diff options
| -rw-r--r-- | drivers/md/md.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/md/md.c b/drivers/md/md.c index 459f1899f383..43728a42fccf 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -8797,6 +8797,7 @@ EXPORT_SYMBOL(md_reload_sb); * at boot time. */ +static DEFINE_MUTEX(detected_devices_mutex); static LIST_HEAD(all_detected_devices); struct detected_devices_node { struct list_head list; @@ -8810,7 +8811,9 @@ void md_autodetect_dev(dev_t dev) node_detected_dev = kzalloc(sizeof(*node_detected_dev), GFP_KERNEL); if (node_detected_dev) { node_detected_dev->dev = dev; + mutex_lock(&detected_devices_mutex); list_add_tail(&node_detected_dev->list, &all_detected_devices); + mutex_unlock(&detected_devices_mutex); } else { printk(KERN_CRIT "md: md_autodetect_dev: kzalloc failed" ", skipping dev(%d,%d)\n", MAJOR(dev), MINOR(dev)); @@ -8829,6 +8832,7 @@ static void autostart_arrays(int part) printk(KERN_INFO "md: Autodetecting RAID arrays.\n"); + mutex_lock(&detected_devices_mutex); while (!list_empty(&all_detected_devices) && i_scanned < INT_MAX) { i_scanned++; node_detected_dev = list_entry(all_detected_devices.next, @@ -8847,6 +8851,7 @@ static void autostart_arrays(int part) list_add(&rdev->same_set, &pending_raid_disks); i_passed++; } + mutex_unlock(&detected_devices_mutex); printk(KERN_INFO "md: Scanned %d and added %d devices.\n", i_scanned, i_passed); |