Jens, can you take a look and possibly pick this series up? On Thu, Oct 29, 2020 at 03:58:23PM +0100, Christoph Hellwig wrote: > 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 v3: > - keep kobj_map for char dev lookup for now, as the testbot found > some very strange and unexplained regressions, so I'll get back to > this later separately > - fix a commit message typo > > Changes since v2: > - fix a wrong variable passed to ERR_PTR in the floppy driver > - slightly adjust the del_gendisk cleanups to prepare for the next > series touching this area > > Changes since v1: > - add back a missing kobject_put in the cdev code > - improve the xarray delete loops ---end quoted text---
