md/raid1: delay reads that could overtake behind-writes.

[karo-tx-linux.git] / drivers / md / bitmap.h

diff --git a/drivers/md/bitmap.h b/drivers/md/bitmap.h
index aa82b7caa85f0978d89bc220510061e064b9c458..3797dea4723a3ea81b52da362ef5101e6d5e382b 100644 (file)
--- a/drivers/md/bitmap.h
+++ b/drivers/md/bitmap.h
@@ -240,6 +240,7 @@ struct bitmap {
        atomic_t pending_writes; /* pending writes to the bitmap file */
        wait_queue_head_t write_wait;
        wait_queue_head_t overflow_wait;
+       wait_queue_head_t behind_wait;
 
        struct sysfs_dirent *sysfs_can_clear;
 };