| config UBIFS_FS |
| tristate "UBIFS file system support" |
| select CRC16 |
| select CRC32 |
| select CRYPTO if UBIFS_FS_ADVANCED_COMPR |
| select CRYPTO if UBIFS_FS_LZO |
| select CRYPTO if UBIFS_FS_ZLIB |
| select CRYPTO_LZO if UBIFS_FS_LZO |
| select CRYPTO_DEFLATE if UBIFS_FS_ZLIB |
| depends on MTD_UBI |
| help |
| UBIFS is a file system for flash devices which works on top of UBI. |
| |
| config UBIFS_FS_XATTR |
| bool "Extended attributes support" |
| depends on UBIFS_FS |
| help |
| This option enables support of extended attributes. |
| |
| config UBIFS_FS_ADVANCED_COMPR |
| bool "Advanced compression options" |
| depends on UBIFS_FS |
| help |
| This option allows to explicitly choose which compressions, if any, |
| are enabled in UBIFS. Removing compressors means inability to read |
| existing file systems. |
| |
| If unsure, say 'N'. |
| |
| config UBIFS_FS_LZO |
| bool "LZO compression support" if UBIFS_FS_ADVANCED_COMPR |
| depends on UBIFS_FS |
| default y |
| help |
| LZO compressor is generally faster than zlib but compresses worse. |
| Say 'Y' if unsure. |
| |
| config UBIFS_FS_ZLIB |
| bool "ZLIB compression support" if UBIFS_FS_ADVANCED_COMPR |
| depends on UBIFS_FS |
| default y |
| help |
| Zlib compresses better than LZO but it is slower. Say 'Y' if unsure. |
| |
| # Debugging-related stuff |
| config UBIFS_FS_DEBUG |
| bool "Enable debugging support" |
| depends on UBIFS_FS |
| select DEBUG_FS |
| select KALLSYMS_ALL |
| help |
| This option enables UBIFS debugging support. It makes sure various |
| assertions, self-checks, debugging messages and test modes are compiled |
| in (this all is compiled out otherwise). Assertions are light-weight |
| and this option also enables them. Self-checks, debugging messages and |
| test modes are switched off by default. Thus, it is safe and actually |
| recommended to have debugging support enabled, and it should not slow |
| down UBIFS. You can then further enable / disable individual debugging |
| features using UBIFS module parameters and the corresponding sysfs |
| interfaces. |
| |
| config UBIFS_FS_DEBUG_CHKS |
| bool "Enable extra checks" |
| depends on UBIFS_FS_DEBUG |
| help |
| If extra checks are enabled UBIFS will check the consistency of its |
| internal data structures during operation. However, UBIFS performance |
| is dramatically slower when this option is selected especially if the |
| file system is large. |
