[PATCHv2 0/7] introduce dynamic device creation/removal

[Sergey Senozhatsky <sergey.senozhatsky@gmail.com>]

Hello,

This patchset introduces zram-control sysfs class, which has two sysfs
attrs:
 - zram_add	-- add a new specific (device_id) zram device
 - zram_remove	-- remove a specific (device_id) zram device


    Usage example:
        # add a new specific zram device
        echo 4 > /sys/class/zram-control/zram_add

        # remove a specific zram device
        echo 4 > /sys/class/zram-control/zram_remove


Patch set also does some cleanups and huge code reorganization.

v2:
switch to sysfs class, rather than using /dev/zram-control node and
doing IOCTL on it. we lose some features, though. like automatic
device_id generation.

Sergey Senozhatsky (7):
  zram: cosmetic ZRAM_ATTR_RO code formatting tweak
  zram: use idr instead of `zram_devices' array
  zram: factor out device reset from reset_store()
  zram: reorganize code layout
  zram: add dynamic device add/remove functionality
  zram: remove max_num_devices limitation
  zram: report every added and removed device

 Documentation/ABI/testing/sysfs-class-zram |  23 +
 drivers/block/zram/zram_drv.c              | 780 +++++++++++++++++------------
 drivers/block/zram/zram_drv.h              |   6 -
 3 files changed, 474 insertions(+), 335 deletions(-)
 create mode 100644 Documentation/ABI/testing/sysfs-class-zram

-- 
2.3.1.167.g7f4ba4b