Dear stable tree maintainers: Please pick the following commits that should be pulled into stable but missed the `Cc` tag to make it happen automatically. I have checked with Coly, the bcache maintainer, and he agrees that they should go into stable: d55f7cb2e5c0 bcache: fix error info in register_bcache() 7b1002f7cfe5 bcache: fixup bcache_dev_sectors_dirty_add() multithreaded CPU false sharing a1a2d8f0162b bcache: avoid unnecessary soft lockup in kworker update_writeback_rate() # NOTICE: These two depend on each other, so apply both or neither! 0259d4498ba4 bcache: move calc_cached_dev_sectors to proper place on backing device detach aa97f6cdb7e9 bcache: fix NULL pointer reference in cached_dev_detach_finish Thanks! -- Eric Wheeler
