1 files changed, 28 insertions, 13 deletions

diff --git a/drivers/md/md.c b/drivers/md/md.c
index ed5727c089a9..612343fdde94 100644
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -2017,6 +2017,8 @@ repeat:
         clear_bit(MD_CHANGE_PENDING, &mddev->flags);
         spin_unlock_irq(&mddev->write_lock);
         wake_up(&mddev->sb_wait);
+        if (test_bit(MD_RECOVERY_RUNNING, &mddev->recovery))
+                sysfs_notify(&mddev->kobj, NULL, "sync_completed");
 
 }
 
@@ -2086,6 +2088,7 @@ state_store(mdk_rdev_t *rdev, const char *buf, size_t len)
          *  -writemostly - clears write_mostly
          *  blocked - sets the Blocked flag
          *  -blocked - clears the Blocked flag
+         *  insync - sets Insync providing device isn't active
          */
         int err = -EINVAL;
         if (cmd_match(buf, "faulty") && rdev->mddev->pers) {
@@ -2118,6 +2121,9 @@ state_store(mdk_rdev_t *rdev, const char *buf, size_t len)
                 md_wakeup_thread(rdev->mddev->thread);
 
                 err = 0;
+        } else if (cmd_match(buf, "insync") && rdev->raid_disk == -1) {
+                set_bit(In_sync, &rdev->flags);
+                err = 0;
         }
         if (!err && rdev->sysfs_state)
                 sysfs_notify_dirent(rdev->sysfs_state);
@@ -2190,7 +2196,7 @@ slot_store(mdk_rdev_t *rdev, const char *buf, size_t len)
         } else if (rdev->mddev->pers) {
                 mdk_rdev_t *rdev2;
                 /* Activating a spare .. or possibly reactivating
-                 * if we every get bitmaps working here.
+                 * if we ever get bitmaps working here.
                  */
 
                 if (rdev->raid_disk != -1)
@@ -3482,12 +3488,15 @@ sync_completed_show(mddev_t *mddev, char *page)
 {
         unsigned long max_sectors, resync;
 
+        if (!test_bit(MD_RECOVERY_RUNNING, &mddev->recovery))
+                return sprintf(page, "none\n");
+
         if (test_bit(MD_RECOVERY_SYNC, &mddev->recovery))
                 max_sectors = mddev->resync_max_sectors;
         else
                 max_sectors = mddev->dev_sectors;
 
-        resync = (mddev->curr_resync - atomic_read(&mddev->recovery_active));
+        resync = mddev->curr_resync_completed;
         return sprintf(page, "%lu / %lu\n", resync, max_sectors);
 }
 
@@ -6334,18 +6343,13 @@ void md_do_sync(mddev_t *mddev)
                 sector_t sectors;
 
                 skipped = 0;
-                if (j >= mddev->resync_max) {
-                        sysfs_notify(&mddev->kobj, NULL, "sync_completed");
-                        wait_event(mddev->recovery_wait,
-                                   mddev->resync_max > j
-                                   || kthread_should_stop());
-                }
-                if (kthread_should_stop())
-                        goto interrupted;
 
-                if (mddev->curr_resync > mddev->curr_resync_completed &&
-                    (mddev->curr_resync - mddev->curr_resync_completed)
-                    > (max_sectors >> 4)) {
+                if ((mddev->curr_resync > mddev->curr_resync_completed &&
+                     (mddev->curr_resync - mddev->curr_resync_completed)
+                    > (max_sectors >> 4)) ||
+                    (j - mddev->curr_resync_completed)*2
+                    >= mddev->resync_max - mddev->curr_resync_completed
+                        ) {
                         /* time to update curr_resync_completed */
                         blk_unplug(mddev->queue);
                         wait_event(mddev->recovery_wait,
@@ -6353,7 +6357,17 @@ void md_do_sync(mddev_t *mddev)
                         mddev->curr_resync_completed =
                                 mddev->curr_resync;
                         set_bit(MD_CHANGE_CLEAN, &mddev->flags);
+                        sysfs_notify(&mddev->kobj, NULL, "sync_completed");
                 }
+
+                if (j >= mddev->resync_max)
+                        wait_event(mddev->recovery_wait,
+                                   mddev->resync_max > j
+                                   || kthread_should_stop());
+
+                if (kthread_should_stop())
+                        goto interrupted;
+
                 sectors = mddev->pers->sync_request(mddev, j, &skipped,
                                                   currspeed < speed_min(mddev));
                 if (sectors == 0) {
@@ -6461,6 +6475,7 @@ void md_do_sync(mddev_t *mddev)
 
  skip:
         mddev->curr_resync = 0;
+        mddev->curr_resync_completed = 0;
         mddev->resync_min = 0;
         mddev->resync_max = MaxSector;
         sysfs_notify(&mddev->kobj, NULL, "sync_completed");