From 3b677dcd9d6b1fcaa9affd2289744756bcda1165 Mon Sep 17 00:00:00 2001 From: Tom Rini Date: Fri, 28 Oct 2022 20:26:59 -0400 Subject: fs: jffs2: Move SYS_JFFS2_SORT_FRAGMENTS to Kconfig 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 Reviewed-by: Simon Glass --- fs/jffs2/Kconfig | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'fs') 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! -- cgit v1.2.3