md: avoid spinlock problem in blk_throtl_exit

[mv-sheeva.git] / drivers / md / md.h

diff --git a/drivers/md/md.h b/drivers/md/md.h
index d05bab55df4e7d3b49a500ad196610bfd1d2e67c..7e90b8593b2a4f0f292759f1152348134ac0035e 100644 (file)
--- a/drivers/md/md.h
+++ b/drivers/md/md.h
@@ -60,6 +60,12 @@ struct mdk_rdev_s
        mddev_t *mddev;                 /* RAID array if running */
        int last_events;                /* IO event timestamp */
 
+       /*
+        * If meta_bdev is non-NULL, it means that a separate device is
+        * being used to store the metadata (superblock/bitmap) which
+        * would otherwise be contained on the same device as the data (bdev).
+        */
+       struct block_device *meta_bdev;
        struct block_device *bdev;      /* block device handle */
 
        struct page     *sb_page;
@@ -87,8 +93,6 @@ struct mdk_rdev_s
 #define        Faulty          1               /* device is known to have a fault */
 #define        In_sync         2               /* device is in_sync with rest of array */
 #define        WriteMostly     4               /* Avoid reading if at all possible */
-#define        AllReserved     6               /* If whole device is reserved for
-                                        * one array */
 #define        AutoDetected    7               /* added by auto-detect */
 #define Blocked                8               /* An error occured on an externally
                                         * managed array, don't allow writes
@@ -148,7 +152,8 @@ struct mddev_s
                                                       * are happening, so run/
                                                       * takeover/stop are not safe
                                                       */
-
+       int                             ready; /* See when safe to pass 
+                                               * IO requests down */
        struct gendisk                  *gendisk;
 
        struct kobject                  kobj;
@@ -497,8 +502,8 @@ extern void md_flush_request(mddev_t *mddev, struct bio *bio);
 extern void md_super_write(mddev_t *mddev, mdk_rdev_t *rdev,
                           sector_t sector, int size, struct page *page);
 extern void md_super_wait(mddev_t *mddev);
-extern int sync_page_io(mdk_rdev_t *rdev, sector_t sector, int size,
-                       struct page *page, int rw);
+extern int sync_page_io(mdk_rdev_t *rdev, sector_t sector, int size, 
+                       struct page *page, int rw, bool metadata_op);
 extern void md_do_sync(mddev_t *mddev);
 extern void md_new_event(mddev_t *mddev);
 extern int md_allow_write(mddev_t *mddev);