Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6

[firefly-linux-kernel-4.4.55.git] / drivers / md / md.h

diff --git a/drivers/md/md.h b/drivers/md/md.h
index 52b407369e13f0c82b7fa23f3ee2ca7d41483bbb..0b1fd3f1d85b5decfaaba4ab8b70595fffbaba1f 100644 (file)
--- a/drivers/md/md.h
+++ b/drivers/md/md.h
@@ -29,26 +29,6 @@
 typedef struct mddev_s mddev_t;
 typedef struct mdk_rdev_s mdk_rdev_t;
 
-/* generic plugging support - like that provided with request_queue,
- * but does not require a request_queue
- */
-struct plug_handle {
-       void                    (*unplug_fn)(struct plug_handle *);
-       struct timer_list       unplug_timer;
-       struct work_struct      unplug_work;
-       unsigned long           unplug_flag;
-};
-#define        PLUGGED_FLAG 1
-void plugger_init(struct plug_handle *plug,
-                 void (*unplug_fn)(struct plug_handle *));
-void plugger_set_plug(struct plug_handle *plug);
-int plugger_remove_plug(struct plug_handle *plug);
-static inline void plugger_flush(struct plug_handle *plug)
-{
-       del_timer_sync(&plug->unplug_timer);
-       cancel_work_sync(&plug->unplug_work);
-}
-
 /*
  * MD's 'extended' device
  */
@@ -199,6 +179,9 @@ struct mddev_s
        int                             delta_disks, new_level, new_layout;
        int                             new_chunk_sectors;
 
+       atomic_t                        plug_cnt;       /* If device is expecting
+                                                        * more bios soon.
+                                                        */
        struct mdk_thread_s             *thread;        /* management thread */
        struct mdk_thread_s             *sync_thread;   /* doing resync or reconstruct */
        sector_t                        curr_resync;    /* last block scheduled */
@@ -336,7 +319,6 @@ struct mddev_s
        struct list_head                all_mddevs;
 
        struct attribute_group          *to_remove;
-       struct plug_handle              *plug; /* if used by personality */
 
        struct bio_set                  *bio_set;
 
@@ -516,7 +498,6 @@ extern int md_integrity_register(mddev_t *mddev);
 extern void md_integrity_add_rdev(mdk_rdev_t *rdev, mddev_t *mddev);
 extern int strict_strtoul_scaled(const char *cp, unsigned long *res, int scale);
 extern void restore_bitmap_write_access(struct file *file);
-extern void md_unplug(mddev_t *mddev);
 
 extern void mddev_init(mddev_t *mddev);
 extern int md_run(mddev_t *mddev);
@@ -530,4 +511,5 @@ extern struct bio *bio_clone_mddev(struct bio *bio, gfp_t gfp_mask,
                                   mddev_t *mddev);
 extern struct bio *bio_alloc_mddev(gfp_t gfp_mask, int nr_iovecs,
                                   mddev_t *mddev);
+extern int mddev_check_plugged(mddev_t *mddev);
 #endif /* _MD_MD_H */