[J-u-boot.git] / fs / jffs2 / Kconfig

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!
Commit	Line	Data
59e12a4a SG	1	config FS_JFFS2
	2	bool "Enable JFFS2 filesystem support"
	3	help
	4	This provides support for reading images from JFFS2 (Journalling
	5	Flash File System version 2). JFFS2 is a log-structured file system
	6	for use with flash memory devices. It supports raw NAND devices,
	7	hard links and compression.
968c6210 TR	8
	9	config JFFS2_LZO
	10	bool "Enable LZO compression in JFFS2"
	11	depends on FS_JFFS2
	12	help
	13	Enable LZO compression in the JFFS2 filesystem
	14
	15	config JFFS2_NAND
	16	bool "Enable JFFS2 support for NAND flash"
	17	depends on FS_JFFS2
	18	help
	19	Enable support for NAND flash as the backing store for JFFS2.
3b677dcd TR	20
	21	config SYS_JFFS2_SORT_FRAGMENTS
	22	bool "Enable JFFS2 sorting of filesystem fragments (SLOW!)"
	23	depends on FS_JFFS2
	24	help
	25	If you boot from a partition which is mounted writable, and you
	26	update your boot environment by replacing single files on that
	27	partition, you should also define CONFIG_SYS_JFFS2_SORT_FRAGMENTS.
	28	Scanning the JFFS2 filesystem takes much longer with this feature,
	29	though. Sorting is done while inserting into the fragment list,
	30	which is more or less a bubble sort. That algorithm is known to be
	31	O(n^2), thus you should really consider if you can avoid it!