return ret;
}
-static bool device_path_matched(const char *path, struct btrfs_device *device)
+/*
+ * Check if the device in the path matches the device in the given struct device.
+ *
+ * Returns:
+ * true If it is the same device.
+ * false If it is not the same device or on error.
+ */
+static bool device_matched(const struct btrfs_device *device, const char *path)
{
- int found;
+ char *device_name;
+ dev_t dev_old;
+ dev_t dev_new;
+ int ret;
+
+ /*
+ * If we are looking for a device with the matching dev_t, then skip
+ * device without a name (a missing device).
+ */
+ if (!device->name)
+ return false;
+
+ device_name = kzalloc(BTRFS_PATH_NAME_MAX, GFP_KERNEL);
+ if (!device_name)
+ return false;
rcu_read_lock();
- found = strcmp(rcu_str_deref(device->name), path);
+ scnprintf(device_name, BTRFS_PATH_NAME_MAX, "%s", rcu_str_deref(device->name));
rcu_read_unlock();
- return found == 0;
+ ret = lookup_bdev(device_name, &dev_old);
+ kfree(device_name);
+ if (ret)
+ return false;
+
+ ret = lookup_bdev(path, &dev_new);
+ if (ret)
+ return false;
+
+ if (dev_old == dev_new)
+ return true;
+
+ return false;
}
/*
&fs_devices->devices, dev_list) {
if (skip_device && skip_device == device)
continue;
- if (path && !device->name)
- continue;
- if (path && !device_path_matched(path, device))
+ if (path && !device_matched(device, path))
continue;
if (fs_devices->opened) {
/* for an already deleted device return 0 */
bytenr_orig = btrfs_sb_offset(0);
ret = btrfs_sb_log_location_bdev(bdev, 0, READ, &bytenr);
- if (ret)
- return ERR_PTR(ret);
+ if (ret) {
+ device = ERR_PTR(ret);
+ goto error_bdev_put;
+ }
disk_super = btrfs_read_disk_super(bdev, bytenr, bytenr_orig);
if (IS_ERR(disk_super)) {
key.type = BTRFS_DEV_ITEM_KEY;
key.offset = device->devid;
+ btrfs_reserve_chunk_metadata(trans, true);
ret = btrfs_insert_empty_item(trans, trans->fs_info->chunk_root, path,
&key, sizeof(*dev_item));
+ btrfs_trans_release_chunk_metadata(trans);
if (ret)
goto out;
key.type = BTRFS_DEV_ITEM_KEY;
key.offset = device->devid;
+ btrfs_reserve_chunk_metadata(trans, false);
ret = btrfs_search_slot(trans, root, &key, path, -1, 1);
+ btrfs_trans_release_chunk_metadata(trans);
if (ret) {
if (ret > 0)
ret = -ENOENT;
key.type = BTRFS_DEV_ITEM_KEY;
while (1) {
+ btrfs_reserve_chunk_metadata(trans, false);
ret = btrfs_search_slot(trans, root, &key, path, 0, 1);
+ btrfs_trans_release_chunk_metadata(trans);
if (ret < 0)
goto error;
device->fs_info = fs_info;
device->bdev = bdev;
- ret = btrfs_get_dev_zone_info(device);
+ ret = btrfs_get_dev_zone_info(device, false);
if (ret)
goto error_free_device;
struct btrfs_super_block *super_copy = fs_info->super_copy;
u64 old_total;
u64 diff;
+ int ret;
if (!test_bit(BTRFS_DEV_STATE_WRITEABLE, &device->dev_state))
return -EACCES;
&trans->transaction->dev_update_list);
mutex_unlock(&fs_info->chunk_mutex);
- return btrfs_update_device(trans, device);
+ btrfs_reserve_chunk_metadata(trans, false);
+ ret = btrfs_update_device(trans, device);
+ btrfs_trans_release_chunk_metadata(trans);
+
+ return ret;
}
static int btrfs_free_chunk(struct btrfs_trans_handle *trans, u64 chunk_offset)
const u64 sys_flags = btrfs_system_alloc_profile(fs_info);
struct btrfs_block_group *sys_bg;
- sys_bg = btrfs_alloc_chunk(trans, sys_flags);
+ sys_bg = btrfs_create_chunk(trans, sys_flags);
if (IS_ERR(sys_bg)) {
ret = PTR_ERR(sys_bg);
btrfs_abort_transaction(trans, ret);
struct btrfs_fs_info *fs_info = data;
int ret = 0;
+ sb_start_write(fs_info->sb);
mutex_lock(&fs_info->balance_mutex);
if (fs_info->balance_ctl)
ret = btrfs_balance(fs_info, fs_info->balance_ctl, NULL);
mutex_unlock(&fs_info->balance_mutex);
+ sb_end_write(fs_info->sb);
return ret;
}
round_down(old_total - diff, fs_info->sectorsize));
mutex_unlock(&fs_info->chunk_mutex);
+ btrfs_reserve_chunk_metadata(trans, false);
/* Now btrfs_update_device() will change the on-disk size. */
ret = btrfs_update_device(trans, device);
+ btrfs_trans_release_chunk_metadata(trans);
if (ret < 0) {
btrfs_abort_transaction(trans, ret);
btrfs_end_transaction(trans);
}
/*
- * Structure used internally for __btrfs_alloc_chunk() function.
+ * Structure used internally for btrfs_create_chunk() function.
* Wraps needed parameters.
*/
struct alloc_chunk_ctl {
return block_group;
}
-struct btrfs_block_group *btrfs_alloc_chunk(struct btrfs_trans_handle *trans,
+struct btrfs_block_group *btrfs_create_chunk(struct btrfs_trans_handle *trans,
u64 type)
{
struct btrfs_fs_info *info = trans->fs_info;
*/
alloc_profile = btrfs_metadata_alloc_profile(fs_info);
- meta_bg = btrfs_alloc_chunk(trans, alloc_profile);
+ meta_bg = btrfs_create_chunk(trans, alloc_profile);
if (IS_ERR(meta_bg))
return PTR_ERR(meta_bg);
alloc_profile = btrfs_system_alloc_profile(fs_info);
- sys_bg = btrfs_alloc_chunk(trans, alloc_profile);
+ sys_bg = btrfs_create_chunk(trans, alloc_profile);
if (IS_ERR(sys_bg))
return PTR_ERR(sys_bg);
* do another round of validation checks.
*/
if (total_dev != fs_info->fs_devices->total_devices) {
- btrfs_err(fs_info,
- "super_num_devices %llu mismatch with num_devices %llu found here",
+ btrfs_warn(fs_info,
+"super block num_devices %llu mismatch with DEV_ITEM count %llu, will be repaired on next transaction commit",
btrfs_super_num_devices(fs_info->super_copy),
total_dev);
- ret = -EINVAL;
- goto error;
+ fs_info->fs_devices->total_devices = total_dev;
+ btrfs_set_super_num_devices(fs_info->super_copy, total_dev);
}
if (btrfs_super_total_bytes(fs_info->super_copy) <
fs_info->fs_devices->total_rw_bytes) {
target = cache->start;
btrfs_put_block_group(cache);
+ sb_start_write(fs_info->sb);
if (!btrfs_exclop_start(fs_info, BTRFS_EXCLOP_BALANCE)) {
btrfs_info(fs_info,
"zoned: skip relocating block group %llu to repair: EBUSY",
target);
+ sb_end_write(fs_info->sb);
return -EBUSY;
}
btrfs_put_block_group(cache);
mutex_unlock(&fs_info->reclaim_bgs_lock);
btrfs_exclop_finish(fs_info);
+ sb_end_write(fs_info->sb);
return ret;
}
projects / platform / kernel / linux-rpi.git / blobdiff