector_t                next_seq_sect;
+        spinlock_t              device_lock;
+        struct list_head        retry_list;
+        /* for use when syncing mirrors: */
+        spinlock_t              resync_lock;
+        int nr_pending;
+        int barrier;
+        sector_t                next_resync;
+        wait_queue_head_t       wait_idle;
+        wait_queue_head_t       wait_resume;
+        struct pool_info        *poolinfo;
+        mempool_t *r1bio_pool;
+        mempool_t *r1buf_pool;
+};
+typedef struct r1_private_data_s conf_t;
+/*
+ * this is the only point in the RAID code where we violate
+ * C type safety. mddev->private is an 'opaque' pointer.
+ */
+#define mddev_to_conf(mddev) ((conf_t *) mddev->private)
+/*
+ * this is our 'private' RAID1 bio.
+ *
+ * it contains information about what kind of IO operations were started
+ * for this RAID1 operation, and about their status:
+ */
+struct r1bio_s {
+        atomic_t                remaining; /* 'have we finished' count,
+                                            * used from IRQ handlers
+                                            */
+        sector_t                sector;
+        int                     sectors;
+        unsigned long           state;
+        mddev_t                 *mddev;
+        /*
+         * original bio going to /dev/mdx
+         */
+        struct bio              *master_bio;
+        /*
+         * if the IO is in READ direction, then this is where we read
+         */
+        int                     read_disk;
+        struct list_head        retry_list;
+        /*
+         * if the IO is in WRITE direction, then multiple bios are used.
+         * We choose the number when they are allocated.
+         */
+        struct bio              *bios[0];
+};
+/* bits for r1bio.state */
+#define R1BIO_Uptodate  0
+#define R1BIO_IsSync    1
+#endif

diff --git a/include/linux/raid/raid1.h b/include/linux/raid/raid1.h new file mode 100644 index 000000000000..abbfdd9afe1e --- /dev/null +++ b/include/linux/raid/raid1.h
@@ -0,0 +1,98 @@
	1	#ifndef _RAID1_H
	2	#define _RAID1_H
	3
	4	#include <linux/raid/md.h>
	5
	6	typedef struct mirror_info mirror_info_t;
	7
	8	struct mirror_info {
	9	mdk_rdev_t *rdev;
	10	sector_t head_position;
	11	};
	12
	13	/*
	14	* memory pools need a pointer to the mddev, so they can force an unplug
	15	* when memory is tight, and a count of the number of drives that the
	16	* pool was allocated for, so they know how much to allocate and free.
	17	* mddev->raid_disks cannot be used, as it can change while a pool is active
	18	* These two datums are stored in a kmalloced struct.
	19	*/
	20
	21	struct pool_info {
	22	mddev_t *mddev;
	23	int raid_disks;
	24	};
	25
	26
	27	typedef struct r1bio_s r1bio_t;
	28
	29	struct r1_private_data_s {
	30	mddev_t *mddev;
	31	mirror_info_t *mirrors;
	32	int raid_disks;
	33	int working_disks;
	34	int last_used;
	35	sector_t next_seq_sect;
	36	spinlock_t device_lock;
	37
	38	struct list_head retry_list;
	39	/* for use when syncing mirrors: */
	40
	41	spinlock_t resync_lock;
	42	int nr_pending;
	43	int barrier;
	44	sector_t next_resync;
	45
	46	wait_queue_head_t wait_idle;
	47	wait_queue_head_t wait_resume;
	48
	49	struct pool_info *poolinfo;
	50
	51	mempool_t *r1bio_pool;
	52	mempool_t *r1buf_pool;
	53	};
	54
	55	typedef struct r1_private_data_s conf_t;
	56
	57	/*
	58	* this is the only point in the RAID code where we violate
	59	* C type safety. mddev->private is an 'opaque' pointer.
	60	*/
	61	#define mddev_to_conf(mddev) ((conf_t *) mddev->private)
	62
	63	/*
	64	* this is our 'private' RAID1 bio.
	65	*
	66	* it contains information about what kind of IO operations were started
	67	* for this RAID1 operation, and about their status:
	68	*/
	69
	70	struct r1bio_s {
	71	atomic_t remaining; /* 'have we finished' count,
	72	* used from IRQ handlers
	73	*/
	74	sector_t sector;
	75	int sectors;
	76	unsigned long state;
	77	mddev_t *mddev;
	78	/*
	79	* original bio going to /dev/mdx
	80	*/
	81	struct bio *master_bio;
	82	/*
	83	* if the IO is in READ direction, then this is where we read
	84	*/
	85	int read_disk;
	86
	87	struct list_head retry_list;
	88	/*
	89	* if the IO is in WRITE direction, then multiple bios are used.
	90	* We choose the number when they are allocated.
	91	*/
	92	struct bio *bios[0];
	93	};
	94
	95	/* bits for r1bio.state */
	96	#define R1BIO_Uptodate 0
	97	#define R1BIO_IsSync 1
	98	#endif