patch-2_6_7-vs1_9_1_12

[linux-2.6.git] / include / linux / raid / raid1.h

diff --git a/include/linux/raid/raid1.h b/include/linux/raid/raid1.h
index 96abcad..50965d9 100644 (file)
--- a/include/linux/raid/raid1.h
+++ b/include/linux/raid/raid1.h
@@ -10,6 +10,20 @@ struct mirror_info {
        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 {
@@ -31,6 +45,8 @@ struct r1_private_data_s {
        wait_queue_head_t       wait_idle;
        wait_queue_head_t       wait_resume;
 
+       struct pool_info        *poolinfo;
+
        mempool_t *r1bio_pool;
        mempool_t *r1buf_pool;
 };