config YAFFS_FS
tristate "YAFFS2 file system support"
default n
+ depends on MTD
select YAFFS_YAFFS1
select YAFFS_YAFFS2
help
If unsure, say Y.
+config YAFFS_DISABLE_LAZY_LOAD
+ bool "Disable lazy loading"
+ depends on 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_CHECKPOINT_RESERVED_BLOCKS
+ int "Reserved blocks for checkpointing"
+ depends on YAFFS_YAFFS2
+ default 10
+ help
+ Give the number of Blocks to reserve for checkpointing. These Blocks
+ are reserved per partition, so if you have very small partitions the
+ default (10) may be a mess for you.
+ You can set this value to 0, but that does not mean checkpointing is
+ disabled at all. There only won't be any specially reserved blocks for
+ checkpointing, so if there is enough free space on the filesystem,
+ it will be used for checkpointing.
+
+ If unsure, leave at default (10), but don't wonder if there are always
+ 2MB used on your large page device partition (10 x 2k pagesize). When
+ using small partitions or when being very small on space, you probably
+ want to set this to zero.
+
config YAFFS_DISABLE_WIDE_TNODES
bool "Turn off wide tnodes"
depends on YAFFS_FS
If unsure, say N.
-config YAFFS_DISABLE_CHUNK_ERASED_CHECK
- bool "Turn off debug chunk erase check"
+config YAFFS_ALWAYS_CHECK_CHUNK_ERASED
+ bool "Force chunk erase check"
depends on YAFFS_FS
- default y
+ default n
help
- Enabling this turns off the test that chunks are erased in flash
- before writing to them. This is safe, since the write verification
- will fail. Suggest enabling the test (ie. say N)
- during development to help debug things.
+ Normally YAFFS only checks chunks before writing until an erased
+ chunk is found. This helps to detect any partially written chunks
+ that might have happened due to power loss.
+
+ 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.
If unsure, say Y.