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Diffstat (limited to 'ANDROID_3.4.5/fs/squashfs/Kconfig')
| -rw-r--r-- | ANDROID_3.4.5/fs/squashfs/Kconfig | 123 |
1 files changed, 0 insertions, 123 deletions
diff --git a/ANDROID_3.4.5/fs/squashfs/Kconfig b/ANDROID_3.4.5/fs/squashfs/Kconfig deleted file mode 100644 index c70111eb..00000000 --- a/ANDROID_3.4.5/fs/squashfs/Kconfig +++ /dev/null @@ -1,123 +0,0 @@ -config SQUASHFS - tristate "SquashFS 4.0 - Squashed file system support" - depends on BLOCK - 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, lzo or xz 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. 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_XATTR - bool "Squashfs XATTR support" - depends on SQUASHFS - help - Saying Y here includes support for extended attributes (xattrs). - Xattrs are name:value pairs associated with inodes by - the kernel or by users (see the attr(5) manual page). - - If unsure, say N. - -config SQUASHFS_ZLIB - bool "Include support for ZLIB compressed file systems" - depends on SQUASHFS - select ZLIB_INFLATE - default y - help - ZLIB compression is the standard compression used by Squashfs - file systems. It offers a good trade-off between compression - achieved and the amount of CPU time and memory necessary to - compress and decompress. - - If unsure, say Y. - -config SQUASHFS_LZO - bool "Include support for LZO compressed file systems" - depends on SQUASHFS - select LZO_DECOMPRESS - help - Saying Y here includes support for reading Squashfs file systems - compressed with LZO compression. LZO compression is mainly - aimed at embedded systems with slower CPUs where the overheads - of zlib are too high. - - LZO is not the standard compression used in Squashfs and so most - file systems will be readable without selecting this option. - - If unsure, say N. - -config SQUASHFS_XZ - bool "Include support for XZ compressed file systems" - depends on SQUASHFS - select XZ_DEC - help - Saying Y here includes support for reading Squashfs file systems - compressed with XZ compression. XZ gives better compression than - the default zlib compression, at the expense of greater CPU and - memory overhead. - - XZ is not the standard compression used in Squashfs and so most - file systems will be readable without selecting this option. - - If unsure, say N. - -config SQUASHFS_4K_DEVBLK_SIZE - bool "Use 4K device block size?" - depends on SQUASHFS - help - By default Squashfs sets the dev block size (sb_min_blocksize) - to 1K or the smallest block size supported by the block device - (if larger). This, because blocks are packed together and - unaligned in Squashfs, should reduce latency. - - This, however, gives poor performance on MTD NAND devices where - the optimal I/O size is 4K (even though the devices can support - smaller block sizes). - - Using a 4K device block size may also improve overall I/O - performance for some file access patterns (e.g. sequential - accesses of files in filesystem order) on all media. - - Setting this option will force Squashfs to use a 4K device block - size by default. - - If unsure, say N. - -config SQUASHFS_EMBEDDED - bool "Additional option for memory-constrained systems" - depends on SQUASHFS - help - Saying Y here allows you to specify cache size. - - 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. |