sizeof(struct btrfs_item))
 struct btrfs_dev_replace {
        u64 replace_state;      /* see #define above */
-       u64 time_started;       /* seconds since 1-Jan-1970 */
-       u64 time_stopped;       /* seconds since 1-Jan-1970 */
+       time64_t time_started;  /* seconds since 1-Jan-1970 */
+       time64_t time_stopped;  /* seconds since 1-Jan-1970 */
        atomic64_t num_write_errors;
        atomic64_t num_uncorrectable_read_errors;
 
 
         * go to the tgtdev as well (refer to btrfs_map_block()).
         */
        dev_replace->replace_state = BTRFS_IOCTL_DEV_REPLACE_STATE_STARTED;
-       dev_replace->time_started = get_seconds();
+       dev_replace->time_started = ktime_get_real_seconds();
        dev_replace->cursor_left = 0;
        dev_replace->committed_cursor_left = 0;
        dev_replace->cursor_left_last_write_of_item = 0;
                          : BTRFS_IOCTL_DEV_REPLACE_STATE_FINISHED;
        dev_replace->tgtdev = NULL;
        dev_replace->srcdev = NULL;
-       dev_replace->time_stopped = get_seconds();
+       dev_replace->time_stopped = ktime_get_real_seconds();
        dev_replace->item_needs_writeback = 1;
 
        /* replace old device with new one in mapping tree */
                break;
        }
        dev_replace->replace_state = BTRFS_IOCTL_DEV_REPLACE_STATE_CANCELED;
-       dev_replace->time_stopped = get_seconds();
+       dev_replace->time_stopped = ktime_get_real_seconds();
        dev_replace->item_needs_writeback = 1;
        btrfs_dev_replace_write_unlock(dev_replace);
        btrfs_scrub_cancel(fs_info);
        case BTRFS_IOCTL_DEV_REPLACE_STATE_STARTED:
                dev_replace->replace_state =
                        BTRFS_IOCTL_DEV_REPLACE_STATE_SUSPENDED;
-               dev_replace->time_stopped = get_seconds();
+               dev_replace->time_stopped = ktime_get_real_seconds();
                dev_replace->item_needs_writeback = 1;
                btrfs_info(fs_info, "suspending dev_replace for unmount");
                break;
 
        struct btrfs_trans_handle *trans;
        struct btrfs_transaction *cur;
        u64 transid;
-       unsigned long now;
+       time64_t now;
        unsigned long delay;
        bool cannot_commit;
 
                        goto sleep;
                }
 
-               now = get_seconds();
+               now = ktime_get_real_seconds();
                if (cur->state < TRANS_STATE_BLOCKED &&
                    !test_bit(BTRFS_FS_NEED_ASYNC_COMMIT, &fs_info->flags) &&
                    (now < cur->start_time ||
 
        refcount_set(&cur_trans->use_count, 2);
        atomic_set(&cur_trans->pending_ordered, 0);
        cur_trans->flags = 0;
-       cur_trans->start_time = get_seconds();
+       cur_trans->start_time = ktime_get_real_seconds();
 
        memset(&cur_trans->delayed_refs, 0, sizeof(cur_trans->delayed_refs));