Btrfs: Add support for labels in the super block

Signed-off-by: Chris Mason <chris.mason@oracle.com>

1 files changed, 9 insertions, 8 deletions

diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index cdf0019cca2e..93aa36e2436e 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -57,9 +57,7 @@ int btrfs_cleanup_fs_uuids(void)
                         devices_cur = fs_devices->devices.next;
                         dev = list_entry(devices_cur, struct btrfs_device,
                                          dev_list);
-                        printk("uuid cleanup finds %s\n", dev->name);
                         if (dev->bdev) {
-                                printk("closing\n");
                                 close_bdev_excl(dev->bdev);
                         }
                         list_del(&dev->dev_list);
@@ -149,7 +147,6 @@ static int device_list_add(const char *path,
         }
         if (fs_devices->lowest_devid > devid) {
                 fs_devices->lowest_devid = devid;
-                printk("lowest devid now %Lu\n", devid);
         }
         *fs_devices_ret = fs_devices;
         return 0;
@@ -166,7 +163,6 @@ int btrfs_close_devices(struct btrfs_fs_devices *fs_devices)
                 device = list_entry(cur, struct btrfs_device, dev_list);
                 if (device->bdev) {
                         close_bdev_excl(device->bdev);
-                        printk("close devices closes %s\n", device->name);
                 }
                 device->bdev = NULL;
         }
@@ -220,11 +216,9 @@ int btrfs_scan_one_device(const char *path, int flags, void *holder,
 
         mutex_lock(&uuid_mutex);
 
-        printk("scan one opens %s\n", path);
         bdev = open_bdev_excl(path, flags, holder);
 
         if (IS_ERR(bdev)) {
-                printk("open failed\n");
                 ret = PTR_ERR(bdev);
                 goto error;
         }
@@ -240,13 +234,20 @@ int btrfs_scan_one_device(const char *path, int flags, void *holder,
         disk_super = (struct btrfs_super_block *)bh->b_data;
         if (strncmp((char *)(&disk_super->magic), BTRFS_MAGIC,
             sizeof(disk_super->magic))) {
-                printk("no btrfs found on %s\n", path);
                 ret = -EINVAL;
                 goto error_brelse;
         }
         devid = le64_to_cpu(disk_super->dev_item.devid);
         transid = btrfs_super_generation(disk_super);
-        printk("found device %Lu transid %Lu on %s\n", devid, transid, path);
+        if (disk_super->label[0])
+                printk("device label %s ", disk_super->label);
+        else {
+                /* FIXME, make a readl uuid parser */
+                printk("device fsid %llx-%llx ",
+                       *(unsigned long long *)disk_super->fsid,
+                       *(unsigned long long *)(disk_super->fsid + 8));
+        }
+        printk("devid %Lu transid %Lu %s\n", devid, transid, path);
         ret = device_list_add(path, disk_super, devid, fs_devices_ret);
 
 error_brelse: