md/raid5: change ->inactive_blocked to a bit-flag.

This allows us to easily add more (atomic) flags.

Signed-off-by: NeilBrown <neilb@suse.de>

1 files changed, 6 insertions, 3 deletions

diff --git a/drivers/md/raid5.h b/drivers/md/raid5.h
index 6614ac5ffc0e..ebe4e24bc14d 100644
--- a/drivers/md/raid5.h
+++ b/drivers/md/raid5.h
@@ -509,9 +509,11 @@ struct r5conf {
         struct llist_head       released_stripes;
         wait_queue_head_t       wait_for_stripe;
         wait_queue_head_t       wait_for_overlap;
-        int                     inactive_blocked;       /* release of inactive stripes blocked,
-                                                         * waiting for 25% to be free
-                                                         */
+        unsigned long           cache_state;
+#define R5_INACTIVE_BLOCKED     1       /* release of inactive stripes blocked,
+                                         * waiting for 25% to be free
+                                         */
+
         int                     pool_size; /* number of disks in stripeheads in pool */
         spinlock_t              device_lock;
         struct disk_info        *disks;
@@ -526,6 +528,7 @@ struct r5conf {
         int                     worker_cnt_per_group;
 };
 
+
 /*
  * Our supported algorithms
  */