Hi all, this series removes the annoying struct block_device aliases, which can happen for a bunch of old floppy drivers (and z2ram). In that case multiple struct block device instances for different dev_t's can point to the same gendisk, without being partitions. The cause for that is the probe/get callback registered through blk_register_regions. This series removes blk_register_region entirely, splitting it it into a simple xarray lookup of registered gendisks, and a probe callback stored in the major_names array that can be used for modprobe overrides or creating devices on demands when no gendisk is found. The old remapping is gone entirely, and instead the 4 remaining drivers just register a gendisk for each operating mode. In case of the two drivers that have lots of aliases that is done on-demand using the new probe callback, while for the other two I simply register all at probe time to keep things simple. Note that the m68k drivers are compile tested only. Changes since v1: - add back a missing kobject_put in the cdev code - improve the xarray delete loops Diffstat: b/block/genhd.c | 183 +++++++-------- b/drivers/base/Makefile | 2 b/drivers/block/amiflop.c | 98 ++++---- b/drivers/block/ataflop.c | 135 +++++++---- b/drivers/block/brd.c | 39 --- b/drivers/block/floppy.c | 154 ++++++++---- b/drivers/block/loop.c | 30 -- b/drivers/block/swim.c | 17 - b/drivers/block/z2ram.c | 547 ++++++++++++++++++++++------------------------ b/drivers/ide/ide-probe.c | 66 ----- b/drivers/ide/ide-tape.c | 2 b/drivers/md/md.c | 21 - b/drivers/scsi/sd.c | 19 - b/fs/char_dev.c | 94 +++---- b/fs/dcache.c | 1 b/fs/internal.h | 5 b/include/linux/genhd.h | 12 - b/include/linux/ide.h | 3 drivers/base/map.c | 154 ------------ include/linux/kobj_map.h | 20 - 20 files changed, 686 insertions(+), 916 deletions(-)
