[PATCH 0/4] loop: enable different physical blocksizes

[Hannes Reinecke <hare@suse.de>]

Currently the loop driver just simulates 512-byte blocks. When
creating images for virtual machines it might be required to use
a different physical blocksize (eg 4k for S/390 DASD).
This patchset extends the current LOOP_SET_STATUS64 ioctl to
set the logical and physical blocksize by re-using the existing
'init' fields, which are currently unused.

As usual, comments and reviews are welcome.

Hannes Reinecke (4):
  loop: Enable correct physical blocksize
  loop: Remove unused 'bdev' argument from loop_set_capacity
  loop: Add 'lo_logical_blocksize'
  loop: Pass logical blocksize in 'lo_init[0]' ioctl field

 drivers/block/loop.c      | 35 ++++++++++++++++++++++++++++++-----
 drivers/block/loop.h      |  1 +
 include/uapi/linux/loop.h |  1 +
 3 files changed, 32 insertions(+), 5 deletions(-)

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1.8.5.2