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-rw-r--r--fs/Kconfig33
-rw-r--r--fs/jffs2/Makefile6
-rw-r--r--fs/jffs2/fs.c6
-rw-r--r--fs/jffs2/nodelist.h4
-rw-r--r--fs/jffs2/os-linux.h28
-rw-r--r--fs/jffs2/scan.c12
-rw-r--r--fs/jffs2/super.c4
-rw-r--r--fs/jffs2/wbuf.c8
-rw-r--r--include/linux/jffs2_fs_sb.h4
9 files changed, 35 insertions, 70 deletions
diff --git a/fs/Kconfig b/fs/Kconfig
index 07835d24c785..475769c25d64 100644
--- a/fs/Kconfig
+++ b/fs/Kconfig
@@ -1063,33 +1063,18 @@ config JFFS2_FS_DEBUG
If reporting bugs, please try to have available a full dump of the
messages at debug level 1 while the misbehaviour was occurring.
-config JFFS2_FS_NAND
- bool "JFFS2 support for NAND flash"
+config JFFS2_FS_WRITEBUFFER
+ bool "JFFS2 write-buffering support"
depends on JFFS2_FS
- default n
+ default y
help
- This enables the support for NAND flash in JFFS2. NAND is a newer
- type of flash chip design than the traditional NOR flash, with
- higher density but a handful of characteristics which make it more
- interesting for the file system to use.
+ This enables the write-buffering support in JFFS2.
- Say 'N' unless you have NAND flash.
-
-config JFFS2_FS_NOR_ECC
- bool "JFFS2 support for ECC'd NOR flash (EXPERIMENTAL)"
- depends on JFFS2_FS && EXPERIMENTAL
- default n
- help
- This enables the experimental support for NOR flash with transparent
- ECC for JFFS2. This type of flash chip is not common, however it is
- available from ST Microelectronics.
-
-config JFFS2_FS_DATAFLASH
- bool "JFFS2 support for DataFlash (EXPERIMENTAL)"
- depends on JFFS2_FS && EXPERIMENTAL
- default n
- help
- This enables the experimental support for JFFS2 on DataFlash devices.
+ This functionality is required to support JFFS2 on the following
+ types of flash devices:
+ - NAND flash
+ - NOR flash with transparent ECC
+ - DataFlash
config JFFS2_COMPRESSION_OPTIONS
bool "Advanced compression options for JFFS2"
diff --git a/fs/jffs2/Makefile b/fs/jffs2/Makefile
index 6c2ebe176b40..f1afe681ecd6 100644
--- a/fs/jffs2/Makefile
+++ b/fs/jffs2/Makefile
@@ -1,7 +1,7 @@
#
# Makefile for the Linux Journalling Flash File System v2 (JFFS2)
#
-# $Id: Makefile.common,v 1.8 2005/02/09 09:17:40 pavlov Exp $
+# $Id: Makefile.common,v 1.9 2005/02/09 09:23:53 pavlov Exp $
#
obj-$(CONFIG_JFFS2_FS) += jffs2.o
@@ -11,9 +11,7 @@ jffs2-y += read.o nodemgmt.o readinode.o write.o scan.o gc.o
jffs2-y += symlink.o build.o erase.o background.o fs.o writev.o
jffs2-y += super.o
-jffs2-$(CONFIG_JFFS2_FS_NAND) += wbuf.o
-jffs2-$(CONFIG_JFFS2_FS_NOR_ECC) += wbuf.o
-jffs2-$(CONFIG_JFFS2_FS_DATAFLASH) += wbuf.o
+jffs2-$(CONFIG_JFFS2_FS_WRITEBUFFER) += wbuf.o
jffs2-$(CONFIG_JFFS2_RUBIN) += compr_rubin.o
jffs2-$(CONFIG_JFFS2_RTIME) += compr_rtime.o
jffs2-$(CONFIG_JFFS2_ZLIB) += compr_zlib.o
diff --git a/fs/jffs2/fs.c b/fs/jffs2/fs.c
index 5b7c960a0475..c91c66e5e869 100644
--- a/fs/jffs2/fs.c
+++ b/fs/jffs2/fs.c
@@ -7,7 +7,7 @@
*
* For licensing information, see the file 'LICENCE' in this directory.
*
- * $Id: fs.c,v 1.52 2005/02/09 09:17:40 pavlov Exp $
+ * $Id: fs.c,v 1.53 2005/02/09 09:23:53 pavlov Exp $
*
*/
@@ -450,13 +450,11 @@ int jffs2_do_fill_super(struct super_block *sb, void *data, int silent)
c = JFFS2_SB_INFO(sb);
-#ifndef CONFIG_JFFS2_FS_NAND
+#ifndef CONFIG_JFFS2_FS_WRITEBUFFER
if (c->mtd->type == MTD_NANDFLASH) {
printk(KERN_ERR "jffs2: Cannot operate on NAND flash unless jffs2 NAND support is compiled in.\n");
return -EINVAL;
}
-#endif
-#ifndef CONFIG_JFFS2_FS_DATAFLASH
if (c->mtd->type == MTD_DATAFLASH) {
printk(KERN_ERR "jffs2: Cannot operate on DataFlash unless jffs2 DataFlash support is compiled in.\n");
return -EINVAL;
diff --git a/fs/jffs2/nodelist.h b/fs/jffs2/nodelist.h
index a4864d05ea92..8c122838bf6d 100644
--- a/fs/jffs2/nodelist.h
+++ b/fs/jffs2/nodelist.h
@@ -7,7 +7,7 @@
*
* For licensing information, see the file 'LICENCE' in this directory.
*
- * $Id: nodelist.h,v 1.126 2004/11/19 15:06:29 dedekind Exp $
+ * $Id: nodelist.h,v 1.127 2005/02/09 09:23:53 pavlov Exp $
*
*/
@@ -462,7 +462,7 @@ int jffs2_do_mount_fs(struct jffs2_sb_info *c);
/* erase.c */
void jffs2_erase_pending_blocks(struct jffs2_sb_info *c, int count);
-#ifdef CONFIG_JFFS2_FS_NAND
+#ifdef CONFIG_JFFS2_FS_WRITEBUFFER
/* wbuf.c */
int jffs2_flush_wbuf_gc(struct jffs2_sb_info *c, uint32_t ino);
int jffs2_flush_wbuf_pad(struct jffs2_sb_info *c);
diff --git a/fs/jffs2/os-linux.h b/fs/jffs2/os-linux.h
index af27b84007a1..8989cd685e46 100644
--- a/fs/jffs2/os-linux.h
+++ b/fs/jffs2/os-linux.h
@@ -7,7 +7,7 @@
*
* For licensing information, see the file 'LICENCE' in this directory.
*
- * $Id: os-linux.h,v 1.53 2005/02/09 09:17:41 pavlov Exp $
+ * $Id: os-linux.h,v 1.54 2005/02/09 09:23:53 pavlov Exp $
*
*/
@@ -97,16 +97,12 @@ static inline void jffs2_init_inode_info(struct jffs2_inode_info *f)
#endif
}
-#ifdef CONFIG_JFFS2_FS_DATAFLASH
-#define SECTOR_ADDR(x) ( ((unsigned long)(x) / (unsigned long)(c->sector_size)) * c->sector_size )
-#else
-#define SECTOR_ADDR(x) ( ((unsigned long)(x) & ~(c->sector_size-1)) )
-#endif
#define jffs2_is_readonly(c) (OFNI_BS_2SFFJ(c)->s_flags & MS_RDONLY)
#define jffs2_is_writebuffered(c) (c->wbuf != NULL)
-#if (!defined CONFIG_JFFS2_FS_NAND && !defined CONFIG_JFFS2_FS_NOR_ECC && !defined CONFIG_JFFS2_FS_DATAFLASH)
+#ifndef CONFIG_JFFS2_FS_WRITEBUFFER
+#define SECTOR_ADDR(x) ( ((unsigned long)(x) & ~(c->sector_size-1)) )
#define jffs2_can_mark_obsolete(c) (1)
#define jffs2_cleanmarker_oob(c) (0)
#define jffs2_write_nand_cleanmarker(c,jeb) (-EIO)
@@ -129,6 +125,7 @@ static inline void jffs2_init_inode_info(struct jffs2_inode_info *f)
#else /* NAND and/or ECC'd NOR support present */
+#define SECTOR_ADDR(x) ( ((unsigned long)(x) / (unsigned long)(c->sector_size)) * c->sector_size )
#define jffs2_can_mark_obsolete(c) ((c->mtd->type == MTD_NORFLASH && !(c->mtd->flags & MTD_ECC)) || c->mtd->type == MTD_RAM)
#define jffs2_cleanmarker_oob(c) (c->mtd->type == MTD_NANDFLASH)
@@ -150,25 +147,16 @@ int jffs2_flush_wbuf_gc(struct jffs2_sb_info *c, uint32_t ino);
int jffs2_flush_wbuf_pad(struct jffs2_sb_info *c);
int jffs2_nand_flash_setup(struct jffs2_sb_info *c);
void jffs2_nand_flash_cleanup(struct jffs2_sb_info *c);
-#ifdef CONFIG_JFFS2_FS_NOR_ECC
+
#define jffs2_nor_ecc(c) (c->mtd->type == MTD_NORFLASH && (c->mtd->flags & MTD_ECC))
int jffs2_nor_ecc_flash_setup(struct jffs2_sb_info *c);
void jffs2_nor_ecc_flash_cleanup(struct jffs2_sb_info *c);
-#else
-#define jffs2_nor_ecc(c) (0)
-#define jffs2_nor_ecc_flash_setup(c) (0)
-#define jffs2_nor_ecc_flash_cleanup(c) do {} while (0)
-#endif /* NOR ECC */
-#ifdef CONFIG_JFFS2_FS_DATAFLASH
+
#define jffs2_dataflash(c) (c->mtd->type == MTD_DATAFLASH)
int jffs2_dataflash_setup(struct jffs2_sb_info *c);
void jffs2_dataflash_cleanup(struct jffs2_sb_info *c);
-#else
-#define jffs2_dataflash(c) (0)
-#define jffs2_dataflash_setup(c) (0)
-#define jffs2_dataflash_cleanup(c) do {} while (0)
-#endif /* DATAFLASH */
-#endif /* NAND */
+
+#endif /* WRITEBUFFER */
/* erase.c */
static inline void jffs2_erase_pending_trigger(struct jffs2_sb_info *c)
diff --git a/fs/jffs2/scan.c b/fs/jffs2/scan.c
index e8c43746c82e..bc6c99980026 100644
--- a/fs/jffs2/scan.c
+++ b/fs/jffs2/scan.c
@@ -7,7 +7,7 @@
*
* For licensing information, see the file 'LICENCE' in this directory.
*
- * $Id: scan.c,v 1.117 2005/02/09 09:17:41 pavlov Exp $
+ * $Id: scan.c,v 1.118 2005/02/09 09:23:53 pavlov Exp $
*
*/
#include <linux/kernel.h>
@@ -68,7 +68,7 @@ static int jffs2_scan_dirent_node(struct jffs2_sb_info *c, struct jffs2_eraseblo
static inline int min_free(struct jffs2_sb_info *c)
{
uint32_t min = 2 * sizeof(struct jffs2_raw_inode);
-#if defined CONFIG_JFFS2_FS_NAND || defined CONFIG_JFFS2_FS_NOR_ECC || defined CONFIG_JFFS2_FS_DATAFLASH
+#ifdef CONFIG_JFFS2_FS_WRITEBUFFER
if (!jffs2_can_mark_obsolete(c) && min < c->wbuf_pagesize)
return c->wbuf_pagesize;
#endif
@@ -228,7 +228,7 @@ int jffs2_scan_medium(struct jffs2_sb_info *c)
c->dirty_size -= c->nextblock->dirty_size;
c->nextblock->dirty_size = 0;
}
-#if defined CONFIG_JFFS2_FS_NAND || defined CONFIG_JFFS2_FS_NOR_ECC || defined CONFIG_JFFS2_FS_DATAFLASH
+#ifdef CONFIG_JFFS2_FS_WRITEBUFFER
if (!jffs2_can_mark_obsolete(c) && c->nextblock && (c->nextblock->free_size & (c->wbuf_pagesize-1))) {
/* If we're going to start writing into a block which already
contains data, and the end of the data isn't page-aligned,
@@ -294,7 +294,7 @@ static int jffs2_scan_eraseblock (struct jffs2_sb_info *c, struct jffs2_eraseblo
uint32_t hdr_crc, buf_ofs, buf_len;
int err;
int noise = 0;
-#ifdef CONFIG_JFFS2_FS_NAND
+#ifdef CONFIG_JFFS2_FS_WRITEBUFFER
int cleanmarkerfound = 0;
#endif
@@ -303,7 +303,7 @@ static int jffs2_scan_eraseblock (struct jffs2_sb_info *c, struct jffs2_eraseblo
D1(printk(KERN_DEBUG "jffs2_scan_eraseblock(): Scanning block at 0x%x\n", ofs));
-#ifdef CONFIG_JFFS2_FS_NAND
+#ifdef CONFIG_JFFS2_FS_WRITEBUFFER
if (jffs2_cleanmarker_oob(c)) {
int ret = jffs2_check_nand_cleanmarker(c, jeb);
D2(printk(KERN_NOTICE "jffs_check_nand_cleanmarker returned %d\n",ret));
@@ -338,7 +338,7 @@ static int jffs2_scan_eraseblock (struct jffs2_sb_info *c, struct jffs2_eraseblo
ofs += 4;
if (ofs == EMPTY_SCAN_SIZE(c->sector_size)) {
-#ifdef CONFIG_JFFS2_FS_NAND
+#ifdef CONFIG_JFFS2_FS_WRITEBUFFER
if (jffs2_cleanmarker_oob(c)) {
/* scan oob, take care of cleanmarker */
int ret = jffs2_check_oob_empty(c, jeb, cleanmarkerfound);
diff --git a/fs/jffs2/super.c b/fs/jffs2/super.c
index 6b2a441d2766..3bfc121a4674 100644
--- a/fs/jffs2/super.c
+++ b/fs/jffs2/super.c
@@ -7,7 +7,7 @@
*
* For licensing information, see the file 'LICENCE' in this directory.
*
- * $Id: super.c,v 1.104 2004/11/23 15:37:31 gleixner Exp $
+ * $Id: super.c,v 1.105 2005/02/09 09:23:54 pavlov Exp $
*
*/
@@ -309,7 +309,7 @@ static int __init init_jffs2_fs(void)
int ret;
printk(KERN_INFO "JFFS2 version 2.2."
-#ifdef CONFIG_JFFS2_FS_NAND
+#ifdef CONFIG_JFFS2_FS_WRITEBUFFER
" (NAND)"
#endif
" (C) 2001-2003 Red Hat, Inc.\n");
diff --git a/fs/jffs2/wbuf.c b/fs/jffs2/wbuf.c
index a35e007e5bf8..890258505a7f 100644
--- a/fs/jffs2/wbuf.c
+++ b/fs/jffs2/wbuf.c
@@ -9,7 +9,7 @@
*
* For licensing information, see the file 'LICENCE' in this directory.
*
- * $Id: wbuf.c,v 1.88 2005/02/09 09:17:41 pavlov Exp $
+ * $Id: wbuf.c,v 1.89 2005/02/09 09:23:54 pavlov Exp $
*
*/
@@ -604,7 +604,7 @@ int jffs2_flush_wbuf_pad(struct jffs2_sb_info *c)
return ret;
}
-#ifdef CONFIG_JFFS2_FS_DATAFLASH
+#ifdef CONFIG_JFFS2_FS_WRITEBUFFER
#define PAGE_DIV(x) ( ((unsigned long)(x) / (unsigned long)(c->wbuf_pagesize)) * (unsigned long)(c->wbuf_pagesize) )
#define PAGE_MOD(x) ( (unsigned long)(x) % (unsigned long)(c->wbuf_pagesize) )
#else
@@ -1198,7 +1198,6 @@ void jffs2_nand_flash_cleanup(struct jffs2_sb_info *c)
kfree(c->wbuf);
}
-#ifdef CONFIG_JFFS2_FS_DATAFLASH
int jffs2_dataflash_setup(struct jffs2_sb_info *c) {
c->cleanmarker_size = 0; /* No cleanmarkers needed */
@@ -1219,9 +1218,7 @@ int jffs2_dataflash_setup(struct jffs2_sb_info *c) {
void jffs2_dataflash_cleanup(struct jffs2_sb_info *c) {
kfree(c->wbuf);
}
-#endif
-#ifdef CONFIG_JFFS2_FS_NOR_ECC
int jffs2_nor_ecc_flash_setup(struct jffs2_sb_info *c) {
/* Cleanmarker is actually larger on the flashes */
c->cleanmarker_size = 16;
@@ -1241,4 +1238,3 @@ int jffs2_nor_ecc_flash_setup(struct jffs2_sb_info *c) {
void jffs2_nor_ecc_flash_cleanup(struct jffs2_sb_info *c) {
kfree(c->wbuf);
}
-#endif
diff --git a/include/linux/jffs2_fs_sb.h b/include/linux/jffs2_fs_sb.h
index faec29559fed..1bd6cdfb7d78 100644
--- a/include/linux/jffs2_fs_sb.h
+++ b/include/linux/jffs2_fs_sb.h
@@ -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;
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