diff options
author | Andrew Victor <andrew@sanpeople.com> | 2005-02-09 10:24:26 +0100 |
---|---|---|
committer | Thomas Gleixner <tglx@mtd.linutronix.de> | 2005-05-23 12:29:43 +0200 |
commit | 2f82ce1eb637c06dfc60f095cd1891ae0ba4894c (patch) | |
tree | 425727d05f70fdd55d5cf715c7acbeca6aeeeb18 /fs | |
parent | [JFFS2] Add support for JFFS2-on-Dataflash devices. (diff) | |
download | linux-2f82ce1eb637c06dfc60f095cd1891ae0ba4894c.tar.xz linux-2f82ce1eb637c06dfc60f095cd1891ae0ba4894c.zip |
[JFFS2] Use a single config option for write buffer support
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>
Diffstat (limited to 'fs')
-rw-r--r-- | fs/Kconfig | 33 | ||||
-rw-r--r-- | fs/jffs2/Makefile | 6 | ||||
-rw-r--r-- | fs/jffs2/fs.c | 6 | ||||
-rw-r--r-- | fs/jffs2/nodelist.h | 4 | ||||
-rw-r--r-- | fs/jffs2/os-linux.h | 28 | ||||
-rw-r--r-- | fs/jffs2/scan.c | 12 | ||||
-rw-r--r-- | fs/jffs2/super.c | 4 | ||||
-rw-r--r-- | fs/jffs2/wbuf.c | 8 |
8 files changed, 33 insertions, 68 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 |