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[JFFS2] Use a single config option for write buffer support

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This patch replaces the current CONFIG_JFFS2_FS_NAND, CONFIG_JFFS2_FS_NOR_ECC
and CONFIG_JFFS2_FS_DATAFLASH with a single configuration option -
CONFIG_JFFS2_FS_WRITEBUFFER.

The only functional change of this patch is that the slower div/mod
calculations for SECTOR_ADDR(), PAGE_DIV() and PAGE_MOD() are now always
used when CONFIG_JFFS2_FS_WRITEBUFFER is enabled.

Signed-off-by: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Andrew Victor
2005-02-09 09:24:26 +00:00
committed by Thomas Gleixner
parent 8f15fd55f9
commit 2f82ce1eb6
9 changed files with 35 additions and 70 deletions
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4
include/linux/jffs2_fs_sb.h
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@ -1,4 +1,4 @@
/* $Id: jffs2_fs_sb.h,v 1.49 2005/02/09 09:17:41 pavlov Exp $ */
/* $Id: jffs2_fs_sb.h,v 1.50 2005/02/09 09:23:55 pavlov Exp $ */
#ifndef _JFFS2_FS_SB
#define _JFFS2_FS_SB
@ -94,7 +94,7 @@ struct jffs2_sb_info {
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 || defined CONFIG_JFFS2_FS_DATAFLASH
#ifdef CONFIG_JFFS2_FS_WRITEBUFFER
/* Write-behind buffer for NAND flash */
unsigned char *wbuf;
uint32_t wbuf_ofs;