X-Git-Url: http://www.aleph1.co.uk/gitweb/?p=yaffs2.git;a=blobdiff_plain;f=Kconfig;h=635414059997d1efcd89eea9e49cc068bcaf6004;hp=b2b3bc52a754f8560f686a31d42f75b063ebdaa9;hb=73a3c763b22ab4e330dfea929e5df5c7c6c42432;hpb=e721e0888655c325e5d5477ae121ff325f2847c0 diff --git a/Kconfig b/Kconfig index b2b3bc5..6354140 100644 --- a/Kconfig +++ b/Kconfig @@ -5,7 +5,7 @@ config YAFFS_FS tristate "YAFFS2 file system support" default n - depends on MTD + depends on MTD_BLOCK select YAFFS_YAFFS1 select YAFFS_YAFFS2 help @@ -26,7 +26,7 @@ config YAFFS_YAFFS1 default y help Enable YAFFS1 support -- yaffs for 512 byte / page devices - + Not needed for 2K-page devices. If unsure, say Y. @@ -90,39 +90,15 @@ config YAFFS_AUTO_YAFFS2 If unsure, say Y. -config YAFFS_DISABLE_LAZY_LOAD - bool "Disable lazy loading" - depends on YAFFS_YAFFS2 +config YAFFS_DISABLE_TAGS_ECC + bool "Disable YAFFS from doing ECC on tags by default" + depends on YAFFS_FS && YAFFS_YAFFS2 default n help - "Lazy loading" defers loading file details until they are - required. This saves mount time, but makes the first look-up - a bit longer. - - Lazy loading will only happen if enabled by this option being 'n' - and if the appropriate tags are available, else yaffs2 will - automatically fall back to immediate loading and do the right - thing. - - Lazy laoding will be required by checkpointing. - - Setting this to 'y' will disable lazy loading. - - If unsure, say N. - - -config YAFFS_DISABLE_WIDE_TNODES - bool "Turn off wide tnodes" - depends on YAFFS_FS - default n - help - Wide tnodes are only used for NAND arrays >=32MB for 512-byte - page devices and >=128MB for 2k page devices. They use slightly - more RAM but are faster since they eliminate chunk group - searching. - - Setting this to 'y' will force tnode width to 16 bits and save - memory but make large arrays slower. + This defaults Yaffs to using its own ECC calculations on tags instead of + just relying on the MTD. + This behavior can also be overridden with tags_ecc_on and + tags_ecc_off mount options. If unsure, say N. @@ -138,19 +114,48 @@ config YAFFS_ALWAYS_CHECK_CHUNK_ERASED Enabling this forces on the test that chunks are erased in flash before writing to them. This takes more time but is potentially a bit more secure. - + Suggest setting Y during development and ironing out driver - issues etc. Suggest setting to N if you want faster writing. + issues etc. Suggest setting to N if you want faster writing. If unsure, say Y. -config YAFFS_SHORT_NAMES_IN_RAM - bool "Cache short names in RAM" +config YAFFS_EMPTY_LOST_AND_FOUND + bool "Empty lost and found on boot" depends on YAFFS_FS - default y + default n help - If this config is set, then short names are stored with the - yaffs_Object. This costs an extra 16 bytes of RAM per object, - but makes look-ups faster. + If this is enabled then the contents of lost and found is + automatically dumped at mount. - If unsure, say Y. + If unsure, say N. + +config YAFFS_DISABLE_BLOCK_REFRESHING + bool "Disable yaffs2 block refreshing" + depends on YAFFS_FS + default n + help + If this is set, then block refreshing is disabled. + Block refreshing infrequently refreshes the oldest block in + a yaffs2 file system. This mechanism helps to refresh flash to + mitigate against data loss. This is particularly useful for MLC. + + If unsure, say N. + +config YAFFS_DISABLE_BACKGROUND + bool "Disable yaffs2 background processing" + depends on YAFFS_FS + default n + help + If this is set, then background processing is disabled. + Background processing makes many foreground activities faster. + + If unsure, say N. + +config YAFFS_XATTR + bool "Enable yaffs2 xattr support" + depends on YAFFS_FS + default y + help + If this is set then yaffs2 will provide xattr support. + If unsure, say Y.