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Date: Wed, 10 Aug 2005 10:26:28 +0200
From: Bernhard Priewasser <bernhard@prie.de>
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Subject: Compiling JFFS3
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Hello,

when trying to compile JFFS3 kernel module out-of-the-box, I get 
(pathnames stripped):

 > ~/mtd/fs/jffs3> make
 > make -C /lib/modules/2.6.11.4-21.7-default/build SUBDIRS=`pwd` 
mtd=`pwd` modules
 > make[1]: Entering directory `/usr/src/linux-2.6.11.4-21.7'
 >   CC [M]  /mtd/fs/jffs3/compr.o
 > In file included from /mtd/fs/jffs3/nodelist.h:205,
 >                  from /mtd/fs/jffs3/compr.h:27,
 >                  from /mtd/fs/jffs3/compr.c:17:
 > /mtd/fs/jffs3/debug.h: In function `jffs3_dbg_wbuf_acct_sanity_check':
 > /mtd/fs/jffs3/debug.h:366: error: structure has no member named 
`wbuf_pagesize'
 > /mtd/fs/jffs3/debug.h:366: error: structure has no member named 
`wbuf_len'
 > /mtd/fs/jffs3/debug.h:367: error: structure has no member named 
`wbuf_ofs'
 > /mtd/fs/jffs3/debug.h:367: error: structure has no member named 
`wbuf_len'
 > /mtd/fs/jffs3/debug.h:367: error: structure has no member named 
`wbuf_pagesize'
 > /mtd/fs/jffs3/debug.h:367: error: structure has no member named 
`wbuf_len'
 > make[2]: *** [/mtd/fs/jffs3/compr.o] Error 1
 > make[1]: *** [_module_/mtd/fs/jffs3] Error 2
 > make[1]: Leaving directory `/usr/src/linux-2.6.11.4-21.7'
 > make: *** [modules] Error 2

In jffs3.h, line 296ff, the write-behind and oob stuff (wbuf_* ...) is 
not added because CONFIG_JFFS3_FS_WRITEBUFFER is not defined.

Have a look at mtd/include/linux/config.h, line 38. Shouldn't
 > #define CONFIG_JFFS3_FS_WRITEBUFFER 1
be added there to consider JFFS_3_ too, not only JFFS_2_?

Regards,
Bernhard