Subject: [PATCH] md:change resync_mismatches to atomic64_t to avoid races

[deliverable/linux.git] / drivers / md / md.h

diff --git a/drivers/md/md.h b/drivers/md/md.h
index f385b038589d32313014e07af203b8f742bec4a7..af443ab868db910f2db2d35d53ffacca701f1e60 100644 (file)
--- a/drivers/md/md.h
+++ b/drivers/md/md.h
@@ -282,7 +282,7 @@ struct mddev {
 
        sector_t                        resync_max_sectors; /* may be set by personality */
 
-       sector_t                        resync_mismatches; /* count of sectors where
+       atomic64_t                      resync_mismatches; /* count of sectors where
                                                            * parity/replica mismatch found
                                                            */
 
@@ -540,12 +540,13 @@ static inline void sysfs_unlink_rdev(struct mddev *mddev, struct md_rdev *rdev)
        list_for_each_entry_rcu(rdev, &((mddev)->disks), same_set)
 
 struct md_thread {
-       void                    (*run) (struct mddev *mddev);
+       void                    (*run) (struct md_thread *thread);
        struct mddev            *mddev;
        wait_queue_head_t       wqueue;
        unsigned long           flags;
        struct task_struct      *tsk;
        unsigned long           timeout;
+       void                    *private;
 };
 
 #define THREAD_WAKEUP  0
@@ -584,7 +585,7 @@ static inline void safe_put_page(struct page *p)
 extern int register_md_personality(struct md_personality *p);
 extern int unregister_md_personality(struct md_personality *p);
 extern struct md_thread *md_register_thread(
-       void (*run)(struct mddev *mddev),
+       void (*run)(struct md_thread *thread),
        struct mddev *mddev,
        const char *name);
 extern void md_unregister_thread(struct md_thread **threadp);
@@ -603,7 +604,7 @@ extern void md_super_write(struct mddev *mddev, struct md_rdev *rdev,
 extern void md_super_wait(struct mddev *mddev);
 extern int sync_page_io(struct md_rdev *rdev, sector_t sector, int size, 
                        struct page *page, int rw, bool metadata_op);
-extern void md_do_sync(struct mddev *mddev);
+extern void md_do_sync(struct md_thread *thread);
 extern void md_new_event(struct mddev *mddev);
 extern int md_allow_write(struct mddev *mddev);
 extern void md_wait_for_blocked_rdev(struct md_rdev *rdev, struct mddev *mddev);