Revert "block: use DAX for partition table reads"
authorDan Williams <dan.j.williams@intel.com>
Fri, 27 Jan 2017 22:13:15 +0000 (14:13 -0800)
committerDan Williams <dan.j.williams@intel.com>
Tue, 25 Apr 2017 20:20:46 +0000 (13:20 -0700)
commita41fe02b6bba853a29c864d00fd161bbe6cfc715
tree7060e9ed2234c8b6b2cc99523f18ed66bddba33a
parentfa5d932c323e8e0d9b24b3517997d15b36d1607d
Revert "block: use DAX for partition table reads"

commit d1a5f2b4d8a1 ("block: use DAX for partition table reads") was
part of a stalled effort to allow dax mappings of block devices. Since
then the device-dax mechanism has filled the role of dax-mapping static
device ranges.

Now that we are moving ->direct_access() from a block_device operation
to a dax_inode operation we would need block devices to map and carry
their own dax_inode reference.

Unless / until we decide to revive dax mapping of raw block devices
through the dax_inode scheme, there is no need to carry
read_dax_sector(). Its removal in turn allows for the removal of
bdev_direct_access() and should have been included in commit
223757016837 ("block_dev: remove DAX leftovers").

Cc: Jeff Moyer <jmoyer@redhat.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
block/partition-generic.c
fs/dax.c
include/linux/dax.h