config SQUASHFS
	tristate "SquashFS 2.0 - Squashed file system support"
	depends on BLOCK
	select CRYPTO
	help
	  Saying Y here includes support for SquashFS 4.0 (a Compressed
	  Read-Only File System).  Squashfs is a highly compressed read-only
	  filesystem for Linux.  It uses zlib compression to compress both
	  files, inodes and directories.  Inodes in the system are very small
	  and all blocks are packed to minimise data overhead. Block sizes
	  greater than 4K are supported up to a maximum of 1 Mbytes (default
	  block size 128K).  SquashFS 4.0 supports 64 bit filesystems and files
	  (larger than 4GB), full uid/gid information, hard links and
	  timestamps.  

	  Squashfs is intended for general read-only filesystem use, for
	  archival use (i.e. in cases where a .tar.gz file may be used), and in
	  embedded systems where low overhead is needed.  Further information
	  and tools are available from http://squashfs.sourceforge.net.

	  If you want to compile this as a module ( = code which can be
	  inserted in and removed from the running kernel whenever you want),
	  say M here and read <file:Documentation/modules.txt>.  The module
	  will be called squashfs.  Note that the root file system (the one
	  containing the directory /) cannot be compiled as a module.

	  If unsure, say N.

config SQUASHFS_EMBEDDED

    bool "Additional options for memory-constrained systems"
    depends on SQUASHFS
    default n
    help
      Saying Y here allows you to specify cache sizes and how Squashfs
      allocates memory.  This is only intended for memory constrained
      systems.

      If unsure, say N.


config SQUASHFS_FRAGMENT_CACHE_SIZE
    int "Number of fragments cached" if SQUASHFS_EMBEDDED
    depends on SQUASHFS
    default "3"
    help
      By default SquashFS caches the last 3 fragments read from
      the filesystem.  Increasing this amount may mean SquashFS
      has to re-read fragments less often from disk, at the expense
      of extra system memory.  Decreasing this amount will mean
      SquashFS uses less memory at the expense of extra reads from disk.

      Note there must be at least one cached fragment.  Anything
      much more than three will probably not make much difference.


config SQUASHFS_VMALLOC
    bool "Use Vmalloc rather than Kmalloc" if SQUASHFS_EMBEDDED
    depends on SQUASHFS
    default n
    help
      By default SquashFS uses kmalloc to obtain fragment cache memory.
      Kmalloc memory is the standard kernel allocator, but it can fail
      on memory constrained systems.  Because of the way Vmalloc works,
      Vmalloc can succeed when kmalloc fails.  Specifying this option
      will make SquashFS always use Vmalloc to allocate the
      fragment cache memory.

      If unsure, say N.
