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-rw-r--r--doc/README.JFFS28
1 files changed, 8 insertions, 0 deletions
diff --git a/doc/README.JFFS2 b/doc/README.JFFS2
index 0d39c46..3243895 100644
--- a/doc/README.JFFS2
+++ b/doc/README.JFFS2
@@ -9,6 +9,14 @@ fsload - load binary file from a file system image
fsinfo - print information about file systems
ls - list files in a directory
+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 CFG_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!
+
There is two ways for JFFS2 to find the disk. The default way uses
the flash_info structure to find the start of a JFFS2 disk (called