Revert "vfs: Avoid unnecessary WB_SYNC_NONE writeback during sys_sync and reorder sync passes"

This reverts commit 214fb021571b45e0f2936d59cf7b8e53c140a12c.
Revert "vfs: Remove unnecessary flushing of block devices"

This reverts commit 71ec68f942692b2bda0568b719de072b201c7fe7.
Revert "vfs: Make sys_sync writeout also block device inodes"

This reverts commit dc01dc49515f0fd751b2ddba5474e5f03dc71975.
Revert "vfs: Reorder operations during sys_sync"

This reverts commit babfb738d22cb466dcab16f12f32b6a76d68fe9e.
Revert "vfs: Move noop_backing_dev_info check from sync into writeback"

This reverts commit 16347de5d86d5cbe9d611e0f038bf167fa86e03e.
Fancy Kernel r59