1config 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 14config UBIFS_FS_ADVANCED_COMPR 15 bool "Advanced compression options" 16 depends on UBIFS_FS 17 help 18 This option allows to explicitly choose which compressions, if any, 19 are enabled in UBIFS. Removing compressors means inability to read 20 existing file systems. 21 22 If unsure, say 'N'. 23 24config UBIFS_FS_LZO 25 bool "LZO compression support" if UBIFS_FS_ADVANCED_COMPR 26 depends on UBIFS_FS 27 default y 28 help 29 LZO compressor is generally faster than zlib but compresses worse. 30 Say 'Y' if unsure. 31 32config UBIFS_FS_ZLIB 33 bool "ZLIB compression support" if UBIFS_FS_ADVANCED_COMPR 34 depends on UBIFS_FS 35 default y 36 help 37 Zlib compresses better than LZO but it is slower. Say 'Y' if unsure. 38