|
Lines 729-734
static noinline struct btrfs_device *device_list_add(const char *path,
Link Here
|
| 729 |
bool same_fsid_diff_dev = false; |
729 |
bool same_fsid_diff_dev = false; |
| 730 |
bool has_metadata_uuid = (btrfs_super_incompat_flags(disk_super) & |
730 |
bool has_metadata_uuid = (btrfs_super_incompat_flags(disk_super) & |
| 731 |
BTRFS_FEATURE_INCOMPAT_METADATA_UUID); |
731 |
BTRFS_FEATURE_INCOMPAT_METADATA_UUID); |
|
|
732 |
bool can_create_new = *new_device_added; |
| 732 |
|
733 |
|
| 733 |
if (btrfs_super_flags(disk_super) & BTRFS_SUPER_FLAG_CHANGING_FSID_V2) { |
734 |
if (btrfs_super_flags(disk_super) & BTRFS_SUPER_FLAG_CHANGING_FSID_V2) { |
| 734 |
btrfs_err(NULL, |
735 |
btrfs_err(NULL, |
|
Lines 744-749
static noinline struct btrfs_device *device_list_add(const char *path,
Link Here
|
| 744 |
return ERR_PTR(error); |
745 |
return ERR_PTR(error); |
| 745 |
} |
746 |
} |
| 746 |
|
747 |
|
|
|
748 |
*new_device_added = false; |
| 747 |
fs_devices = find_fsid_by_device(disk_super, path_devt, &same_fsid_diff_dev); |
749 |
fs_devices = find_fsid_by_device(disk_super, path_devt, &same_fsid_diff_dev); |
| 748 |
|
750 |
|
| 749 |
if (!fs_devices) { |
751 |
if (!fs_devices) { |
|
Lines 795-800
static noinline struct btrfs_device *device_list_add(const char *path,
Link Here
|
| 795 |
return ERR_PTR(-EBUSY); |
797 |
return ERR_PTR(-EBUSY); |
| 796 |
} |
798 |
} |
| 797 |
|
799 |
|
|
|
800 |
if (!can_create_new) { |
| 801 |
pr_info( |
| 802 |
"BTRFS: device fsid %pU devid %llu transid %llu %s skip registration scanned by %s (%d)\n", |
| 803 |
disk_super->fsid, devid, found_transid, path, |
| 804 |
current->comm, task_pid_nr(current)); |
| 805 |
mutex_unlock(&fs_devices->device_list_mutex); |
| 806 |
return NULL; |
| 807 |
} |
| 808 |
|
| 798 |
nofs_flag = memalloc_nofs_save(); |
809 |
nofs_flag = memalloc_nofs_save(); |
| 799 |
device = btrfs_alloc_device(NULL, &devid, |
810 |
device = btrfs_alloc_device(NULL, &devid, |
| 800 |
disk_super->dev_item.uuid, path); |
811 |
disk_super->dev_item.uuid, path); |
|
Lines 1346-1372
struct btrfs_device *btrfs_scan_one_device(const char *path, blk_mode_t flags,
Link Here
|
| 1346 |
goto error_bdev_put; |
1357 |
goto error_bdev_put; |
| 1347 |
} |
1358 |
} |
| 1348 |
|
1359 |
|
| 1349 |
if (!mount_arg_dev && btrfs_super_num_devices(disk_super) == 1 && |
1360 |
if (mount_arg_dev || btrfs_super_num_devices(disk_super) != 1 || |
| 1350 |
!(btrfs_super_flags(disk_super) & BTRFS_SUPER_FLAG_SEEDING)) { |
1361 |
(btrfs_super_flags(disk_super) & BTRFS_SUPER_FLAG_SEEDING)) |
| 1351 |
dev_t devt; |
1362 |
new_device_added = true; |
| 1352 |
|
|
|
| 1353 |
ret = lookup_bdev(path, &devt); |
| 1354 |
if (ret) |
| 1355 |
btrfs_warn(NULL, "lookup bdev failed for path %s: %d", |
| 1356 |
path, ret); |
| 1357 |
else |
| 1358 |
btrfs_free_stale_devices(devt, NULL); |
| 1359 |
|
| 1360 |
pr_debug("BTRFS: skip registering single non-seed device %s\n", path); |
| 1361 |
device = NULL; |
| 1362 |
goto free_disk_super; |
| 1363 |
} |
| 1364 |
|
1363 |
|
| 1365 |
device = device_list_add(path, disk_super, &new_device_added); |
1364 |
device = device_list_add(path, disk_super, &new_device_added); |
| 1366 |
if (!IS_ERR(device) && new_device_added) |
1365 |
if (!IS_ERR(device) && new_device_added) |
| 1367 |
btrfs_free_stale_devices(device->devt, device); |
1366 |
btrfs_free_stale_devices(device->devt, device); |
| 1368 |
|
1367 |
|
| 1369 |
free_disk_super: |
|
|
| 1370 |
btrfs_release_disk_super(disk_super); |
1368 |
btrfs_release_disk_super(disk_super); |
| 1371 |
|
1369 |
|
| 1372 |
error_bdev_put: |
1370 |
error_bdev_put: |
