[PATCH 0/2] make automatic device_id generation possible

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

Hello,

Make zram-contol/zram_add interface easier to use. Extend it to support
read and write operations.

Write operation remains the same:

	echo X > /sys/class/zram-control/zram_add

will add /dev/zramX (or return error).


Read operation is treated as 'pick up available device_id, add new
device and return device_id'.

Example:
	 cat /sys/class/zram-control/zram_add
	2
	 cat /sys/class/zram-control/zram_add
	3

Sergey Senozhatsky (2):
  zram: return zram device_id value from zram_add()
  zram: introduce automatic device_id generation

 Documentation/ABI/testing/sysfs-class-zram |  7 ++++--
 Documentation/blockdev/zram.txt            | 10 ++++++++
 drivers/block/zram/zram_drv.c              | 37 ++++++++++++++++++++++++++----
 3 files changed, 47 insertions(+), 7 deletions(-)

-- 
2.3.1.167.g7f4ba4b