X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=include%2Flinux%2Fraid%2Fraid1.h;h=50965d9680b698744fdd623c455766a2c1310221;hb=9213980e6a70d8473e0ffd4b39ab5b6caaba9ff5;hp=96abcad3a3073da6af5ca524a8e8a3eee4191544;hpb=5273a3df6485dc2ad6aa7ddd441b9a21970f003b;p=linux-2.6.git

diff --git a/include/linux/raid/raid1.h b/include/linux/raid/raid1.h
index 96abcad3a..50965d968 100644
--- 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;
 };