X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=fs%2FKconfig;h=e9f181d7ecf9099b3c35056d9b74b5eb8f7a3d7c;hb=a030541d6dd71712d1989c26d9e63a698c64d5d8;hp=75b7c0785330fed5007f2b650ef96128d2cab7a9;hpb=3c0f84cf4c70d1bcbffe135dade50fad833f0cf4;p=linux-2.6.git diff --git a/fs/Kconfig b/fs/Kconfig index 75b7c0785..e9f181d7e 100644 --- a/fs/Kconfig +++ b/fs/Kconfig @@ -1285,6 +1285,71 @@ config CRAMFS If unsure, say N. +config SQUASHFS + tristate "SquashFS 3.0 - Squashed file system support" + select ZLIB_INFLATE + help + Saying Y here includes support for SquashFS 3.0 (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 64K. + SquashFS 3.0 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 filesystem 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 . 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. + config VXFS_FS tristate "FreeVxFS file system support (VERITAS VxFS(TM) compatible)" help