Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux...

This is to receive 0a30288da1ae ("blk-mq, percpu_ref: implement a
kludge for SCSI blk-mq stall during probe") which implements
__percpu_ref_kill_expedited() to work around SCSI blk-mq stall.  The
commit reverted and patches to implement proper fix will be added.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Kent Overstreet <kmo@daterainc.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Christoph Hellwig <hch@lst.de>

diff --cc block/blk-mq.c
Simple merge

diff --cc fs/aio.c
Simple merge

diff --cc fs/btrfs/disk-io.c
Simple merge

diff --cc fs/btrfs/extent-tree.c
Simple merge

diff --cc fs/ext3/super.c
Simple merge

diff --cc fs/ext4/super.c
Simple merge

diff --cc include/linux/percpu-refcount.h
Simple merge

diff --cc kernel/cgroup.c
Simple merge

diff --cc lib/percpu-refcount.c
Simple merge

diff --cc mm/mmap.c
Simple merge