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authorAndrew Victor <andrew@sanpeople.com>2005-02-09 04:17:45 -0500
committerThomas Gleixner <tglx@mtd.linutronix.de>2005-05-23 06:28:03 -0400
commit8f15fd55f9bf266139b10850947e19c4e3f4e9b7 (patch)
tree3df936efbffbbd6c20dd75f51780ac37458285ff /include/linux
parent3be36675d41a30ed3b192f92684f1417aa0f8bfe (diff)
[JFFS2] Add 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@sanpeople.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'include/linux')
-rw-r--r--include/linux/jffs2_fs_sb.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/include/linux/jffs2_fs_sb.h b/include/linux/jffs2_fs_sb.h
index 4afc8d8c2e9e..faec29559fed 100644
--- a/include/linux/jffs2_fs_sb.h
+++ b/include/linux/jffs2_fs_sb.h
@@ -1,4 +1,4 @@
1/* $Id: jffs2_fs_sb.h,v 1.48 2004/11/20 10:41:12 dwmw2 Exp $ */ 1/* $Id: jffs2_fs_sb.h,v 1.49 2005/02/09 09:17:41 pavlov Exp $ */
2 2
3#ifndef _JFFS2_FS_SB 3#ifndef _JFFS2_FS_SB
4#define _JFFS2_FS_SB 4#define _JFFS2_FS_SB
@@ -94,7 +94,7 @@ struct jffs2_sb_info {
94 to an obsoleted node. I don't like this. Alternatives welcomed. */ 94 to an obsoleted node. I don't like this. Alternatives welcomed. */
95 struct semaphore erase_free_sem; 95 struct semaphore erase_free_sem;
96 96
97#if defined CONFIG_JFFS2_FS_NAND || defined CONFIG_JFFS2_FS_NOR_ECC 97#if defined CONFIG_JFFS2_FS_NAND || defined CONFIG_JFFS2_FS_NOR_ECC || defined CONFIG_JFFS2_FS_DATAFLASH
98 /* Write-behind buffer for NAND flash */ 98 /* Write-behind buffer for NAND flash */
99 unsigned char *wbuf; 99 unsigned char *wbuf;
100 uint32_t wbuf_ofs; 100 uint32_t wbuf_ofs;