pmem, dax: have direct_access use __pmem annotation

Update the annotation for the kaddr pointer returned by direct_access()
so that it is a __pmem pointer.  This is consistent with the PMEM driver
and with how this direct_access() pointer is used in the DAX code.

Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>

diff --cc Documentation/filesystems/Locking
Simple merge

diff --cc arch/powerpc/sysdev/axonram.c
Simple merge

diff --cc drivers/block/brd.c
Simple merge

diff --cc drivers/nvdimm/pmem.c
Simple merge

diff --cc drivers/s390/block/dcssblk.c
Simple merge

diff --cc fs/block_dev.c
Simple merge

diff --cc fs/dax.c
Simple merge

diff --cc include/linux/blkdev.h
Simple merge