mtd/fs/jffs3 TODO,3.1,3.2
Artem Bityuckiy
dedekind at infradead.org
Thu Dec 16 09:43:38 EST 2004
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Update of /home/cvs/mtd/fs/jffs3
In directory phoenix.infradead.org:/tmp/cvs-serv8948
Modified Files:
TODO
Log Message:
Add Joakim Tjernlund's Ideas.
Index: TODO
===================================================================
RCS file: /home/cvs/mtd/fs/jffs3/TODO,v
retrieving revision 3.1
retrieving revision 3.2
diff -u -r3.1 -r3.2
--- TODO 9 Dec 2004 16:05:03 -0000 3.1
+++ TODO 16 Dec 2004 14:43:35 -0000 3.2
@@ -1,4 +1,3 @@
-JFFS2 Id: TODO,v 1.17 2004/04/14 20:11:38 gleixner Exp
* $Id$
- support asynchronous operation -- add a per-fs 'reserved_space' count,
@@ -34,3 +33,13 @@
- Remove totlen from jffs3_raw_node_ref? Need to have totlen passed into
jffs3_mark_node_obsolete(). Can all callers work it out?
- Remove size from jffs3_raw_node_frag.
+
+ Joakim Tjernlund <joakim.tjernlund at lumentis.se> Thu, 16 Dec 2004 14:20:43:
+ - Consider another checksum algorithm. Crc32 is very expensive
+ and JFFS2 suffered severely in the early days. Now that crc32 is
+ very optimized that problem is less visible, but crc32 is still
+ expensive. Maybe an Adler32 checksum is good enough or a crc16?
+
+ - Don't calculate a Adler32 checksum when comressing with zlib.
+ JFFS2 already has its own checksum.
+
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