Merge branch 'for-linus' of git://neil.brown.name/md

[pandora-kernel.git] / drivers / md / md.c

diff --git a/drivers/md/md.c b/drivers/md/md.c
index 84acfe7..f47f1f8 100644 (file)
--- a/drivers/md/md.c
+++ b/drivers/md/md.c
@@ -570,7 +570,7 @@ static void mddev_put(struct mddev *mddev)
            mddev->ctime == 0 && !mddev->hold_active) {
                /* Array is not configured at all, and not held active,
                 * so destroy it */
-               list_del(&mddev->all_mddevs);
+               list_del_init(&mddev->all_mddevs);
                bs = mddev->bio_set;
                mddev->bio_set = NULL;
                if (mddev->gendisk) {
@@ -2546,7 +2546,8 @@ state_show(struct md_rdev *rdev, char *page)
                sep = ",";
        }
        if (test_bit(Blocked, &rdev->flags) ||
-           rdev->badblocks.unacked_exist) {
+           (rdev->badblocks.unacked_exist
+            && !test_bit(Faulty, &rdev->flags))) {
                len += sprintf(page+len, "%sblocked", sep);
                sep = ",";
        }
@@ -3788,6 +3789,8 @@ array_state_store(struct mddev *mddev, const char *buf, size_t len)
        if (err)
                return err;
        else {
+               if (mddev->hold_active == UNTIL_IOCTL)
+                       mddev->hold_active = 0;
                sysfs_notify_dirent_safe(mddev->sysfs_state);
                return len;
        }
@@ -4487,11 +4490,20 @@ md_attr_show(struct kobject *kobj, struct attribute *attr, char *page)
 
        if (!entry->show)
                return -EIO;
+       spin_lock(&all_mddevs_lock);
+       if (list_empty(&mddev->all_mddevs)) {
+               spin_unlock(&all_mddevs_lock);
+               return -EBUSY;
+       }
+       mddev_get(mddev);
+       spin_unlock(&all_mddevs_lock);
+
        rv = mddev_lock(mddev);
        if (!rv) {
                rv = entry->show(mddev, page);
                mddev_unlock(mddev);
        }
+       mddev_put(mddev);
        return rv;
 }
 
@@ -4507,13 +4519,19 @@ md_attr_store(struct kobject *kobj, struct attribute *attr,
                return -EIO;
        if (!capable(CAP_SYS_ADMIN))
                return -EACCES;
+       spin_lock(&all_mddevs_lock);
+       if (list_empty(&mddev->all_mddevs)) {
+               spin_unlock(&all_mddevs_lock);
+               return -EBUSY;
+       }
+       mddev_get(mddev);
+       spin_unlock(&all_mddevs_lock);
        rv = mddev_lock(mddev);
-       if (mddev->hold_active == UNTIL_IOCTL)
-               mddev->hold_active = 0;
        if (!rv) {
                rv = entry->store(mddev, page, length);
                mddev_unlock(mddev);
        }
+       mddev_put(mddev);
        return rv;
 }
 
@@ -7342,8 +7360,7 @@ static int remove_and_add_spares(struct mddev *mddev)
                                        spares++;
                                        md_new_event(mddev);
                                        set_bit(MD_CHANGE_DEVS, &mddev->flags);
-                               } else
-                                       break;
+                               }
                        }
                }
        }
@@ -7840,6 +7857,7 @@ int rdev_set_badblocks(struct md_rdev *rdev, sector_t s, int sectors,
                                  s + rdev->data_offset, sectors, acknowledged);
        if (rv) {
                /* Make sure they get written out promptly */
+               sysfs_notify_dirent_safe(rdev->sysfs_state);
                set_bit(MD_CHANGE_CLEAN, &rdev->mddev->flags);
                md_wakeup_thread(rdev->mddev->thread);
        }