mtd/include/linux jffs2_fs_sb.h,1.48,1.49

[Andrew Victor]

Update of /home/cvs/mtd/include/linux
In directory phoenix.infradead.org:/tmp/cvs-serv26392/include/linux

Modified Files:
	jffs2_fs_sb.h 
Log Message:
Adds support for JFFS2-on-Dataflash devices.

For Dataflash, can_mark_obsolete = false and the NAND write buffering
code (wbuf.c) is used.

Since the DataFlash chip will automatically erase pages when writing,
the cleanmarkers are not needed - so cleanmarker_oob = false and
cleanmarker_size = 0

DataFlash page-sizes are not a power of two (they're multiples of 528
bytes).  The SECTOR_ADDR macro (added in the previous core patch) is
replaced with a (slower) div/mod version if CONFIG_JFFS2_FS_DATAFLASH is
selected.


Signed-off-by: Andrew Victor <andrew at sanpeople.com>



Index: jffs2_fs_sb.h
===================================================================
RCS file: /home/cvs/mtd/include/linux/jffs2_fs_sb.h,v
retrieving revision 1.48
retrieving revision 1.49
diff -u -r1.48 -r1.49
--- jffs2_fs_sb.h	20 Nov 2004 10:41:12 -0000	1.48
+++ jffs2_fs_sb.h	9 Feb 2005 09:17:41 -0000	1.49
@@ -94,7 +94,7 @@
 	   to an obsoleted node. I don't like this. Alternatives welcomed. */
 	struct semaphore erase_free_sem;
 
-#if defined CONFIG_JFFS2_FS_NAND || defined CONFIG_JFFS2_FS_NOR_ECC
+#if defined CONFIG_JFFS2_FS_NAND || defined CONFIG_JFFS2_FS_NOR_ECC || defined CONFIG_JFFS2_FS_DATAFLASH
 	/* Write-behind buffer for NAND flash */
 	unsigned char *wbuf;
 	uint32_t wbuf_ofs;