projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 0d7eff87 AB |
1 | config UBIFS_FS |
| 2 | tristate "UBIFS file system support" | |
| 3 | select CRC16 | |
| 4 | select CRC32 | |
| 5 | select CRYPTO if UBIFS_FS_ADVANCED_COMPR | |
| 6 | select CRYPTO if UBIFS_FS_LZO | |
| 7 | select CRYPTO if UBIFS_FS_ZLIB | |
| 8 | select CRYPTO_LZO if UBIFS_FS_LZO | |
| 9 | select CRYPTO_DEFLATE if UBIFS_FS_ZLIB | |
| 10 | depends on MTD_UBI | |
| 11 | help | |
| 12 | UBIFS is a file system for flash devices which works on top of UBI. | |
| 13 | ||
| 14 | config UBIFS_FS_XATTR | |
| 15 | bool "Extended attributes support" | |
| 16 | depends on UBIFS_FS | |
| 17 | help | |
| 18 | This option enables support of extended attributes. | |
| 19 | ||
| 20 | config UBIFS_FS_ADVANCED_COMPR | |
| 21 | bool "Advanced compression options" | |
| 22 | depends on UBIFS_FS | |
| 23 | help | |
| 24 | This option allows to explicitly choose which compressions, if any, | |
| 692105b8 | 25 | are enabled in UBIFS. Removing compressors means inability to read |
| 0d7eff87 AB |
26 | existing file systems. |
| 27 | ||
| 28 | If unsure, say 'N'. | |
| 29 | ||
| 30 | config UBIFS_FS_LZO | |
| 31 | bool "LZO compression support" if UBIFS_FS_ADVANCED_COMPR | |
| 32 | depends on UBIFS_FS | |
| 33 | default y | |
| 34 | help | |
| 692105b8 | 35 | LZO compressor is generally faster than zlib but compresses worse. |
| 0d7eff87 AB |
36 | Say 'Y' if unsure. |
| 37 | ||
| 38 | config UBIFS_FS_ZLIB | |
| 39 | bool "ZLIB compression support" if UBIFS_FS_ADVANCED_COMPR | |
| 40 | depends on UBIFS_FS | |
| 41 | default y | |
| 42 | help | |
| 025dfdaf | 43 | Zlib compresses better than LZO but it is slower. Say 'Y' if unsure. |
| 0d7eff87 AB |
44 | |
| 45 | # Debugging-related stuff | |
| 46 | config UBIFS_FS_DEBUG | |
| cce3f612 | 47 | bool "Enable debugging support" |
| 0d7eff87 AB |
48 | depends on UBIFS_FS |
| 49 | select DEBUG_FS | |
| 81354de3 | 50 | select KALLSYMS |
| 0d7eff87 | 51 | help |
| cce3f612 AB |
52 | This option enables UBIFS debugging support. It makes sure various |
| 53 | assertions, self-checks, debugging messages and test modes are compiled | |
| 54 | in (this all is compiled out otherwise). Assertions are light-weight | |
| 55 | and this option also enables them. Self-checks, debugging messages and | |
| 56 | test modes are switched off by default. Thus, it is safe and actually | |
| 57 | recommended to have debugging support enabled, and it should not slow | |
| 58 | down UBIFS. You can then further enable / disable individual debugging | |
| 59 | features using UBIFS module parameters and the corresponding sysfs | |
| 60 | interfaces. |