[PATCH RESEND 0/2] squashfs: support linear addressing

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I'm resending this patchset because my previous post couldn't get
reviewed and I was taught that it was not a good timing to get new
patches reviewed.

This patchset enables the SquashFS driver to load data directly from a
linear addressed memory range (such as RAM, NOR flashes, etc.)
instead of going through the block device layer.  This saves some
memory since no intermediate buffering is necessary.

The location of the SquashFs image need to be specified by using the
physaddr=0x******** mount option.
For example,
  mount -t squashfs_linear -o physaddr=0x100000 none /mnt

In addition, the linear SquashFS image can be used as a root file
system.  To actually have the kernel mount this SquashFS image as a
root file system, you must also pass the command line parameter
"root=/dev/null", "rootfstype=squashfs_linear", and
"rootflags=physaddr=0x********" to the kernel (replace 0x******** with
the physical address location of the linear SquashFs image to boot
with).

UCHINO Satoshi (2):
  squashfs: add an extra argument to decompress callback
  squashfs: support linear addressing

 fs/squashfs/Kconfig          |   25 +++++++
 fs/squashfs/block.c          |   72 ++++++++++++++++++---
 fs/squashfs/decompressor.h   |    6 +-
 fs/squashfs/inode.c          |   10 +++
 fs/squashfs/lzo_wrapper.c    |   12 +++-
 fs/squashfs/squashfs.h       |    5 ++
 fs/squashfs/squashfs_fs_sb.h |    2 +
 fs/squashfs/super.c          |  146 +++++++++++++++++++++++++++++++++++++++--
 fs/squashfs/xz_wrapper.c     |    7 ++-
 fs/squashfs/zlib_wrapper.c   |    7 ++-
 10 files changed, 267 insertions(+), 25 deletions(-)
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