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-rw-r--r--fs/jffs2/Kconfig12
1 files changed, 12 insertions, 0 deletions
diff --git a/fs/jffs2/Kconfig b/fs/jffs2/Kconfig
index 0e79c34090..3bf01cd031 100644
--- a/fs/jffs2/Kconfig
+++ b/fs/jffs2/Kconfig
@@ -17,3 +17,15 @@ config JFFS2_NAND
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!