Merge branch 'dmaengine' into async-tx-next
[linux-2.6.git] / drivers / md / raid5.h
index 9459689..2390e0e 100644 (file)
@@ -2,6 +2,7 @@
 #define _RAID5_H
 
 #include <linux/raid/xor.h>
+#include <linux/dmaengine.h>
 
 /*
  *
  */
 enum check_states {
        check_state_idle = 0,
-       check_state_run, /* parity check */
+       check_state_run, /* xor parity check */
+       check_state_run_q, /* q-parity check */
+       check_state_run_pq, /* pq dual parity check */
        check_state_check_result,
        check_state_compute_run, /* parity repair */
        check_state_compute_result,
@@ -215,8 +218,8 @@ struct stripe_head {
         * @target - STRIPE_OP_COMPUTE_BLK target
         */
        struct stripe_operations {
-               int                target;
-               u32                zero_sum_result;
+               int                  target, target2;
+               enum sum_check_flags zero_sum_result;
        } ops;
        struct r5dev {
                struct bio      req;
@@ -298,7 +301,7 @@ struct r6_state {
 #define STRIPE_OP_COMPUTE_BLK  1
 #define STRIPE_OP_PREXOR       2
 #define STRIPE_OP_BIODRAIN     3
-#define STRIPE_OP_POSTXOR      4
+#define STRIPE_OP_RECONSTRUCT  4
 #define STRIPE_OP_CHECK        5
 
 /*
@@ -385,8 +388,21 @@ struct raid5_private_data {
                                            * (fresh device added).
                                            * Cleared when a sync completes.
                                            */
-
-       struct page             *spare_page; /* Used when checking P/Q in raid6 */
+       /* per cpu variables */
+       struct raid5_percpu {
+               struct page     *spare_page; /* Used when checking P/Q in raid6 */
+               void            *scribble;   /* space for constructing buffer
+                                             * lists and performing address
+                                             * conversions
+                                             */
+       } *percpu;
+       size_t                  scribble_len; /* size of scribble region must be
+                                              * associated with conf to handle
+                                              * cpu hotplug while reshaping
+                                              */
+#ifdef CONFIG_HOTPLUG_CPU
+       struct notifier_block   cpu_notify;
+#endif
 
        /*
         * Free stripes pool