mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-01 08:59:33 +00:00
3b677dcd9d
Move the symbol SYS_JFFS2_SORT_FRAGMENTS to Kconfig and use the only remaining part of doc/README.JFFS2 that is still relevant and useful to the help for this option. Signed-off-by: Tom Rini <trini@konsulko.com> Reviewed-by: Simon Glass <sjg@chromium.org>
31 lines
1.2 KiB
Text
31 lines
1.2 KiB
Text
config FS_JFFS2
|
|
bool "Enable JFFS2 filesystem support"
|
|
help
|
|
This provides support for reading images from JFFS2 (Journalling
|
|
Flash File System version 2). JFFS2 is a log-structured file system
|
|
for use with flash memory devices. It supports raw NAND devices,
|
|
hard links and compression.
|
|
|
|
config JFFS2_LZO
|
|
bool "Enable LZO compression in JFFS2"
|
|
depends on FS_JFFS2
|
|
help
|
|
Enable LZO compression in the JFFS2 filesystem
|
|
|
|
config JFFS2_NAND
|
|
bool "Enable JFFS2 support for NAND flash"
|
|
depends on FS_JFFS2
|
|
help
|
|
Enable support for NAND flash as the backing store for JFFS2.
|
|
|
|
config SYS_JFFS2_SORT_FRAGMENTS
|
|
bool "Enable JFFS2 sorting of filesystem fragments (SLOW!)"
|
|
depends on FS_JFFS2
|
|
help
|
|
If you boot from a partition which is mounted writable, and you
|
|
update your boot environment by replacing single files on that
|
|
partition, you should also define CONFIG_SYS_JFFS2_SORT_FRAGMENTS.
|
|
Scanning the JFFS2 filesystem takes *much* longer with this feature,
|
|
though. Sorting is done while inserting into the fragment list,
|
|
which is more or less a bubble sort. That algorithm is known to be
|
|
O(n^2), thus you should really consider if you can avoid it!
|