jffs2: drop unused model argument

The jffs2 compression framework provides a "model" argument when
compressing and decompressing, but the caller always passes in NULL
and the callees never use it.  So punt this useless overhead.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
diff --git a/fs/jffs2/compr.h b/fs/jffs2/compr.h
index e471a91..13bb759 100644
--- a/fs/jffs2/compr.h
+++ b/fs/jffs2/compr.h
@@ -49,9 +49,9 @@
 	char *name;
 	char compr;			/* JFFS2_COMPR_XXX */
 	int (*compress)(unsigned char *data_in, unsigned char *cpage_out,
-			uint32_t *srclen, uint32_t *destlen, void *model);
+			uint32_t *srclen, uint32_t *destlen);
 	int (*decompress)(unsigned char *cdata_in, unsigned char *data_out,
-			  uint32_t cdatalen, uint32_t datalen, void *model);
+			  uint32_t cdatalen, uint32_t datalen);
 	int usecount;
 	int disabled;		/* if set the compressor won't compress */
 	unsigned char *compr_buf;	/* used by size compr. mode */