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| author | Andrew Victor <andrew@sanpeople.com> | 2005-02-09 09:17:45 +0000 |
|---|---|---|
| committer | Thomas Gleixner <tglx@mtd.linutronix.de> | 2005-05-23 12:28:03 +0200 |
| commit | 8f15fd55f9bf266139b10850947e19c4e3f4e9b7 (patch) | |
| tree | 3df936efbffbbd6c20dd75f51780ac37458285ff /fs/Kconfig | |
| parent | 3be36675d41a30ed3b192f92684f1417aa0f8bfe (diff) | |
| download | lwn-8f15fd55f9bf266139b10850947e19c4e3f4e9b7.tar.gz lwn-8f15fd55f9bf266139b10850947e19c4e3f4e9b7.zip | |
[JFFS2] Add support for JFFS2-on-Dataflash devices.
For Dataflash, can_mark_obsolete = false and the NAND write buffering
code (wbuf.c) is used.
Since the DataFlash chip will automatically erase pages when writing,
the cleanmarkers are not needed - so cleanmarker_oob = false and
cleanmarker_size = 0
DataFlash page-sizes are not a power of two (they're multiples of 528
bytes). The SECTOR_ADDR macro (added in the previous core patch) is
replaced with a (slower) div/mod version if CONFIG_JFFS2_FS_DATAFLASH is
selected.
Signed-off-by: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'fs/Kconfig')
| -rw-r--r-- | fs/Kconfig | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/fs/Kconfig b/fs/Kconfig index 6a4ad4bb7a54..07835d24c785 100644 --- a/fs/Kconfig +++ b/fs/Kconfig @@ -1084,6 +1084,13 @@ config JFFS2_FS_NOR_ECC ECC for JFFS2. This type of flash chip is not common, however it is available from ST Microelectronics. +config JFFS2_FS_DATAFLASH + bool "JFFS2 support for DataFlash (EXPERIMENTAL)" + depends on JFFS2_FS && EXPERIMENTAL + default n + help + This enables the experimental support for JFFS2 on DataFlash devices. + config JFFS2_COMPRESSION_OPTIONS bool "Advanced compression options for JFFS2" depends on JFFS2_FS |