[PATCH v2 0/4] brd: sanity checks and dynamic ram disk creation/destroying

[Hannes Frederic Sowa]

While toying around with a library which needs small block devices for
quorum management, I came up with these patches to dynamically create
and destroy ram disks (I wanted to have non-swappable backed devices).

Change log (since RFC patch <20121014024836.GB27966@xxxxxxxxxxxxxxxxxxxxxxxxx>):
1) module parameters(rd_nr, rd_size, max_part) are now unsigned ints
2) check for active users of ram disk before BLKFLSBUFing
3) switched from lists to idrs for device management

Change log (since patch v1 <1350757943-24981-1-git-send-email-hannes@xxxxxxxxxxxxxxxxxxx>):
1) rebase to v3.7 (in conformance to uapi-header changes)
2) convert simple_stroul to kstrtoul
3) make rd_size static as the last user has vanished

These patches are diffed against v3.7:

 Documentation/ioctl/ioctl-number.txt |   1 +
 block/partition-generic.c            |   1 +
 drivers/block/brd.c                  | 361 +++++++++++++++++++++++++++++------
 include/linux/miscdevice.h           |   1 +
 include/uapi/linux/Kbuild            |   1 +
 include/uapi/linux/brd.h             |  12 ++
 6 files changed, 314 insertions(+), 63 deletions(-)

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