From 0d420f9d6111b3a2fb7d5dd0180456eed469055d Mon Sep 17 00:00:00 2001 From: Savin Zlobec Date: Wed, 21 Jun 2006 11:51:20 +0200 Subject: [PATCH 01/17] [MTD] NAND: Missing fixups The oob fixups broke a return value and missed one patch from the Mailing List. Signed-off-by: Savin Zlobec Signed-off-by: Thomas Gleixner --- drivers/mtd/nand/nand_base.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index 27083ed0a017..8df184f6d8d1 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -1176,7 +1176,7 @@ static int nand_write_oob_std(struct mtd_info *mtd, struct nand_chip *chip, status = chip->waitfunc(mtd, chip); - return status; + return status & NAND_STATUS_FAIL ? -EIO : 0; } /** @@ -1271,10 +1271,6 @@ static int nand_do_read_oob(struct mtd_info *mtd, loff_t from, sndcmd = chip->ecc.read_oob(mtd, chip, page, sndcmd); buf = nand_transfer_oob(chip, buf, ops); - readlen -= ops->ooblen; - if (!readlen) - break; - if (!(chip->options & NAND_NO_READRDY)) { /* * Apply delay or wait for ready/busy pin. Do this @@ -1288,6 +1284,10 @@ static int nand_do_read_oob(struct mtd_info *mtd, loff_t from, nand_wait_ready(mtd); } + readlen -= ops->ooblen; + if (!readlen) + break; + /* Increment page address */ realpage++; From 99974c62b6acd4093b6f485132067089c39f967c Mon Sep 17 00:00:00 2001 From: Ben Dooks Date: Wed, 21 Jun 2006 15:43:05 +0100 Subject: [PATCH 02/17] [MTD] NAND: S3C2410 convert prinks to dev_*()s Convert the use of printk() to the correct dev_info/dev_err functions Signed-off-by: Ben Dooks Signed-off-by: Thomas Gleixner --- drivers/mtd/nand/s3c2410.c | 10 ++++------ 1 file changed, 4 insertions(+), 6 deletions(-) diff --git a/drivers/mtd/nand/s3c2410.c b/drivers/mtd/nand/s3c2410.c index 2c262fe03d8a..5219bd212cf6 100644 --- a/drivers/mtd/nand/s3c2410.c +++ b/drivers/mtd/nand/s3c2410.c @@ -63,8 +63,6 @@ #include #include -#define PFX "s3c2410-nand: " - #ifdef CONFIG_MTD_NAND_S3C2410_HWECC static int hardware_ecc = 1; #else @@ -195,11 +193,11 @@ static int s3c2410_nand_inithw(struct s3c2410_nand_info *info, struct platform_d } if (tacls < 0 || twrph0 < 0 || twrph1 < 0) { - printk(KERN_ERR PFX "cannot get timings suitable for board\n"); + dev_err(info->device, "cannot get suitable timings\n"); return -EINVAL; } - printk(KERN_INFO PFX "Tacls=%d, %dns Twrph0=%d %dns, Twrph1=%d %dns\n", + dev_info(info->device, "Tacls=%d, %dns Twrph0=%d %dns, Twrph1=%d %dns\n", tacls, to_ns(tacls, clkrate), twrph0, to_ns(twrph0, clkrate), twrph1, to_ns(twrph1, clkrate)); if (!info->is_s3c2440) { @@ -218,7 +216,7 @@ static int s3c2410_nand_inithw(struct s3c2410_nand_info *info, struct platform_d info->regs + S3C2440_NFCONT); } - pr_debug(PFX "NF_CONF is 0x%lx\n", cfg); + dev_dbg(info->device, "NF_CONF is 0x%lx\n", cfg); writel(cfg, info->regs + S3C2410_NFCONF); return 0; @@ -250,7 +248,7 @@ static void s3c2410_nand_select_chip(struct mtd_info *mtd, int chip) cur |= bit; } else { if (nmtd->set != NULL && chip > nmtd->set->nr_chips) { - printk(KERN_ERR PFX "chip %d out of range\n", chip); + dev_err(info->device, "invalid chip %d\n", chip); return; } From 1794c13002918c2216e2e11913eb299d071a5731 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Thu, 22 Jun 2006 13:06:43 +0200 Subject: [PATCH 03/17] [MTD] NAND: ndfc fix address offset thinko The rework of the command handling in the nand driver led to wrong address setting in the command control function. Use the correct address again. Signed-off-by: Thomas Gleixner --- drivers/mtd/nand/ndfc.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/mtd/nand/ndfc.c b/drivers/mtd/nand/ndfc.c index fe8d38514ba6..e5bd88f2d560 100644 --- a/drivers/mtd/nand/ndfc.c +++ b/drivers/mtd/nand/ndfc.c @@ -61,15 +61,15 @@ static void ndfc_select_chip(struct mtd_info *mtd, int chip) static void ndfc_hwcontrol(struct mtd_info *mtd, int cmd, unsigned int ctrl) { - struct nand_chip *chip = mtd->priv; + struct ndfc_controller *ndfc = &ndfc_ctrl; if (cmd == NAND_CMD_NONE) return; if (ctrl & NAND_CLE) - writel(cmd & 0xFF, chip->IO_ADDR_W + NDFC_CMD); + writel(cmd & 0xFF, ndfc->ndfcbase + NDFC_CMD); else - writel(cmd & 0xFF, chip->IO_ADDR_W + NDFC_ALE); + writel(cmd & 0xFF, ndfc->ndfcbase + NDFC_ALE); } static int ndfc_ready(struct mtd_info *mtd) From 17ffc7ba6d7ea68b8d5f55a5ca1b87163e69720d Mon Sep 17 00:00:00 2001 From: "Artem B. Bityutskiy" Date: Thu, 22 Jun 2006 18:15:48 +0400 Subject: [PATCH 04/17] [MTD] Initialize 'writesize' Signed-off-by: Artem B. Bityutskiy --- drivers/mtd/chips/cfi_cmdset_0001.c | 1 + drivers/mtd/chips/jedec.c | 1 + drivers/mtd/chips/map_absent.c | 3 ++- drivers/mtd/chips/map_ram.c | 1 + drivers/mtd/chips/map_rom.c | 1 + drivers/mtd/devices/block2mtd.c | 1 + drivers/mtd/devices/ms02-nv.c | 1 + drivers/mtd/devices/mtd_dataflash.c | 1 + drivers/mtd/devices/phram.c | 1 + drivers/mtd/devices/pmc551.c | 3 ++- drivers/mtd/devices/slram.c | 1 + 11 files changed, 13 insertions(+), 2 deletions(-) diff --git a/drivers/mtd/chips/cfi_cmdset_0001.c b/drivers/mtd/chips/cfi_cmdset_0001.c index 0d435814aaa1..39edb8250fbc 100644 --- a/drivers/mtd/chips/cfi_cmdset_0001.c +++ b/drivers/mtd/chips/cfi_cmdset_0001.c @@ -357,6 +357,7 @@ struct mtd_info *cfi_cmdset_0001(struct map_info *map, int primary) mtd->resume = cfi_intelext_resume; mtd->flags = MTD_CAP_NORFLASH; mtd->name = map->name; + mtd->writesize = 1; mtd->reboot_notifier.notifier_call = cfi_intelext_reboot; diff --git a/drivers/mtd/chips/jedec.c b/drivers/mtd/chips/jedec.c index c40b48dabed3..2c3f019197c1 100644 --- a/drivers/mtd/chips/jedec.c +++ b/drivers/mtd/chips/jedec.c @@ -256,6 +256,7 @@ static struct mtd_info *jedec_probe(struct map_info *map) MTD->name = map->name; MTD->type = MTD_NORFLASH; MTD->flags = MTD_CAP_NORFLASH; + MTD->writesize = 1; MTD->erasesize = SectorSize*(map->buswidth); // printk("MTD->erasesize is %x\n",(unsigned int)MTD->erasesize); MTD->size = priv->size; diff --git a/drivers/mtd/chips/map_absent.c b/drivers/mtd/chips/map_absent.c index a611de9b1515..ac01a949b687 100644 --- a/drivers/mtd/chips/map_absent.c +++ b/drivers/mtd/chips/map_absent.c @@ -64,7 +64,8 @@ static struct mtd_info *map_absent_probe(struct map_info *map) mtd->write = map_absent_write; mtd->sync = map_absent_sync; mtd->flags = 0; - mtd->erasesize = PAGE_SIZE; + mtd->erasesize = PAGE_SIZE; + mtd->writesize = 1; __module_get(THIS_MODULE); return mtd; diff --git a/drivers/mtd/chips/map_ram.c b/drivers/mtd/chips/map_ram.c index 763925747db6..3a66680abfd0 100644 --- a/drivers/mtd/chips/map_ram.c +++ b/drivers/mtd/chips/map_ram.c @@ -71,6 +71,7 @@ static struct mtd_info *map_ram_probe(struct map_info *map) mtd->write = mapram_write; mtd->sync = mapram_nop; mtd->flags = MTD_CAP_RAM; + mtd->writesize = 1; mtd->erasesize = PAGE_SIZE; while(mtd->size & (mtd->erasesize - 1)) diff --git a/drivers/mtd/chips/map_rom.c b/drivers/mtd/chips/map_rom.c index bc6ee9ef8a31..1b328b1378fd 100644 --- a/drivers/mtd/chips/map_rom.c +++ b/drivers/mtd/chips/map_rom.c @@ -47,6 +47,7 @@ static struct mtd_info *map_rom_probe(struct map_info *map) mtd->sync = maprom_nop; mtd->flags = MTD_CAP_ROM; mtd->erasesize = map->size; + mtd->writesize = 1; __module_get(THIS_MODULE); return mtd; diff --git a/drivers/mtd/devices/block2mtd.c b/drivers/mtd/devices/block2mtd.c index 0d98c223c5fc..be3f1c136d02 100644 --- a/drivers/mtd/devices/block2mtd.c +++ b/drivers/mtd/devices/block2mtd.c @@ -324,6 +324,7 @@ static struct block2mtd_dev *add_device(char *devname, int erase_size) dev->mtd.size = dev->blkdev->bd_inode->i_size & PAGE_MASK; dev->mtd.erasesize = erase_size; + dev->mtd.writesize = 1; dev->mtd.type = MTD_RAM; dev->mtd.flags = MTD_CAP_RAM; dev->mtd.erase = block2mtd_erase; diff --git a/drivers/mtd/devices/ms02-nv.c b/drivers/mtd/devices/ms02-nv.c index 4ab7670770e4..08dfb899b272 100644 --- a/drivers/mtd/devices/ms02-nv.c +++ b/drivers/mtd/devices/ms02-nv.c @@ -225,6 +225,7 @@ static int __init ms02nv_init_one(ulong addr) mtd->owner = THIS_MODULE; mtd->read = ms02nv_read; mtd->write = ms02nv_write; + mtd->writesize = 1; ret = -EIO; if (add_mtd_device(mtd)) { diff --git a/drivers/mtd/devices/mtd_dataflash.c b/drivers/mtd/devices/mtd_dataflash.c index a19480d07888..04271d02b6b6 100644 --- a/drivers/mtd/devices/mtd_dataflash.c +++ b/drivers/mtd/devices/mtd_dataflash.c @@ -478,6 +478,7 @@ add_dataflash(struct spi_device *spi, char *name, device->name = (pdata && pdata->name) ? pdata->name : priv->name; device->size = nr_pages * pagesize; device->erasesize = pagesize; + device->writesize = pagesize; device->owner = THIS_MODULE; device->type = MTD_DATAFLASH; device->flags = MTD_CAP_NORFLASH; diff --git a/drivers/mtd/devices/phram.c b/drivers/mtd/devices/phram.c index e09e416667d3..6c7337f9ebbb 100644 --- a/drivers/mtd/devices/phram.c +++ b/drivers/mtd/devices/phram.c @@ -151,6 +151,7 @@ static int register_device(char *name, unsigned long start, unsigned long len) new->mtd.owner = THIS_MODULE; new->mtd.type = MTD_RAM; new->mtd.erasesize = PAGE_SIZE; + new->mtd.writesize = 1; ret = -EAGAIN; if (add_mtd_device(&new->mtd)) { diff --git a/drivers/mtd/devices/pmc551.c b/drivers/mtd/devices/pmc551.c index 666cce1bf60c..f620d74f1004 100644 --- a/drivers/mtd/devices/pmc551.c +++ b/drivers/mtd/devices/pmc551.c @@ -778,7 +778,8 @@ static int __init init_pmc551(void) mtd->type = MTD_RAM; mtd->name = "PMC551 RAM board"; mtd->erasesize = 0x10000; - mtd->owner = THIS_MODULE; + mtd->writesize = 1; + mtd->owner = THIS_MODULE; if (add_mtd_device(mtd)) { printk(KERN_NOTICE "pmc551: Failed to register new device\n"); diff --git a/drivers/mtd/devices/slram.c b/drivers/mtd/devices/slram.c index b3f665e3c38b..542a0c009006 100644 --- a/drivers/mtd/devices/slram.c +++ b/drivers/mtd/devices/slram.c @@ -209,6 +209,7 @@ static int register_device(char *name, unsigned long start, unsigned long length (*curmtd)->mtdinfo->owner = THIS_MODULE; (*curmtd)->mtdinfo->type = MTD_RAM; (*curmtd)->mtdinfo->erasesize = SLRAM_BLK_SZ; + (*curmtd)->mtdinfo->writesize = 1; if (add_mtd_device((*curmtd)->mtdinfo)) { E("slram: Failed to register new device\n"); From 2c06a0821711a53d51a3d0492a9be0671b7152e5 Mon Sep 17 00:00:00 2001 From: Ben Dooks Date: Tue, 27 Jun 2006 14:35:46 +0100 Subject: [PATCH 05/17] [MTD NAND] s3c2412 support in s3c2410.c Add support for both the S3C2412 and S3C2412 Samsung SoCs to the increasingly mis-named s3c2410.c driver. This currently only supports SLC ECCs, and a chip on nFCE0. Signed-off-by: Ben Dooks Signed-off-by: David Woodhouse --- drivers/mtd/nand/s3c2410.c | 154 ++++++++++++++++------- include/asm-arm/arch-s3c2410/regs-nand.h | 48 ++++++- 2 files changed, 158 insertions(+), 44 deletions(-) diff --git a/drivers/mtd/nand/s3c2410.c b/drivers/mtd/nand/s3c2410.c index 5219bd212cf6..ff5cef24d5bb 100644 --- a/drivers/mtd/nand/s3c2410.c +++ b/drivers/mtd/nand/s3c2410.c @@ -97,6 +97,12 @@ struct s3c2410_nand_mtd { int scan_res; }; +enum s3c_cpu_type { + TYPE_S3C2410, + TYPE_S3C2412, + TYPE_S3C2440, +}; + /* overview of the s3c2410 nand state */ struct s3c2410_nand_info { @@ -110,9 +116,11 @@ struct s3c2410_nand_info { struct resource *area; struct clk *clk; void __iomem *regs; + void __iomem *sel_reg; + int sel_bit; int mtd_count; - unsigned char is_s3c2440; + enum s3c_cpu_type cpu_type; }; /* conversion functions */ @@ -146,7 +154,7 @@ static inline int allow_clk_stop(struct s3c2410_nand_info *info) #define NS_IN_KHZ 1000000 -static int s3c2410_nand_calc_rate(int wanted, unsigned long clk, int max) +static int s3c_nand_calc_rate(int wanted, unsigned long clk, int max) { int result; @@ -170,24 +178,26 @@ static int s3c2410_nand_calc_rate(int wanted, unsigned long clk, int max) /* controller setup */ -static int s3c2410_nand_inithw(struct s3c2410_nand_info *info, struct platform_device *pdev) +static int s3c2410_nand_inithw(struct s3c2410_nand_info *info, + struct platform_device *pdev) { struct s3c2410_platform_nand *plat = to_nand_plat(pdev); unsigned long clkrate = clk_get_rate(info->clk); + int tacls_max = (info->cpu_type == TYPE_S3C2412) ? 8 : 4; int tacls, twrph0, twrph1; - unsigned long cfg; + unsigned long cfg = 0; /* calculate the timing information for the controller */ clkrate /= 1000; /* turn clock into kHz for ease of use */ if (plat != NULL) { - tacls = s3c2410_nand_calc_rate(plat->tacls, clkrate, 4); - twrph0 = s3c2410_nand_calc_rate(plat->twrph0, clkrate, 8); - twrph1 = s3c2410_nand_calc_rate(plat->twrph1, clkrate, 8); + tacls = s3c_nand_calc_rate(plat->tacls, clkrate, tacls_max); + twrph0 = s3c_nand_calc_rate(plat->twrph0, clkrate, 8); + twrph1 = s3c_nand_calc_rate(plat->twrph1, clkrate, 8); } else { /* default timings */ - tacls = 4; + tacls = tacls_max; twrph0 = 8; twrph1 = 8; } @@ -200,20 +210,23 @@ static int s3c2410_nand_inithw(struct s3c2410_nand_info *info, struct platform_d dev_info(info->device, "Tacls=%d, %dns Twrph0=%d %dns, Twrph1=%d %dns\n", tacls, to_ns(tacls, clkrate), twrph0, to_ns(twrph0, clkrate), twrph1, to_ns(twrph1, clkrate)); - if (!info->is_s3c2440) { + switch (info->cpu_type) { + case TYPE_S3C2410: cfg = S3C2410_NFCONF_EN; cfg |= S3C2410_NFCONF_TACLS(tacls - 1); cfg |= S3C2410_NFCONF_TWRPH0(twrph0 - 1); cfg |= S3C2410_NFCONF_TWRPH1(twrph1 - 1); - } else { + break; + + case TYPE_S3C2440: + case TYPE_S3C2412: cfg = S3C2440_NFCONF_TACLS(tacls - 1); cfg |= S3C2440_NFCONF_TWRPH0(twrph0 - 1); cfg |= S3C2440_NFCONF_TWRPH1(twrph1 - 1); /* enable the controller and de-assert nFCE */ - writel(S3C2440_NFCONT_ENABLE | S3C2440_NFCONT_ENABLE, - info->regs + S3C2440_NFCONT); + writel(S3C2440_NFCONT_ENABLE, info->regs + S3C2440_NFCONT); } dev_dbg(info->device, "NF_CONF is 0x%lx\n", cfg); @@ -229,23 +242,18 @@ static void s3c2410_nand_select_chip(struct mtd_info *mtd, int chip) struct s3c2410_nand_info *info; struct s3c2410_nand_mtd *nmtd; struct nand_chip *this = mtd->priv; - void __iomem *reg; unsigned long cur; - unsigned long bit; nmtd = this->priv; info = nmtd->info; - bit = (info->is_s3c2440) ? S3C2440_NFCONT_nFCE : S3C2410_NFCONF_nFCE; - reg = info->regs + ((info->is_s3c2440) ? S3C2440_NFCONT : S3C2410_NFCONF); - if (chip != -1 && allow_clk_stop(info)) clk_enable(info->clk); - cur = readl(reg); + cur = readl(info->sel_reg); if (chip == -1) { - cur |= bit; + cur |= info->sel_bit; } else { if (nmtd->set != NULL && chip > nmtd->set->nr_chips) { dev_err(info->device, "invalid chip %d\n", chip); @@ -257,10 +265,10 @@ static void s3c2410_nand_select_chip(struct mtd_info *mtd, int chip) (info->platform->select_chip) (nmtd->set, chip); } - cur &= ~bit; + cur &= ~info->sel_bit; } - writel(cur, reg); + writel(cur, info->sel_reg); if (chip == -1 && allow_clk_stop(info)) clk_disable(info->clk); @@ -309,15 +317,25 @@ static void s3c2440_nand_hwcontrol(struct mtd_info *mtd, int cmd, static int s3c2410_nand_devready(struct mtd_info *mtd) { struct s3c2410_nand_info *info = s3c2410_nand_mtd_toinfo(mtd); - - if (info->is_s3c2440) - return readb(info->regs + S3C2440_NFSTAT) & S3C2440_NFSTAT_READY; return readb(info->regs + S3C2410_NFSTAT) & S3C2410_NFSTAT_BUSY; } +static int s3c2440_nand_devready(struct mtd_info *mtd) +{ + struct s3c2410_nand_info *info = s3c2410_nand_mtd_toinfo(mtd); + return readb(info->regs + S3C2440_NFSTAT) & S3C2440_NFSTAT_READY; +} + +static int s3c2412_nand_devready(struct mtd_info *mtd) +{ + struct s3c2410_nand_info *info = s3c2410_nand_mtd_toinfo(mtd); + return readb(info->regs + S3C2412_NFSTAT) & S3C2412_NFSTAT_READY; +} + /* ECC handling functions */ -static int s3c2410_nand_correct_data(struct mtd_info *mtd, u_char *dat, u_char *read_ecc, u_char *calc_ecc) +static int s3c2410_nand_correct_data(struct mtd_info *mtd, u_char *dat, + u_char *read_ecc, u_char *calc_ecc) { pr_debug("s3c2410_nand_correct_data(%p,%p,%p,%p)\n", mtd, dat, read_ecc, calc_ecc); @@ -485,11 +503,8 @@ static void s3c2410_nand_init_chip(struct s3c2410_nand_info *info, struct s3c2410_nand_set *set) { struct nand_chip *chip = &nmtd->chip; + void __iomem *regs = info->regs; - chip->IO_ADDR_R = info->regs + S3C2410_NFDATA; - chip->IO_ADDR_W = info->regs + S3C2410_NFDATA; - chip->cmd_ctrl = s3c2410_nand_hwcontrol; - chip->dev_ready = s3c2410_nand_devready; chip->write_buf = s3c2410_nand_write_buf; chip->read_buf = s3c2410_nand_read_buf; chip->select_chip = s3c2410_nand_select_chip; @@ -498,11 +513,37 @@ static void s3c2410_nand_init_chip(struct s3c2410_nand_info *info, chip->options = 0; chip->controller = &info->controller; - if (info->is_s3c2440) { - chip->IO_ADDR_R = info->regs + S3C2440_NFDATA; - chip->IO_ADDR_W = info->regs + S3C2440_NFDATA; - chip->cmd_ctrl = s3c2440_nand_hwcontrol; - } + switch (info->cpu_type) { + case TYPE_S3C2410: + chip->IO_ADDR_W = regs + S3C2410_NFDATA; + info->sel_reg = regs + S3C2410_NFCONF; + info->sel_bit = S3C2410_NFCONF_nFCE; + chip->cmd_ctrl = s3c2410_nand_hwcontrol; + chip->dev_ready = s3c2410_nand_devready; + break; + + case TYPE_S3C2440: + chip->IO_ADDR_W = regs + S3C2440_NFDATA; + info->sel_reg = regs + S3C2440_NFCONT; + info->sel_bit = S3C2440_NFCONT_nFCE; + chip->cmd_ctrl = s3c2440_nand_hwcontrol; + chip->dev_ready = s3c2440_nand_devready; + break; + + case TYPE_S3C2412: + chip->IO_ADDR_W = regs + S3C2440_NFDATA; + info->sel_reg = regs + S3C2440_NFCONT; + info->sel_bit = S3C2412_NFCONT_nFCE0; + chip->cmd_ctrl = s3c2440_nand_hwcontrol; + chip->dev_ready = s3c2412_nand_devready; + + if (readl(regs + S3C2410_NFCONF) & S3C2412_NFCONF_NANDBOOT) + dev_info(info->device, "System booted from NAND\n"); + + break; + } + + chip->IO_ADDR_R = chip->IO_ADDR_W; nmtd->info = info; nmtd->mtd.priv = chip; @@ -510,17 +551,25 @@ static void s3c2410_nand_init_chip(struct s3c2410_nand_info *info, nmtd->set = set; if (hardware_ecc) { - chip->ecc.correct = s3c2410_nand_correct_data; - chip->ecc.hwctl = s3c2410_nand_enable_hwecc; chip->ecc.calculate = s3c2410_nand_calculate_ecc; + chip->ecc.correct = s3c2410_nand_correct_data; chip->ecc.mode = NAND_ECC_HW; chip->ecc.size = 512; chip->ecc.bytes = 3; chip->ecc.layout = &nand_hw_eccoob; - if (info->is_s3c2440) { - chip->ecc.hwctl = s3c2440_nand_enable_hwecc; - chip->ecc.calculate = s3c2440_nand_calculate_ecc; + switch (info->cpu_type) { + case TYPE_S3C2410: + chip->ecc.hwctl = s3c2410_nand_enable_hwecc; + chip->ecc.calculate = s3c2410_nand_calculate_ecc; + break; + + case TYPE_S3C2412: + case TYPE_S3C2440: + chip->ecc.hwctl = s3c2440_nand_enable_hwecc; + chip->ecc.calculate = s3c2440_nand_calculate_ecc; + break; + } } else { chip->ecc.mode = NAND_ECC_SOFT; @@ -535,7 +584,8 @@ static void s3c2410_nand_init_chip(struct s3c2410_nand_info *info, * nand layer to look for devices */ -static int s3c24xx_nand_probe(struct platform_device *pdev, int is_s3c2440) +static int s3c24xx_nand_probe(struct platform_device *pdev, + enum s3c_cpu_type cpu_type) { struct s3c2410_platform_nand *plat = to_nand_plat(pdev); struct s3c2410_nand_info *info; @@ -590,7 +640,7 @@ static int s3c24xx_nand_probe(struct platform_device *pdev, int is_s3c2440) info->device = &pdev->dev; info->platform = plat; info->regs = ioremap(res->start, size); - info->is_s3c2440 = is_s3c2440; + info->cpu_type = cpu_type; if (info->regs == NULL) { dev_err(&pdev->dev, "cannot reserve register region\n"); @@ -697,12 +747,17 @@ static int s3c24xx_nand_resume(struct platform_device *dev) static int s3c2410_nand_probe(struct platform_device *dev) { - return s3c24xx_nand_probe(dev, 0); + return s3c24xx_nand_probe(dev, TYPE_S3C2410); } static int s3c2440_nand_probe(struct platform_device *dev) { - return s3c24xx_nand_probe(dev, 1); + return s3c24xx_nand_probe(dev, TYPE_S3C2440); +} + +static int s3c2412_nand_probe(struct platform_device *dev) +{ + return s3c24xx_nand_probe(dev, TYPE_S3C2412); } static struct platform_driver s3c2410_nand_driver = { @@ -727,16 +782,29 @@ static struct platform_driver s3c2440_nand_driver = { }, }; +static struct platform_driver s3c2412_nand_driver = { + .probe = s3c2412_nand_probe, + .remove = s3c2410_nand_remove, + .suspend = s3c24xx_nand_suspend, + .resume = s3c24xx_nand_resume, + .driver = { + .name = "s3c2412-nand", + .owner = THIS_MODULE, + }, +}; + static int __init s3c2410_nand_init(void) { printk("S3C24XX NAND Driver, (c) 2004 Simtec Electronics\n"); + platform_driver_register(&s3c2412_nand_driver); platform_driver_register(&s3c2440_nand_driver); return platform_driver_register(&s3c2410_nand_driver); } static void __exit s3c2410_nand_exit(void) { + platform_driver_unregister(&s3c2412_nand_driver); platform_driver_unregister(&s3c2440_nand_driver); platform_driver_unregister(&s3c2410_nand_driver); } diff --git a/include/asm-arm/arch-s3c2410/regs-nand.h b/include/asm-arm/arch-s3c2410/regs-nand.h index 7cff235e667a..c1470c695c33 100644 --- a/include/asm-arm/arch-s3c2410/regs-nand.h +++ b/include/asm-arm/arch-s3c2410/regs-nand.h @@ -39,10 +39,19 @@ #define S3C2440_NFESTAT1 S3C2410_NFREG(0x28) #define S3C2440_NFMECC0 S3C2410_NFREG(0x2C) #define S3C2440_NFMECC1 S3C2410_NFREG(0x30) -#define S3C2440_NFSECC S3C2410_NFREG(0x34) +#define S3C2440_NFSECC S3C24E10_NFREG(0x34) #define S3C2440_NFSBLK S3C2410_NFREG(0x38) #define S3C2440_NFEBLK S3C2410_NFREG(0x3C) +#define S3C2412_NFSBLK S3C2410_NFREG(0x20) +#define S3C2412_NFEBLK S3C2410_NFREG(0x24) +#define S3C2412_NFSTAT S3C2410_NFREG(0x28) +#define S3C2412_NFMECC_ERR0 S3C2410_NFREG(0x2C) +#define S3C2412_NFMECC_ERR1 S3C2410_NFREG(0x30) +#define S3C2412_NFMECC0 S3C2410_NFREG(0x34) +#define S3C2412_NFMECC1 S3C2410_NFREG(0x38) +#define S3C2412_NFSECC S3C2410_NFREG(0x3C) + #define S3C2410_NFCONF_EN (1<<15) #define S3C2410_NFCONF_512BYTE (1<<14) #define S3C2410_NFCONF_4STEP (1<<13) @@ -77,5 +86,42 @@ #define S3C2440_NFSTAT_RnB_CHANGE (1<<2) #define S3C2440_NFSTAT_ILLEGAL_ACCESS (1<<3) +#define S3C2412_NFCONF_NANDBOOT (1<<31) +#define S3C2412_NFCONF_ECCCLKCON (1<<30) +#define S3C2412_NFCONF_ECC_MLC (1<<24) +#define S3C2412_NFCONF_TACLS_MASK (7<<12) /* 1 extra bit of Tacls */ + +#define S3C2412_NFCONT_ECC4_DIRWR (1<<18) +#define S3C2412_NFCONT_LOCKTIGHT (1<<17) +#define S3C2412_NFCONT_SOFTLOCK (1<<16) +#define S3C2412_NFCONT_ECC4_ENCINT (1<<13) +#define S3C2412_NFCONT_ECC4_DECINT (1<<12) +#define S3C2412_NFCONT_MAIN_ECC_LOCK (1<<7) +#define S3C2412_NFCONT_INIT_MAIN_ECC (1<<5) +#define S3C2412_NFCONT_nFCE1 (1<<2) +#define S3C2412_NFCONT_nFCE0 (1<<1) + +#define S3C2412_NFSTAT_ECC_ENCDONE (1<<7) +#define S3C2412_NFSTAT_ECC_DECDONE (1<<6) +#define S3C2412_NFSTAT_ILLEGAL_ACCESS (1<<5) +#define S3C2412_NFSTAT_RnB_CHANGE (1<<4) +#define S3C2412_NFSTAT_nFCE1 (1<<3) +#define S3C2412_NFSTAT_nFCE0 (1<<2) +#define S3C2412_NFSTAT_Res1 (1<<1) +#define S3C2412_NFSTAT_READY (1<<0) + +#define S3C2412_NFECCERR_SERRDATA(x) (((x) >> 21) & 0xf) +#define S3C2412_NFECCERR_SERRBIT(x) (((x) >> 18) & 0x7) +#define S3C2412_NFECCERR_MERRDATA(x) (((x) >> 7) & 0x3ff) +#define S3C2412_NFECCERR_MERRBIT(x) (((x) >> 4) & 0x7) +#define S3C2412_NFECCERR_SPARE_ERR(x) (((x) >> 2) & 0x3) +#define S3C2412_NFECCERR_MAIN_ERR(x) (((x) >> 2) & 0x3) +#define S3C2412_NFECCERR_NONE (0) +#define S3C2412_NFECCERR_1BIT (1) +#define S3C2412_NFECCERR_MULTIBIT (2) +#define S3C2412_NFECCERR_ECCAREA (3) + + + #endif /* __ASM_ARM_REGS_NAND */ From ce5b0968b1caa6b93e366e88a3c5fa2fd59029ce Mon Sep 17 00:00:00 2001 From: Lennert Buytenhek Date: Tue, 27 Jun 2006 14:36:20 +0100 Subject: [PATCH 06/17] [MTD] Remove unused 'nr_banks' variable from ixp2000 map driver Signed-off-by: Lennert Buytenhek Signed-off-by: David Woodhouse --- drivers/mtd/maps/ixp2000.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/drivers/mtd/maps/ixp2000.c b/drivers/mtd/maps/ixp2000.c index 2c9cc7f37e92..c26488a1793a 100644 --- a/drivers/mtd/maps/ixp2000.c +++ b/drivers/mtd/maps/ixp2000.c @@ -42,7 +42,6 @@ struct ixp2000_flash_info { struct map_info map; struct mtd_partition *partitions; struct resource *res; - int nr_banks; }; static inline unsigned long flash_bank_setup(struct map_info *map, unsigned long ofs) @@ -183,7 +182,6 @@ static int ixp2000_flash_probe(struct platform_device *dev) */ info->map.phys = NO_XIP; - info->nr_banks = ixp_data->nr_banks; info->map.size = ixp_data->nr_banks * window_size; info->map.bankwidth = 1; From 6d4f8224d4ee065e0e3186cc554468d735e6015d Mon Sep 17 00:00:00 2001 From: Sascha Hauer Date: Tue, 27 Jun 2006 14:38:15 +0100 Subject: [PATCH 07/17] [MTD] Fix off-by-one error in physmap.c This patch fixes a simple off-by-one error in the mtd physmap driver. Signed-off-by: Sascha Hauer Signed-off-by: Lennert Buytenhek Signed-off-by: David Woodhouse --- drivers/mtd/maps/physmap.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/mtd/maps/physmap.c b/drivers/mtd/maps/physmap.c index 433c3cac3ca9..d6301f08906d 100644 --- a/drivers/mtd/maps/physmap.c +++ b/drivers/mtd/maps/physmap.c @@ -182,7 +182,7 @@ static struct physmap_flash_data physmap_flash_data = { static struct resource physmap_flash_resource = { .start = CONFIG_MTD_PHYSMAP_START, - .end = CONFIG_MTD_PHYSMAP_START + CONFIG_MTD_PHYSMAP_LEN, + .end = CONFIG_MTD_PHYSMAP_START + CONFIG_MTD_PHYSMAP_LEN - 1, .flags = IORESOURCE_MEM, }; From c9f700f840bd481b3e01fcad1ba8da01794a6726 Mon Sep 17 00:00:00 2001 From: KaiGai Kohei Date: Sun, 11 Jun 2006 10:35:15 +0900 Subject: [PATCH 08/17] [JFFS2][XATTR] using 'delete marker' for xdatum/xref deletion - When xdatum is removed, a new xdatum with 'delete marker' is written. (version==0xffffffff means 'delete marker') - When xref is removed, a new xref with 'delete marker' is written. (odd-numbered xseqno means 'delete marker') - delete_xattr_(datum/xref)_delay() are new deletion functions are added. We can only use them if we can detect the target obsolete xdatum/xref as a orphan or errir one. (e.g when inode deletion, or detecting crc error) [1/3] jffs2-xattr-v6-01-delete_marker.patch Signed-off-by: KaiGai Kohei Signed-off-by: David Woodhouse --- fs/jffs2/erase.c | 19 +- fs/jffs2/gc.c | 5 +- fs/jffs2/jffs2_fs_sb.h | 3 + fs/jffs2/malloc.c | 2 + fs/jffs2/nodemgmt.c | 21 +- fs/jffs2/scan.c | 57 ++-- fs/jffs2/summary.c | 39 +-- fs/jffs2/xattr.c | 740 ++++++++++++++++++++++++++--------------- fs/jffs2/xattr.h | 40 ++- include/linux/jffs2.h | 1 + 10 files changed, 586 insertions(+), 341 deletions(-) diff --git a/fs/jffs2/erase.c b/fs/jffs2/erase.c index 1862e8bc101d..1644e3408852 100644 --- a/fs/jffs2/erase.c +++ b/fs/jffs2/erase.c @@ -230,7 +230,6 @@ static inline void jffs2_remove_node_refs_from_ino_list(struct jffs2_sb_info *c, at the end of the linked list. Stash it and continue from the beginning of the list */ ic = (struct jffs2_inode_cache *)(*prev); - BUG_ON(ic->class != RAWNODE_CLASS_INODE_CACHE); prev = &ic->nodes; continue; } @@ -254,7 +253,8 @@ static inline void jffs2_remove_node_refs_from_ino_list(struct jffs2_sb_info *c, /* PARANOIA */ if (!ic) { - printk(KERN_WARNING "inode_cache not found in remove_node_refs()!!\n"); + JFFS2_WARNING("inode_cache/xattr_datum/xattr_ref" + " not found in remove_node_refs()!!\n"); return; } @@ -279,8 +279,19 @@ static inline void jffs2_remove_node_refs_from_ino_list(struct jffs2_sb_info *c, printk("\n"); }); - if (ic->nodes == (void *)ic && ic->nlink == 0) - jffs2_del_ino_cache(c, ic); + switch (ic->class) { +#ifdef CONFIG_JFFS2_FS_XATTR + case RAWNODE_CLASS_XATTR_DATUM: + jffs2_release_xattr_datum(c, (struct jffs2_xattr_datum *)ic); + break; + case RAWNODE_CLASS_XATTR_REF: + jffs2_release_xattr_ref(c, (struct jffs2_xattr_ref *)ic); + break; +#endif + default: + if (ic->nodes == (void *)ic && ic->nlink == 0) + jffs2_del_ino_cache(c, ic); + } } void jffs2_free_jeb_node_refs(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb) diff --git a/fs/jffs2/gc.c b/fs/jffs2/gc.c index 477c526d638b..f59b147661c9 100644 --- a/fs/jffs2/gc.c +++ b/fs/jffs2/gc.c @@ -275,13 +275,12 @@ int jffs2_garbage_collect_pass(struct jffs2_sb_info *c) * We can decide whether this node is inode or xattr by ic->class. */ if (ic->class == RAWNODE_CLASS_XATTR_DATUM || ic->class == RAWNODE_CLASS_XATTR_REF) { - BUG_ON(raw->next_in_ino != (void *)ic); spin_unlock(&c->erase_completion_lock); if (ic->class == RAWNODE_CLASS_XATTR_DATUM) { - ret = jffs2_garbage_collect_xattr_datum(c, (struct jffs2_xattr_datum *)ic); + ret = jffs2_garbage_collect_xattr_datum(c, (struct jffs2_xattr_datum *)ic, raw); } else { - ret = jffs2_garbage_collect_xattr_ref(c, (struct jffs2_xattr_ref *)ic); + ret = jffs2_garbage_collect_xattr_ref(c, (struct jffs2_xattr_ref *)ic, raw); } goto release_sem; } diff --git a/fs/jffs2/jffs2_fs_sb.h b/fs/jffs2/jffs2_fs_sb.h index 935fec1b1201..b98594992eed 100644 --- a/fs/jffs2/jffs2_fs_sb.h +++ b/fs/jffs2/jffs2_fs_sb.h @@ -119,8 +119,11 @@ struct jffs2_sb_info { #ifdef CONFIG_JFFS2_FS_XATTR #define XATTRINDEX_HASHSIZE (57) uint32_t highest_xid; + uint32_t highest_xseqno; struct list_head xattrindex[XATTRINDEX_HASHSIZE]; struct list_head xattr_unchecked; + struct list_head xattr_dead_list; + struct jffs2_xattr_ref *xref_dead_list; struct jffs2_xattr_ref *xref_temp; struct rw_semaphore xattr_sem; uint32_t xdatum_mem_usage; diff --git a/fs/jffs2/malloc.c b/fs/jffs2/malloc.c index 4889d0700c0e..8310c95478e9 100644 --- a/fs/jffs2/malloc.c +++ b/fs/jffs2/malloc.c @@ -291,6 +291,7 @@ struct jffs2_xattr_datum *jffs2_alloc_xattr_datum(void) memset(xd, 0, sizeof(struct jffs2_xattr_datum)); xd->class = RAWNODE_CLASS_XATTR_DATUM; + xd->node = (void *)xd; INIT_LIST_HEAD(&xd->xindex); return xd; } @@ -309,6 +310,7 @@ struct jffs2_xattr_ref *jffs2_alloc_xattr_ref(void) memset(ref, 0, sizeof(struct jffs2_xattr_ref)); ref->class = RAWNODE_CLASS_XATTR_REF; + ref->node = (void *)ref; return ref; } diff --git a/fs/jffs2/nodemgmt.c b/fs/jffs2/nodemgmt.c index 8bedfd2ff689..01594a2256eb 100644 --- a/fs/jffs2/nodemgmt.c +++ b/fs/jffs2/nodemgmt.c @@ -684,19 +684,26 @@ void jffs2_mark_node_obsolete(struct jffs2_sb_info *c, struct jffs2_raw_node_ref spin_lock(&c->erase_completion_lock); ic = jffs2_raw_ref_to_ic(ref); - /* It seems we should never call jffs2_mark_node_obsolete() for - XATTR nodes.... yet. Make sure we notice if/when we change - that :) */ - BUG_ON(ic->class != RAWNODE_CLASS_INODE_CACHE); for (p = &ic->nodes; (*p) != ref; p = &((*p)->next_in_ino)) ; *p = ref->next_in_ino; ref->next_in_ino = NULL; - if (ic->nodes == (void *)ic && ic->nlink == 0) - jffs2_del_ino_cache(c, ic); - + switch (ic->class) { +#ifdef CONFIG_JFFS2_FS_XATTR + case RAWNODE_CLASS_XATTR_DATUM: + jffs2_release_xattr_datum(c, (struct jffs2_xattr_datum *)ic); + break; + case RAWNODE_CLASS_XATTR_REF: + jffs2_release_xattr_ref(c, (struct jffs2_xattr_ref *)ic); + break; +#endif + default: + if (ic->nodes == (void *)ic && ic->nlink == 0) + jffs2_del_ino_cache(c, ic); + break; + } spin_unlock(&c->erase_completion_lock); } diff --git a/fs/jffs2/scan.c b/fs/jffs2/scan.c index 61618080b86f..79638f56c5ea 100644 --- a/fs/jffs2/scan.c +++ b/fs/jffs2/scan.c @@ -317,20 +317,25 @@ static int jffs2_scan_xattr_node(struct jffs2_sb_info *c, struct jffs2_erasebloc struct jffs2_summary *s) { struct jffs2_xattr_datum *xd; - uint32_t totlen, crc; + uint32_t xid, version, totlen, crc; int err; crc = crc32(0, rx, sizeof(struct jffs2_raw_xattr) - 4); if (crc != je32_to_cpu(rx->node_crc)) { - if (je32_to_cpu(rx->node_crc) != 0xffffffff) - JFFS2_WARNING("node CRC failed at %#08x, read=%#08x, calc=%#08x\n", - ofs, je32_to_cpu(rx->node_crc), crc); + JFFS2_WARNING("node CRC failed at %#08x, read=%#08x, calc=%#08x\n", + ofs, je32_to_cpu(rx->node_crc), crc); if ((err = jffs2_scan_dirty_space(c, jeb, je32_to_cpu(rx->totlen)))) return err; return 0; } - totlen = PAD(sizeof(*rx) + rx->name_len + 1 + je16_to_cpu(rx->value_len)); + xid = je32_to_cpu(rx->xid); + version = je32_to_cpu(rx->version); + + totlen = sizeof(struct jffs2_raw_xattr); + if (version != XDATUM_DELETE_MARKER) + totlen += rx->name_len + 1 + je16_to_cpu(rx->value_len); + totlen = PAD(totlen); if (totlen != je32_to_cpu(rx->totlen)) { JFFS2_WARNING("node length mismatch at %#08x, read=%u, calc=%u\n", ofs, je32_to_cpu(rx->totlen), totlen); @@ -339,22 +344,24 @@ static int jffs2_scan_xattr_node(struct jffs2_sb_info *c, struct jffs2_erasebloc return 0; } - xd = jffs2_setup_xattr_datum(c, je32_to_cpu(rx->xid), je32_to_cpu(rx->version)); - if (IS_ERR(xd)) { - if (PTR_ERR(xd) == -EEXIST) { - if ((err = jffs2_scan_dirty_space(c, jeb, PAD(je32_to_cpu(rx->totlen))))) - return err; - return 0; - } + xd = jffs2_setup_xattr_datum(c, xid, version); + if (IS_ERR(xd)) return PTR_ERR(xd); - } - xd->xprefix = rx->xprefix; - xd->name_len = rx->name_len; - xd->value_len = je16_to_cpu(rx->value_len); - xd->data_crc = je32_to_cpu(rx->data_crc); - xd->node = jffs2_link_node_ref(c, jeb, ofs | REF_PRISTINE, totlen, NULL); - /* FIXME */ xd->node->next_in_ino = (void *)xd; + if (xd->version > version) { + struct jffs2_raw_node_ref *raw + = jffs2_link_node_ref(c, jeb, ofs | REF_PRISTINE, totlen, NULL); + raw->next_in_ino = xd->node->next_in_ino; + xd->node->next_in_ino = raw; + } else { + xd->version = version; + xd->xprefix = rx->xprefix; + xd->name_len = rx->name_len; + xd->value_len = je16_to_cpu(rx->value_len); + xd->data_crc = je32_to_cpu(rx->data_crc); + + jffs2_link_node_ref(c, jeb, ofs | REF_PRISTINE, totlen, (void *)xd); + } if (jffs2_sum_active()) jffs2_sum_add_xattr_mem(s, rx, ofs - jeb->offset); @@ -373,9 +380,8 @@ static int jffs2_scan_xref_node(struct jffs2_sb_info *c, struct jffs2_eraseblock crc = crc32(0, rr, sizeof(*rr) - 4); if (crc != je32_to_cpu(rr->node_crc)) { - if (je32_to_cpu(rr->node_crc) != 0xffffffff) - JFFS2_WARNING("node CRC failed at %#08x, read=%#08x, calc=%#08x\n", - ofs, je32_to_cpu(rr->node_crc), crc); + JFFS2_WARNING("node CRC failed at %#08x, read=%#08x, calc=%#08x\n", + ofs, je32_to_cpu(rr->node_crc), crc); if ((err = jffs2_scan_dirty_space(c, jeb, PAD(je32_to_cpu(rr->totlen))))) return err; return 0; @@ -395,6 +401,7 @@ static int jffs2_scan_xref_node(struct jffs2_sb_info *c, struct jffs2_eraseblock return -ENOMEM; /* BEFORE jffs2_build_xattr_subsystem() called, + * and AFTER xattr_ref is marked as a dead xref, * ref->xid is used to store 32bit xid, xd is not used * ref->ino is used to store 32bit inode-number, ic is not used * Thoes variables are declared as union, thus using those @@ -404,11 +411,13 @@ static int jffs2_scan_xref_node(struct jffs2_sb_info *c, struct jffs2_eraseblock */ ref->ino = je32_to_cpu(rr->ino); ref->xid = je32_to_cpu(rr->xid); + ref->xseqno = je32_to_cpu(rr->xseqno); + if (ref->xseqno > c->highest_xseqno) + c->highest_xseqno = (ref->xseqno & ~XREF_DELETE_MARKER); ref->next = c->xref_temp; c->xref_temp = ref; - ref->node = jffs2_link_node_ref(c, jeb, ofs | REF_PRISTINE, PAD(je32_to_cpu(rr->totlen)), NULL); - /* FIXME */ ref->node->next_in_ino = (void *)ref; + jffs2_link_node_ref(c, jeb, ofs | REF_PRISTINE, PAD(je32_to_cpu(rr->totlen)), (void *)ref); if (jffs2_sum_active()) jffs2_sum_add_xref_mem(s, rr, ofs - jeb->offset); diff --git a/fs/jffs2/summary.c b/fs/jffs2/summary.c index 0b02fc79e4d1..c430f1d217e2 100644 --- a/fs/jffs2/summary.c +++ b/fs/jffs2/summary.c @@ -310,8 +310,6 @@ int jffs2_sum_add_kvec(struct jffs2_sb_info *c, const struct kvec *invecs, #ifdef CONFIG_JFFS2_FS_XATTR case JFFS2_NODETYPE_XATTR: { struct jffs2_sum_xattr_mem *temp; - if (je32_to_cpu(node->x.version) == 0xffffffff) - return 0; temp = kmalloc(sizeof(struct jffs2_sum_xattr_mem), GFP_KERNEL); if (!temp) goto no_mem; @@ -327,10 +325,6 @@ int jffs2_sum_add_kvec(struct jffs2_sb_info *c, const struct kvec *invecs, } case JFFS2_NODETYPE_XREF: { struct jffs2_sum_xref_mem *temp; - - if (je32_to_cpu(node->r.ino) == 0xffffffff - && je32_to_cpu(node->r.xid) == 0xffffffff) - return 0; temp = kmalloc(sizeof(struct jffs2_sum_xref_mem), GFP_KERNEL); if (!temp) goto no_mem; @@ -483,22 +477,20 @@ static int jffs2_sum_process_sum_data(struct jffs2_sb_info *c, struct jffs2_eras xd = jffs2_setup_xattr_datum(c, je32_to_cpu(spx->xid), je32_to_cpu(spx->version)); - if (IS_ERR(xd)) { - if (PTR_ERR(xd) == -EEXIST) { - /* a newer version of xd exists */ - if ((err = jffs2_scan_dirty_space(c, jeb, je32_to_cpu(spx->totlen)))) - return err; - sp += JFFS2_SUMMARY_XATTR_SIZE; - break; - } - JFFS2_NOTICE("allocation of xattr_datum failed\n"); + if (IS_ERR(xd)) return PTR_ERR(xd); + if (xd->version > je32_to_cpu(spx->version)) { + /* node is not the newest one */ + struct jffs2_raw_node_ref *raw + = sum_link_node_ref(c, jeb, je32_to_cpu(spx->offset) | REF_UNCHECKED, + PAD(je32_to_cpu(spx->totlen)), NULL); + raw->next_in_ino = xd->node->next_in_ino; + xd->node->next_in_ino = raw; + } else { + xd->version = je32_to_cpu(spx->version); + sum_link_node_ref(c, jeb, je32_to_cpu(spx->offset) | REF_UNCHECKED, + PAD(je32_to_cpu(spx->totlen)), (void *)xd); } - - xd->node = sum_link_node_ref(c, jeb, je32_to_cpu(spx->offset) | REF_UNCHECKED, - PAD(je32_to_cpu(spx->totlen)), NULL); - /* FIXME */ xd->node->next_in_ino = (void *)xd; - *pseudo_random += je32_to_cpu(spx->xid); sp += JFFS2_SUMMARY_XATTR_SIZE; @@ -519,14 +511,11 @@ static int jffs2_sum_process_sum_data(struct jffs2_sb_info *c, struct jffs2_eras JFFS2_NOTICE("allocation of xattr_datum failed\n"); return -ENOMEM; } - ref->ino = 0xfffffffe; - ref->xid = 0xfffffffd; ref->next = c->xref_temp; c->xref_temp = ref; - ref->node = sum_link_node_ref(c, jeb, je32_to_cpu(spr->offset) | REF_UNCHECKED, - PAD(sizeof(struct jffs2_raw_xref)), NULL); - /* FIXME */ ref->node->next_in_ino = (void *)ref; + sum_link_node_ref(c, jeb, je32_to_cpu(spr->offset) | REF_UNCHECKED, + PAD(sizeof(struct jffs2_raw_xref)), (void *)ref); *pseudo_random += ref->node->flash_offset; sp += JFFS2_SUMMARY_XREF_SIZE; diff --git a/fs/jffs2/xattr.c b/fs/jffs2/xattr.c index 2d82e250be34..03871ab7c26d 100644 --- a/fs/jffs2/xattr.c +++ b/fs/jffs2/xattr.c @@ -23,18 +23,15 @@ * xattr_datum_hashkey(xprefix, xname, xvalue, xsize) * is used to calcurate xdatum hashkey. The reminder of hashkey into XATTRINDEX_HASHSIZE is * the index of the xattr name/value pair cache (c->xattrindex). + * is_xattr_datum_unchecked(c, xd) + * returns 1, if xdatum contains any unchecked raw nodes. if all raw nodes are not + * unchecked, it returns 0. * unload_xattr_datum(c, xd) * is used to release xattr name/value pair and detach from c->xattrindex. * reclaim_xattr_datum(c) * is used to reclaim xattr name/value pairs on the xattr name/value pair cache when * memory usage by cache is over c->xdatum_mem_threshold. Currentry, this threshold * is hard coded as 32KiB. - * delete_xattr_datum_node(c, xd) - * is used to delete a jffs2 node is dominated by xdatum. When EBS(Erase Block Summary) is - * enabled, it overwrites the obsolete node by myself. - * delete_xattr_datum(c, xd) - * is used to delete jffs2_xattr_datum object. It must be called with 0-value of reference - * counter. (It means how many jffs2_xattr_ref object refers this xdatum.) * do_verify_xattr_datum(c, xd) * is used to load the xdatum informations without name/value pair from the medium. * It's necessary once, because those informations are not collected during mounting @@ -53,8 +50,13 @@ * is used to write xdatum to medium. xd->version will be incremented. * create_xattr_datum(c, xprefix, xname, xvalue, xsize) * is used to create new xdatum and write to medium. + * delete_xattr_datum_delay(c, xd) + * is used to delete a xdatum without 'delete marker'. It has a possibility to detect + * orphan xdatum on next mounting. + * delete_xattr_datum(c, xd) + * is used to delete a xdatum with 'delete marker'. Calling jffs2_reserve_space() is + * necessary before this function. * -------------------------------------------------- */ - static uint32_t xattr_datum_hashkey(int xprefix, const char *xname, const char *xvalue, int xsize) { int name_len = strlen(xname); @@ -62,6 +64,22 @@ static uint32_t xattr_datum_hashkey(int xprefix, const char *xname, const char * return crc32(xprefix, xname, name_len) ^ crc32(xprefix, xvalue, xsize); } +static int is_xattr_datum_unchecked(struct jffs2_sb_info *c, struct jffs2_xattr_datum *xd) +{ + struct jffs2_raw_node_ref *raw; + int rc = 0; + + spin_lock(&c->erase_completion_lock); + for (raw=xd->node; raw != (void *)xd; raw=raw->next_in_ino) { + if (ref_flags(raw) == REF_UNCHECKED) { + rc = 1; + break; + } + } + spin_unlock(&c->erase_completion_lock); + return rc; +} + static void unload_xattr_datum(struct jffs2_sb_info *c, struct jffs2_xattr_datum *xd) { /* must be called under down_write(xattr_sem) */ @@ -107,80 +125,39 @@ static void reclaim_xattr_datum(struct jffs2_sb_info *c) before, c->xdatum_mem_usage, before - c->xdatum_mem_usage); } -static void delete_xattr_datum_node(struct jffs2_sb_info *c, struct jffs2_xattr_datum *xd) -{ - /* must be called under down_write(xattr_sem) */ - struct jffs2_raw_xattr rx; - size_t length; - int rc; - - if (!xd->node) { - JFFS2_WARNING("xdatum (xid=%u) is removed twice.\n", xd->xid); - return; - } - if (jffs2_sum_active()) { - memset(&rx, 0xff, sizeof(struct jffs2_raw_xattr)); - rc = jffs2_flash_read(c, ref_offset(xd->node), - sizeof(struct jffs2_unknown_node), - &length, (char *)&rx); - if (rc || length != sizeof(struct jffs2_unknown_node)) { - JFFS2_ERROR("jffs2_flash_read()=%d, req=%zu, read=%zu at %#08x\n", - rc, sizeof(struct jffs2_unknown_node), - length, ref_offset(xd->node)); - } - rc = jffs2_flash_write(c, ref_offset(xd->node), sizeof(rx), - &length, (char *)&rx); - if (rc || length != sizeof(struct jffs2_raw_xattr)) { - JFFS2_ERROR("jffs2_flash_write()=%d, req=%zu, wrote=%zu ar %#08x\n", - rc, sizeof(rx), length, ref_offset(xd->node)); - } - } - spin_lock(&c->erase_completion_lock); - xd->node->next_in_ino = NULL; - spin_unlock(&c->erase_completion_lock); - jffs2_mark_node_obsolete(c, xd->node); - xd->node = NULL; -} - -static void delete_xattr_datum(struct jffs2_sb_info *c, struct jffs2_xattr_datum *xd) -{ - /* must be called under down_write(xattr_sem) */ - BUG_ON(xd->refcnt); - - unload_xattr_datum(c, xd); - if (xd->node) { - delete_xattr_datum_node(c, xd); - xd->node = NULL; - } - jffs2_free_xattr_datum(xd); -} - static int do_verify_xattr_datum(struct jffs2_sb_info *c, struct jffs2_xattr_datum *xd) { /* must be called under down_write(xattr_sem) */ struct jffs2_eraseblock *jeb; + struct jffs2_raw_node_ref *raw; struct jffs2_raw_xattr rx; size_t readlen; - uint32_t crc, totlen; + uint32_t crc, offset, totlen; int rc; - BUG_ON(!xd->node); - BUG_ON(ref_flags(xd->node) != REF_UNCHECKED); + spin_lock(&c->erase_completion_lock); + offset = ref_offset(xd->node); + if (ref_flags(xd->node) == REF_PRISTINE) + goto complete; + spin_unlock(&c->erase_completion_lock); - rc = jffs2_flash_read(c, ref_offset(xd->node), sizeof(rx), &readlen, (char *)&rx); + rc = jffs2_flash_read(c, offset, sizeof(rx), &readlen, (char *)&rx); if (rc || readlen != sizeof(rx)) { JFFS2_WARNING("jffs2_flash_read()=%d, req=%zu, read=%zu at %#08x\n", - rc, sizeof(rx), readlen, ref_offset(xd->node)); + rc, sizeof(rx), readlen, offset); return rc ? rc : -EIO; } crc = crc32(0, &rx, sizeof(rx) - 4); if (crc != je32_to_cpu(rx.node_crc)) { - if (je32_to_cpu(rx.node_crc) != 0xffffffff) - JFFS2_ERROR("node CRC failed at %#08x, read=%#08x, calc=%#08x\n", - ref_offset(xd->node), je32_to_cpu(rx.hdr_crc), crc); + JFFS2_ERROR("node CRC failed at %#08x, read=%#08x, calc=%#08x\n", + offset, je32_to_cpu(rx.hdr_crc), crc); + xd->flags |= JFFS2_XFLAGS_INVALID; return EIO; } - totlen = PAD(sizeof(rx) + rx.name_len + 1 + je16_to_cpu(rx.value_len)); + totlen = sizeof(rx); + if (xd->version != XDATUM_DELETE_MARKER) + totlen += rx.name_len + 1 + je16_to_cpu(rx.value_len); + totlen = PAD(totlen); if (je16_to_cpu(rx.magic) != JFFS2_MAGIC_BITMASK || je16_to_cpu(rx.nodetype) != JFFS2_NODETYPE_XATTR || je32_to_cpu(rx.totlen) != totlen @@ -188,11 +165,12 @@ static int do_verify_xattr_datum(struct jffs2_sb_info *c, struct jffs2_xattr_dat || je32_to_cpu(rx.version) != xd->version) { JFFS2_ERROR("inconsistent xdatum at %#08x, magic=%#04x/%#04x, " "nodetype=%#04x/%#04x, totlen=%u/%u, xid=%u/%u, version=%u/%u\n", - ref_offset(xd->node), je16_to_cpu(rx.magic), JFFS2_MAGIC_BITMASK, + offset, je16_to_cpu(rx.magic), JFFS2_MAGIC_BITMASK, je16_to_cpu(rx.nodetype), JFFS2_NODETYPE_XATTR, je32_to_cpu(rx.totlen), totlen, je32_to_cpu(rx.xid), xd->xid, je32_to_cpu(rx.version), xd->version); + xd->flags |= JFFS2_XFLAGS_INVALID; return EIO; } xd->xprefix = rx.xprefix; @@ -200,14 +178,17 @@ static int do_verify_xattr_datum(struct jffs2_sb_info *c, struct jffs2_xattr_dat xd->value_len = je16_to_cpu(rx.value_len); xd->data_crc = je32_to_cpu(rx.data_crc); - /* This JFFS2_NODETYPE_XATTR node is checked */ - jeb = &c->blocks[ref_offset(xd->node) / c->sector_size]; - totlen = PAD(je32_to_cpu(rx.totlen)); - spin_lock(&c->erase_completion_lock); - c->unchecked_size -= totlen; c->used_size += totlen; - jeb->unchecked_size -= totlen; jeb->used_size += totlen; - xd->node->flash_offset = ref_offset(xd->node) | REF_PRISTINE; + complete: + for (raw=xd->node; raw != (void *)xd; raw=raw->next_in_ino) { + jeb = &c->blocks[ref_offset(raw) / c->sector_size]; + totlen = PAD(ref_totlen(c, jeb, raw)); + if (ref_flags(raw) == REF_UNCHECKED) { + c->unchecked_size -= totlen; c->used_size += totlen; + jeb->unchecked_size -= totlen; jeb->used_size += totlen; + } + raw->flash_offset = ref_offset(raw) | ((xd->node==raw) ? REF_PRISTINE : REF_NORMAL); + } spin_unlock(&c->erase_completion_lock); /* unchecked xdatum is chained with c->xattr_unchecked */ @@ -227,7 +208,6 @@ static int do_load_xattr_datum(struct jffs2_sb_info *c, struct jffs2_xattr_datum uint32_t crc, length; int i, ret, retry = 0; - BUG_ON(!xd->node); BUG_ON(ref_flags(xd->node) != REF_PRISTINE); BUG_ON(!list_empty(&xd->xindex)); retry: @@ -253,6 +233,7 @@ static int do_load_xattr_datum(struct jffs2_sb_info *c, struct jffs2_xattr_datum " at %#08x, read: 0x%08x calculated: 0x%08x\n", ref_offset(xd->node), xd->data_crc, crc); kfree(data); + xd->flags |= JFFS2_XFLAGS_INVALID; return EIO; } @@ -286,16 +267,13 @@ static int load_xattr_datum(struct jffs2_sb_info *c, struct jffs2_xattr_datum *x * rc > 0 : Unrecoverable error, this node should be deleted. */ int rc = 0; - BUG_ON(xd->xname); - if (!xd->node) + + if (xd->xname) + return 0; + if (xd->flags & JFFS2_XFLAGS_INVALID) return EIO; - if (unlikely(ref_flags(xd->node) != REF_PRISTINE)) { + if (unlikely(is_xattr_datum_unchecked(c, xd))) rc = do_verify_xattr_datum(c, xd); - if (rc > 0) { - list_del_init(&xd->xindex); - delete_xattr_datum_node(c, xd); - } - } if (!rc) rc = do_load_xattr_datum(c, xd); return rc; @@ -304,36 +282,43 @@ static int load_xattr_datum(struct jffs2_sb_info *c, struct jffs2_xattr_datum *x static int save_xattr_datum(struct jffs2_sb_info *c, struct jffs2_xattr_datum *xd) { /* must be called under down_write(xattr_sem) */ - struct jffs2_raw_node_ref *raw; struct jffs2_raw_xattr rx; struct kvec vecs[2]; size_t length; - int rc, totlen; + int rc, totlen, nvecs = 1; uint32_t phys_ofs = write_ofs(c); - BUG_ON(!xd->xname); + BUG_ON(is_xattr_datum_dead(xd) || (xd->flags & JFFS2_XFLAGS_INVALID) + ? !!xd->xname : !xd->xname); vecs[0].iov_base = ℞ - vecs[0].iov_len = PAD(sizeof(rx)); - vecs[1].iov_base = xd->xname; - vecs[1].iov_len = xd->name_len + 1 + xd->value_len; - totlen = vecs[0].iov_len + vecs[1].iov_len; - + vecs[0].iov_len = totlen = sizeof(rx); + if (!is_xattr_datum_dead(xd) && !(xd->flags & JFFS2_XFLAGS_INVALID)) { + nvecs++; + vecs[1].iov_base = xd->xname; + vecs[1].iov_len = xd->name_len + 1 + xd->value_len; + totlen += vecs[1].iov_len; + } /* Setup raw-xattr */ + memset(&rx, 0, sizeof(rx)); rx.magic = cpu_to_je16(JFFS2_MAGIC_BITMASK); rx.nodetype = cpu_to_je16(JFFS2_NODETYPE_XATTR); rx.totlen = cpu_to_je32(PAD(totlen)); rx.hdr_crc = cpu_to_je32(crc32(0, &rx, sizeof(struct jffs2_unknown_node) - 4)); rx.xid = cpu_to_je32(xd->xid); - rx.version = cpu_to_je32(++xd->version); - rx.xprefix = xd->xprefix; - rx.name_len = xd->name_len; - rx.value_len = cpu_to_je16(xd->value_len); - rx.data_crc = cpu_to_je32(crc32(0, vecs[1].iov_base, vecs[1].iov_len)); + if (!is_xattr_datum_dead(xd) && !(xd->flags & JFFS2_XFLAGS_INVALID)) { + rx.version = cpu_to_je32(++xd->version); + rx.xprefix = xd->xprefix; + rx.name_len = xd->name_len; + rx.value_len = cpu_to_je16(xd->value_len); + rx.data_crc = cpu_to_je32(crc32(0, vecs[1].iov_base, vecs[1].iov_len)); + } else { + rx.version = cpu_to_je32(XDATUM_DELETE_MARKER); + } rx.node_crc = cpu_to_je32(crc32(0, &rx, sizeof(struct jffs2_raw_xattr) - 4)); - rc = jffs2_flash_writev(c, vecs, 2, phys_ofs, &length, 0); + rc = jffs2_flash_writev(c, vecs, nvecs, phys_ofs, &length, 0); if (rc || totlen != length) { JFFS2_WARNING("jffs2_flash_writev()=%d, req=%u, wrote=%zu, at %#08x\n", rc, totlen, length, phys_ofs); @@ -343,14 +328,8 @@ static int save_xattr_datum(struct jffs2_sb_info *c, struct jffs2_xattr_datum *x return rc; } - /* success */ - raw = jffs2_add_physical_node_ref(c, phys_ofs | REF_PRISTINE, PAD(totlen), NULL); - /* FIXME */ raw->next_in_ino = (void *)xd; - - if (xd->node) - delete_xattr_datum_node(c, xd); - xd->node = raw; + jffs2_add_physical_node_ref(c, phys_ofs | REF_PRISTINE, PAD(totlen), (void *)xd); dbg_xattr("success on saving xdatum (xid=%u, version=%u, xprefix=%u, xname='%s')\n", xd->xid, xd->version, xd->xprefix, xd->xname); @@ -426,6 +405,39 @@ static struct jffs2_xattr_datum *create_xattr_datum(struct jffs2_sb_info *c, return xd; } +static void delete_xattr_datum_delay(struct jffs2_sb_info *c, struct jffs2_xattr_datum *xd) +{ + /* must be called under down_write(xattr_sem) */ + BUG_ON(xd->refcnt); + + unload_xattr_datum(c, xd); + set_xattr_datum_dead(xd); + spin_lock(&c->erase_completion_lock); + list_add(&xd->xindex, &c->xattr_dead_list); + spin_unlock(&c->erase_completion_lock); + JFFS2_NOTICE("xdatum(xid=%u) was removed without delete marker. " + "An orphan xdatum may be detected on next mounting.\n", xd->xid); +} + +static void delete_xattr_datum(struct jffs2_sb_info *c, struct jffs2_xattr_datum *xd) +{ + /* must be called under jffs2_reserve_space() and down_write(xattr_sem) */ + int rc; + BUG_ON(xd->refcnt); + + unload_xattr_datum(c, xd); + set_xattr_datum_dead(xd); + rc = save_xattr_datum(c, xd); + if (rc) { + JFFS2_NOTICE("xdatum(xid=%u) was removed without delete marker. " + "An orphan xdatum may be detected on next mounting.\n", + xd->xid); + } + spin_lock(&c->erase_completion_lock); + list_add(&xd->xindex, &c->xattr_dead_list); + spin_unlock(&c->erase_completion_lock); +} + /* -------- xref related functions ------------------ * verify_xattr_ref(c, ref) * is used to load xref information from medium. Because summary data does not @@ -450,25 +462,29 @@ static struct jffs2_xattr_datum *create_xattr_datum(struct jffs2_sb_info *c, static int verify_xattr_ref(struct jffs2_sb_info *c, struct jffs2_xattr_ref *ref) { struct jffs2_eraseblock *jeb; + struct jffs2_raw_node_ref *raw; struct jffs2_raw_xref rr; size_t readlen; - uint32_t crc, totlen; + uint32_t crc, offset, totlen; int rc; - BUG_ON(ref_flags(ref->node) != REF_UNCHECKED); + spin_lock(&c->erase_completion_lock); + if (ref_flags(ref->node) != REF_UNCHECKED) + goto complete; + offset = ref_offset(ref->node); + spin_unlock(&c->erase_completion_lock); - rc = jffs2_flash_read(c, ref_offset(ref->node), sizeof(rr), &readlen, (char *)&rr); + rc = jffs2_flash_read(c, offset, sizeof(rr), &readlen, (char *)&rr); if (rc || sizeof(rr) != readlen) { JFFS2_WARNING("jffs2_flash_read()=%d, req=%zu, read=%zu, at %#08x\n", - rc, sizeof(rr), readlen, ref_offset(ref->node)); + rc, sizeof(rr), readlen, offset); return rc ? rc : -EIO; } /* obsolete node */ crc = crc32(0, &rr, sizeof(rr) - 4); if (crc != je32_to_cpu(rr.node_crc)) { - if (je32_to_cpu(rr.node_crc) != 0xffffffff) - JFFS2_ERROR("node CRC failed at %#08x, read=%#08x, calc=%#08x\n", - ref_offset(ref->node), je32_to_cpu(rr.node_crc), crc); + JFFS2_ERROR("node CRC failed at %#08x, read=%#08x, calc=%#08x\n", + offset, je32_to_cpu(rr.node_crc), crc); return EIO; } if (je16_to_cpu(rr.magic) != JFFS2_MAGIC_BITMASK @@ -476,22 +492,28 @@ static int verify_xattr_ref(struct jffs2_sb_info *c, struct jffs2_xattr_ref *ref || je32_to_cpu(rr.totlen) != PAD(sizeof(rr))) { JFFS2_ERROR("inconsistent xref at %#08x, magic=%#04x/%#04x, " "nodetype=%#04x/%#04x, totlen=%u/%zu\n", - ref_offset(ref->node), je16_to_cpu(rr.magic), JFFS2_MAGIC_BITMASK, + offset, je16_to_cpu(rr.magic), JFFS2_MAGIC_BITMASK, je16_to_cpu(rr.nodetype), JFFS2_NODETYPE_XREF, je32_to_cpu(rr.totlen), PAD(sizeof(rr))); return EIO; } ref->ino = je32_to_cpu(rr.ino); ref->xid = je32_to_cpu(rr.xid); - - /* fixup superblock/eraseblock info */ - jeb = &c->blocks[ref_offset(ref->node) / c->sector_size]; - totlen = PAD(sizeof(rr)); + ref->xseqno = je32_to_cpu(rr.xseqno); + if (ref->xseqno > c->highest_xseqno) + c->highest_xseqno = (ref->xseqno & ~XREF_DELETE_MARKER); spin_lock(&c->erase_completion_lock); - c->unchecked_size -= totlen; c->used_size += totlen; - jeb->unchecked_size -= totlen; jeb->used_size += totlen; - ref->node->flash_offset = ref_offset(ref->node) | REF_PRISTINE; + complete: + for (raw=ref->node; raw != (void *)ref; raw=raw->next_in_ino) { + jeb = &c->blocks[ref_offset(raw) / c->sector_size]; + totlen = PAD(ref_totlen(c, jeb, raw)); + if (ref_flags(raw) == REF_UNCHECKED) { + c->unchecked_size -= totlen; c->used_size += totlen; + jeb->unchecked_size -= totlen; jeb->used_size += totlen; + } + raw->flash_offset = ref_offset(raw) | ((ref->node==raw) ? REF_PRISTINE : REF_NORMAL); + } spin_unlock(&c->erase_completion_lock); dbg_xattr("success on verifying xref (ino=%u, xid=%u) at %#08x\n", @@ -499,58 +521,12 @@ static int verify_xattr_ref(struct jffs2_sb_info *c, struct jffs2_xattr_ref *ref return 0; } -static void delete_xattr_ref_node(struct jffs2_sb_info *c, struct jffs2_xattr_ref *ref) -{ - struct jffs2_raw_xref rr; - size_t length; - int rc; - - if (jffs2_sum_active()) { - memset(&rr, 0xff, sizeof(rr)); - rc = jffs2_flash_read(c, ref_offset(ref->node), - sizeof(struct jffs2_unknown_node), - &length, (char *)&rr); - if (rc || length != sizeof(struct jffs2_unknown_node)) { - JFFS2_ERROR("jffs2_flash_read()=%d, req=%zu, read=%zu at %#08x\n", - rc, sizeof(struct jffs2_unknown_node), - length, ref_offset(ref->node)); - } - rc = jffs2_flash_write(c, ref_offset(ref->node), sizeof(rr), - &length, (char *)&rr); - if (rc || length != sizeof(struct jffs2_raw_xref)) { - JFFS2_ERROR("jffs2_flash_write()=%d, req=%zu, wrote=%zu at %#08x\n", - rc, sizeof(rr), length, ref_offset(ref->node)); - } - } - spin_lock(&c->erase_completion_lock); - ref->node->next_in_ino = NULL; - spin_unlock(&c->erase_completion_lock); - jffs2_mark_node_obsolete(c, ref->node); - ref->node = NULL; -} - -static void delete_xattr_ref(struct jffs2_sb_info *c, struct jffs2_xattr_ref *ref) -{ - /* must be called under down_write(xattr_sem) */ - struct jffs2_xattr_datum *xd; - - BUG_ON(!ref->node); - delete_xattr_ref_node(c, ref); - - xd = ref->xd; - xd->refcnt--; - if (!xd->refcnt) - delete_xattr_datum(c, xd); - jffs2_free_xattr_ref(ref); -} - static int save_xattr_ref(struct jffs2_sb_info *c, struct jffs2_xattr_ref *ref) { /* must be called under down_write(xattr_sem) */ - struct jffs2_raw_node_ref *raw; struct jffs2_raw_xref rr; size_t length; - uint32_t phys_ofs = write_ofs(c); + uint32_t xseqno, phys_ofs = write_ofs(c); int ret; rr.magic = cpu_to_je16(JFFS2_MAGIC_BITMASK); @@ -558,8 +534,16 @@ static int save_xattr_ref(struct jffs2_sb_info *c, struct jffs2_xattr_ref *ref) rr.totlen = cpu_to_je32(PAD(sizeof(rr))); rr.hdr_crc = cpu_to_je32(crc32(0, &rr, sizeof(struct jffs2_unknown_node) - 4)); - rr.ino = cpu_to_je32(ref->ic->ino); - rr.xid = cpu_to_je32(ref->xd->xid); + xseqno = (c->highest_xseqno += 2); + if (is_xattr_ref_dead(ref)) { + xseqno |= XREF_DELETE_MARKER; + rr.ino = cpu_to_je32(ref->ino); + rr.xid = cpu_to_je32(ref->xid); + } else { + rr.ino = cpu_to_je32(ref->ic->ino); + rr.xid = cpu_to_je32(ref->xd->xid); + } + rr.xseqno = cpu_to_je32(xseqno); rr.node_crc = cpu_to_je32(crc32(0, &rr, sizeof(rr) - 4)); ret = jffs2_flash_write(c, phys_ofs, sizeof(rr), &length, (char *)&rr); @@ -572,12 +556,9 @@ static int save_xattr_ref(struct jffs2_sb_info *c, struct jffs2_xattr_ref *ref) return ret; } - - raw = jffs2_add_physical_node_ref(c, phys_ofs | REF_PRISTINE, PAD(sizeof(rr)), NULL); - /* FIXME */ raw->next_in_ino = (void *)ref; - if (ref->node) - delete_xattr_ref_node(c, ref); - ref->node = raw; + /* success */ + ref->xseqno = xseqno; + jffs2_add_physical_node_ref(c, phys_ofs | REF_PRISTINE, PAD(sizeof(rr)), (void *)ref); dbg_xattr("success on saving xref (ino=%u, xid=%u)\n", ref->ic->ino, ref->xd->xid); @@ -610,22 +591,116 @@ static struct jffs2_xattr_ref *create_xattr_ref(struct jffs2_sb_info *c, struct return ref; /* success */ } +static void delete_xattr_ref_delay(struct jffs2_sb_info *c, struct jffs2_xattr_ref *ref) +{ + /* must be called under down_write(xattr_sem) */ + struct jffs2_xattr_datum *xd; + + set_xattr_ref_dead(ref); + xd = ref->xd; + ref->ino = ref->ic->ino; + ref->xid = ref->xd->xid; + spin_lock(&c->erase_completion_lock); + ref->next = c->xref_dead_list; + c->xref_dead_list = ref; + spin_unlock(&c->erase_completion_lock); + + JFFS2_NOTICE("xref(ino=%u, xid=%u) was removed without delete marker. " + "An orphan xref may be detected on next mounting.\n", + ref->ino, ref->xid); + + if (!--xd->refcnt) + delete_xattr_datum_delay(c, xd); +} + +static int delete_xattr_ref(struct jffs2_sb_info *c, struct jffs2_xattr_ref *ref, int enforce) +{ + /* must be called under jffs2_reserve_space() and down_write(xattr_sem) */ + struct jffs2_inode_cache *ic; + struct jffs2_xattr_datum *xd; + uint32_t length; + int rc; + + set_xattr_ref_dead(ref); + ic = ref->ic; + xd = ref->xd; + ref->ino = ic->ino; + ref->xid = xd->xid; + rc = save_xattr_ref(c, ref); + if (rc) { + if (!enforce) { + clr_xattr_ref_dead(ref); + ref->ic = ic; + ref->xd = xd; + return rc; + } + JFFS2_WARNING("could not write delete marker of xref(ino=%u, xid=%u). " + "An orphan xref may be detected on next mounting.\n", + ref->ic->ino, ref->xd->xid); + } + spin_lock(&c->erase_completion_lock); + ref->next = c->xref_dead_list; + c->xref_dead_list = ref; + spin_unlock(&c->erase_completion_lock); + + xd->refcnt--; + if (xd->refcnt) + return 0; + + /* delete xdatum */ + unload_xattr_datum(c, xd); + up_write(&c->xattr_sem); + jffs2_complete_reservation(c); + + rc = jffs2_reserve_space(c, PAD(sizeof(struct jffs2_raw_xattr)), &length, + ALLOC_DELETION, JFFS2_SUMMARY_XATTR_SIZE); + if (rc) { + down(&c->alloc_sem); + down_write(&c->xattr_sem); + delete_xattr_datum_delay(c, xd); + } else { + down_write(&c->xattr_sem); + delete_xattr_datum(c, xd); + } + return 0; +} + void jffs2_xattr_delete_inode(struct jffs2_sb_info *c, struct jffs2_inode_cache *ic) { /* It's called from jffs2_clear_inode() on inode removing. When an inode with XATTR is removed, those XATTRs must be removed. */ - struct jffs2_xattr_ref *ref, *_ref; + struct jffs2_xattr_ref *ref; + uint32_t length; + int rc, retry; if (!ic || ic->nlink > 0) return; - down_write(&c->xattr_sem); - for (ref = ic->xref; ref; ref = _ref) { - _ref = ref->next; - delete_xattr_ref(c, ref); + down_read(&c->xattr_sem); + if (!ic->xref) { + up_read(&c->xattr_sem); + return; } - ic->xref = NULL; + up_read(&c->xattr_sem); + retry: + rc = jffs2_reserve_space(c, PAD(sizeof(struct jffs2_raw_xref)), &length, + ALLOC_DELETION, JFFS2_SUMMARY_XREF_SIZE); + down_write(&c->xattr_sem); + if (ic->xref) { + ref = ic->xref; + ic->xref = ref->next; + if (rc) { + delete_xattr_ref_delay(c, ref); + } else { + delete_xattr_ref(c, ref, 1); + } + } + retry = ic->xref ? 1 : 0; up_write(&c->xattr_sem); + if (!rc) + jffs2_complete_reservation(c); + if (retry) + goto retry; } void jffs2_xattr_free_inode(struct jffs2_sb_info *c, struct jffs2_inode_cache *ic) @@ -655,7 +730,7 @@ static int check_xattr_ref_inode(struct jffs2_sb_info *c, struct jffs2_inode_cac * duplicate name/value pairs. If duplicate name/value pair would be found, * one will be removed. */ - struct jffs2_xattr_ref *ref, *cmp, **pref; + struct jffs2_xattr_ref *ref, *cmp, **pref, **pcmp; int rc = 0; if (likely(ic->flags & INO_FLAGS_XATTR_CHECKED)) @@ -668,27 +743,32 @@ static int check_xattr_ref_inode(struct jffs2_sb_info *c, struct jffs2_inode_cac rc = load_xattr_datum(c, ref->xd); if (unlikely(rc > 0)) { *pref = ref->next; - delete_xattr_ref(c, ref); + delete_xattr_ref_delay(c, ref); goto retry; } else if (unlikely(rc < 0)) goto out; } - for (cmp=ref->next, pref=&ref->next; cmp; pref=&cmp->next, cmp=cmp->next) { + for (cmp=ref->next, pcmp=&ref->next; cmp; pcmp=&cmp->next, cmp=cmp->next) { if (!cmp->xd->xname) { ref->xd->flags |= JFFS2_XFLAGS_BIND; rc = load_xattr_datum(c, cmp->xd); ref->xd->flags &= ~JFFS2_XFLAGS_BIND; if (unlikely(rc > 0)) { - *pref = cmp->next; - delete_xattr_ref(c, cmp); + *pcmp = cmp->next; + delete_xattr_ref_delay(c, cmp); goto retry; } else if (unlikely(rc < 0)) goto out; } if (ref->xd->xprefix == cmp->xd->xprefix && !strcmp(ref->xd->xname, cmp->xd->xname)) { - *pref = cmp->next; - delete_xattr_ref(c, cmp); + if (ref->xseqno > cmp->xseqno) { + *pcmp = cmp->next; + delete_xattr_ref_delay(c, cmp); + } else { + *pref = ref->next; + delete_xattr_ref_delay(c, ref); + } goto retry; } } @@ -719,9 +799,13 @@ void jffs2_init_xattr_subsystem(struct jffs2_sb_info *c) for (i=0; i < XATTRINDEX_HASHSIZE; i++) INIT_LIST_HEAD(&c->xattrindex[i]); INIT_LIST_HEAD(&c->xattr_unchecked); + INIT_LIST_HEAD(&c->xattr_dead_list); + c->xref_dead_list = NULL; c->xref_temp = NULL; init_rwsem(&c->xattr_sem); + c->highest_xid = 0; + c->highest_xseqno = 0; c->xdatum_mem_usage = 0; c->xdatum_mem_threshold = 32 * 1024; /* Default 32KB */ } @@ -751,7 +835,11 @@ void jffs2_clear_xattr_subsystem(struct jffs2_sb_info *c) _ref = ref->next; jffs2_free_xattr_ref(ref); } - c->xref_temp = NULL; + + for (ref=c->xref_dead_list; ref; ref = _ref) { + _ref = ref->next; + jffs2_free_xattr_ref(ref); + } for (i=0; i < XATTRINDEX_HASHSIZE; i++) { list_for_each_entry_safe(xd, _xd, &c->xattrindex[i], xindex) { @@ -761,64 +849,120 @@ void jffs2_clear_xattr_subsystem(struct jffs2_sb_info *c) jffs2_free_xattr_datum(xd); } } + + list_for_each_entry_safe(xd, _xd, &c->xattr_dead_list, xindex) { + list_del(&xd->xindex); + jffs2_free_xattr_datum(xd); + } } +#define XREF_TMPHASH_SIZE (128) void jffs2_build_xattr_subsystem(struct jffs2_sb_info *c) { struct jffs2_xattr_ref *ref, *_ref; + struct jffs2_xattr_ref *xref_tmphash[XREF_TMPHASH_SIZE]; struct jffs2_xattr_datum *xd, *_xd; struct jffs2_inode_cache *ic; - int i, xdatum_count =0, xdatum_unchecked_count = 0, xref_count = 0; + struct jffs2_raw_node_ref *raw; + int i, xdatum_count = 0, xdatum_unchecked_count = 0, xref_count = 0; BUG_ON(!(c->flags & JFFS2_SB_FLAG_BUILDING)); + /* Phase.1 : Drop dead xdatum */ + for (i=0; i < XATTRINDEX_HASHSIZE; i++) { + list_for_each_entry_safe(xd, _xd, &c->xattrindex[i], xindex) { + BUG_ON(xd->node == (void *)xd); + if (is_xattr_datum_dead(xd)) { + list_del_init(&xd->xindex); + list_add(&xd->xindex, &c->xattr_unchecked); + } + } + } - /* Phase.1 */ + /* Phase.2 : Merge same xref */ + for (i=0; i < XREF_TMPHASH_SIZE; i++) + xref_tmphash[i] = NULL; for (ref=c->xref_temp; ref; ref=_ref) { + struct jffs2_xattr_ref *tmp; + _ref = ref->next; - /* checking REF_UNCHECKED nodes */ if (ref_flags(ref->node) != REF_PRISTINE) { if (verify_xattr_ref(c, ref)) { - delete_xattr_ref_node(c, ref); + BUG_ON(ref->node->next_in_ino != (void *)ref); + ref->node->next_in_ino = NULL; + jffs2_mark_node_obsolete(c, ref->node); jffs2_free_xattr_ref(ref); continue; } } - /* At this point, ref->xid and ref->ino contain XID and inode number. - ref->xd and ref->ic are not valid yet. */ - xd = jffs2_find_xattr_datum(c, ref->xid); - ic = jffs2_get_ino_cache(c, ref->ino); - if (!xd || !ic) { - if (ref_flags(ref->node) != REF_UNCHECKED) - JFFS2_WARNING("xref(ino=%u, xid=%u) is orphan. \n", - ref->ino, ref->xid); - delete_xattr_ref_node(c, ref); + + i = (ref->ino ^ ref->xid) % XREF_TMPHASH_SIZE; + for (tmp=xref_tmphash[i]; tmp; tmp=tmp->next) { + if (tmp->ino == ref->ino && tmp->xid == ref->xid) + break; + } + if (tmp) { + raw = ref->node; + if (ref->xseqno > tmp->xseqno) { + tmp->xseqno = ref->xseqno; + raw->next_in_ino = tmp->node; + tmp->node = raw; + } else { + raw->next_in_ino = tmp->node->next_in_ino; + tmp->node->next_in_ino = raw; + } jffs2_free_xattr_ref(ref); continue; + } else { + ref->next = xref_tmphash[i]; + xref_tmphash[i] = ref; } - ref->xd = xd; - ref->ic = ic; - xd->refcnt++; - ref->next = ic->xref; - ic->xref = ref; - xref_count++; } c->xref_temp = NULL; - /* After this, ref->xid/ino are NEVER used. */ - /* Phase.2 */ + /* Phase.3 : Bind xref with inode_cache and xattr_datum */ + for (i=0; i < XREF_TMPHASH_SIZE; i++) { + for (ref=xref_tmphash[i]; ref; ref=_ref) { + _ref = ref->next; + if (is_xattr_ref_dead(ref)) { + ref->next = c->xref_dead_list; + c->xref_dead_list = ref; + continue; + } + /* At this point, ref->xid and ref->ino contain XID and inode number. + ref->xd and ref->ic are not valid yet. */ + xd = jffs2_find_xattr_datum(c, ref->xid); + ic = jffs2_get_ino_cache(c, ref->ino); + if (!xd || !ic) { + JFFS2_WARNING("xref(ino=%u, xid=%u, xseqno=%u) is orphan. \n", + ref->ino, ref->xid, ref->xseqno); + set_xattr_ref_dead(ref); + ref->next = c->xref_dead_list; + c->xref_dead_list = ref; + continue; + } + ref->xd = xd; + ref->ic = ic; + xd->refcnt++; + ref->next = ic->xref; + ic->xref = ref; + xref_count++; + } + } + + /* Phase.4 : Link unchecked xdatum to xattr_unchecked list */ for (i=0; i < XATTRINDEX_HASHSIZE; i++) { list_for_each_entry_safe(xd, _xd, &c->xattrindex[i], xindex) { list_del_init(&xd->xindex); if (!xd->refcnt) { - if (ref_flags(xd->node) != REF_UNCHECKED) - JFFS2_WARNING("orphan xdatum(xid=%u, version=%u) at %#08x\n", - xd->xid, xd->version, ref_offset(xd->node)); - delete_xattr_datum(c, xd); + JFFS2_WARNING("orphan xdatum(xid=%u, version=%u)\n", + xd->xid, xd->version); + set_xattr_datum_dead(xd); + list_add(&xd->xindex, &c->xattr_unchecked); continue; } - if (ref_flags(xd->node) != REF_PRISTINE) { - dbg_xattr("unchecked xdatum(xid=%u) at %#08x\n", - xd->xid, ref_offset(xd->node)); + if (is_xattr_datum_unchecked(c, xd)) { + dbg_xattr("unchecked xdatum(xid=%u, version=%u)\n", + xd->xid, xd->version); list_add(&xd->xindex, &c->xattr_unchecked); xdatum_unchecked_count++; } @@ -833,28 +977,18 @@ void jffs2_build_xattr_subsystem(struct jffs2_sb_info *c) struct jffs2_xattr_datum *jffs2_setup_xattr_datum(struct jffs2_sb_info *c, uint32_t xid, uint32_t version) { - struct jffs2_xattr_datum *xd, *_xd; + struct jffs2_xattr_datum *xd; - _xd = jffs2_find_xattr_datum(c, xid); - if (_xd) { - dbg_xattr("duplicate xdatum (xid=%u, version=%u/%u) at %#08x\n", - xid, version, _xd->version, ref_offset(_xd->node)); - if (version < _xd->version) - return ERR_PTR(-EEXIST); - } - xd = jffs2_alloc_xattr_datum(); - if (!xd) - return ERR_PTR(-ENOMEM); - xd->xid = xid; - xd->version = version; - if (xd->xid > c->highest_xid) - c->highest_xid = xd->xid; - list_add_tail(&xd->xindex, &c->xattrindex[xid % XATTRINDEX_HASHSIZE]); - - if (_xd) { - list_del_init(&_xd->xindex); - delete_xattr_datum_node(c, _xd); - jffs2_free_xattr_datum(_xd); + xd = jffs2_find_xattr_datum(c, xid); + if (!xd) { + xd = jffs2_alloc_xattr_datum(); + if (!xd) + return ERR_PTR(-ENOMEM); + xd->xid = xid; + xd->version = version; + if (xd->xid > c->highest_xid) + c->highest_xid = xd->xid; + list_add_tail(&xd->xindex, &c->xattrindex[xid % XATTRINDEX_HASHSIZE]); } return xd; } @@ -945,7 +1079,7 @@ ssize_t jffs2_listxattr(struct dentry *dentry, char *buffer, size_t size) rc = load_xattr_datum(c, xd); if (unlikely(rc > 0)) { *pref = ref->next; - delete_xattr_ref(c, ref); + delete_xattr_ref_delay(c, ref); goto retry; } else if (unlikely(rc < 0)) goto out; @@ -1006,7 +1140,7 @@ int do_jffs2_getxattr(struct inode *inode, int xprefix, const char *xname, rc = load_xattr_datum(c, xd); if (unlikely(rc > 0)) { *pref = ref->next; - delete_xattr_ref(c, ref); + delete_xattr_ref_delay(c, ref); goto retry; } else if (unlikely(rc < 0)) { goto out; @@ -1069,7 +1203,7 @@ int do_jffs2_setxattr(struct inode *inode, int xprefix, const char *xname, rc = load_xattr_datum(c, xd); if (unlikely(rc > 0)) { *pref = ref->next; - delete_xattr_ref(c, ref); + delete_xattr_ref_delay(c, ref); goto retry; } else if (unlikely(rc < 0)) goto out; @@ -1081,8 +1215,7 @@ int do_jffs2_setxattr(struct inode *inode, int xprefix, const char *xname, } if (!buffer) { *pref = ref->next; - delete_xattr_ref(c, ref); - rc = 0; + rc = delete_xattr_ref(c, ref, 0); goto out; } goto found; @@ -1094,7 +1227,7 @@ int do_jffs2_setxattr(struct inode *inode, int xprefix, const char *xname, goto out; } if (!buffer) { - rc = -EINVAL; + rc = -ENODATA; goto out; } found: @@ -1110,16 +1243,15 @@ int do_jffs2_setxattr(struct inode *inode, int xprefix, const char *xname, request = PAD(sizeof(struct jffs2_raw_xref)); rc = jffs2_reserve_space(c, request, &length, ALLOC_NORMAL, JFFS2_SUMMARY_XREF_SIZE); + down_write(&c->xattr_sem); if (rc) { JFFS2_WARNING("jffs2_reserve_space()=%d, request=%u\n", rc, request); - down_write(&c->xattr_sem); xd->refcnt--; if (!xd->refcnt) - delete_xattr_datum(c, xd); + delete_xattr_datum_delay(c, xd); up_write(&c->xattr_sem); return rc; } - down_write(&c->xattr_sem); if (ref) *pref = ref->next; newref = create_xattr_ref(c, ic, xd); @@ -1131,9 +1263,21 @@ int do_jffs2_setxattr(struct inode *inode, int xprefix, const char *xname, rc = PTR_ERR(newref); xd->refcnt--; if (!xd->refcnt) - delete_xattr_datum(c, xd); + delete_xattr_datum_delay(c, xd); } else if (ref) { - delete_xattr_ref(c, ref); + up_write(&c->xattr_sem); + jffs2_complete_reservation(c); + + rc = jffs2_reserve_space(c, request, &length, + ALLOC_DELETION, JFFS2_SUMMARY_XREF_SIZE); + down_write(&c->xattr_sem); + if (rc) { + JFFS2_WARNING("jffs2_reserve_space()=%d, request=%u\n", rc, request); + delete_xattr_ref_delay(c, ref); + up_write(&c->xattr_sem); + return 0; + } + delete_xattr_ref(c, ref, 1); } out: up_write(&c->xattr_sem); @@ -1142,38 +1286,37 @@ int do_jffs2_setxattr(struct inode *inode, int xprefix, const char *xname, } /* -------- garbage collector functions ------------- - * jffs2_garbage_collect_xattr_datum(c, xd) + * jffs2_garbage_collect_xattr_datum(c, xd, raw) * is used to move xdatum into new node. - * jffs2_garbage_collect_xattr_ref(c, ref) + * jffs2_garbage_collect_xattr_ref(c, ref, raw) * is used to move xref into new node. * jffs2_verify_xattr(c) * is used to call do_verify_xattr_datum() before garbage collecting. * -------------------------------------------------- */ -int jffs2_garbage_collect_xattr_datum(struct jffs2_sb_info *c, struct jffs2_xattr_datum *xd) +int jffs2_garbage_collect_xattr_datum(struct jffs2_sb_info *c, struct jffs2_xattr_datum *xd, + struct jffs2_raw_node_ref *raw) { uint32_t totlen, length, old_ofs; - int rc = -EINVAL; + int rc = 0; down_write(&c->xattr_sem); - BUG_ON(!xd->node); + if (xd->node != raw) + goto out; + if (is_xattr_datum_dead(xd) && (raw->next_in_ino == (void *)xd)) + goto out; old_ofs = ref_offset(xd->node); totlen = ref_totlen(c, c->gcblock, xd->node); - if (totlen < sizeof(struct jffs2_raw_xattr)) - goto out; - if (!xd->xname) { + if (!is_xattr_datum_dead(xd)) { rc = load_xattr_datum(c, xd); - if (unlikely(rc > 0)) { - delete_xattr_datum_node(c, xd); - rc = 0; - goto out; - } else if (unlikely(rc < 0)) + if (unlikely(rc < 0)) goto out; } + rc = jffs2_reserve_space_gc(c, totlen, &length, JFFS2_SUMMARY_XATTR_SIZE); - if (rc || length < totlen) { - JFFS2_WARNING("jffs2_reserve_space()=%d, request=%u\n", rc, totlen); + if (rc) { + JFFS2_WARNING("jffs2_reserve_space_gc()=%d, request=%u\n", rc, totlen); rc = rc ? rc : -EBADFD; goto out; } @@ -1182,27 +1325,33 @@ int jffs2_garbage_collect_xattr_datum(struct jffs2_sb_info *c, struct jffs2_xatt dbg_xattr("xdatum (xid=%u, version=%u) GC'ed from %#08x to %08x\n", xd->xid, xd->version, old_ofs, ref_offset(xd->node)); out: + if (!rc) + jffs2_mark_node_obsolete(c, raw); up_write(&c->xattr_sem); return rc; } -int jffs2_garbage_collect_xattr_ref(struct jffs2_sb_info *c, struct jffs2_xattr_ref *ref) +int jffs2_garbage_collect_xattr_ref(struct jffs2_sb_info *c, struct jffs2_xattr_ref *ref, + struct jffs2_raw_node_ref *raw) { uint32_t totlen, length, old_ofs; - int rc = -EINVAL; + int rc = 0; down_write(&c->xattr_sem); BUG_ON(!ref->node); - old_ofs = ref_offset(ref->node); - totlen = ref_totlen(c, c->gcblock, ref->node); - if (totlen != sizeof(struct jffs2_raw_xref)) + if (ref->node != raw) + goto out; + if (is_xattr_ref_dead(ref) && (raw->next_in_ino == (void *)ref)) goto out; + old_ofs = ref_offset(ref->node); + totlen = ref_totlen(c, c->gcblock, ref->node); + rc = jffs2_reserve_space_gc(c, totlen, &length, JFFS2_SUMMARY_XREF_SIZE); - if (rc || length < totlen) { - JFFS2_WARNING("%s: jffs2_reserve_space() = %d, request = %u\n", + if (rc) { + JFFS2_WARNING("%s: jffs2_reserve_space_gc() = %d, request = %u\n", __FUNCTION__, rc, totlen); rc = rc ? rc : -EBADFD; goto out; @@ -1212,6 +1361,8 @@ int jffs2_garbage_collect_xattr_ref(struct jffs2_sb_info *c, struct jffs2_xattr_ dbg_xattr("xref (ino=%u, xid=%u) GC'ed from %#08x to %08x\n", ref->ic->ino, ref->xd->xid, old_ofs, ref_offset(ref->node)); out: + if (!rc) + jffs2_mark_node_obsolete(c, raw); up_write(&c->xattr_sem); return rc; } @@ -1219,20 +1370,59 @@ int jffs2_garbage_collect_xattr_ref(struct jffs2_sb_info *c, struct jffs2_xattr_ int jffs2_verify_xattr(struct jffs2_sb_info *c) { struct jffs2_xattr_datum *xd, *_xd; + struct jffs2_eraseblock *jeb; + struct jffs2_raw_node_ref *raw; + uint32_t totlen; int rc; down_write(&c->xattr_sem); list_for_each_entry_safe(xd, _xd, &c->xattr_unchecked, xindex) { rc = do_verify_xattr_datum(c, xd); - if (rc == 0) { - list_del_init(&xd->xindex); - break; - } else if (rc > 0) { - list_del_init(&xd->xindex); - delete_xattr_datum_node(c, xd); + if (rc < 0) + continue; + list_del_init(&xd->xindex); + spin_lock(&c->erase_completion_lock); + for (raw=xd->node; raw != (void *)xd; raw=raw->next_in_ino) { + if (ref_flags(raw) != REF_UNCHECKED) + continue; + jeb = &c->blocks[ref_offset(raw) / c->sector_size]; + totlen = PAD(ref_totlen(c, jeb, raw)); + c->unchecked_size -= totlen; c->used_size += totlen; + jeb->unchecked_size -= totlen; jeb->used_size += totlen; + raw->flash_offset = ref_offset(raw) + | ((xd->node == (void *)raw) ? REF_PRISTINE : REF_NORMAL); } + if (is_xattr_datum_dead(xd)) + list_add(&xd->xindex, &c->xattr_dead_list); + spin_unlock(&c->erase_completion_lock); } up_write(&c->xattr_sem); - return list_empty(&c->xattr_unchecked) ? 1 : 0; } + +void jffs2_release_xattr_datum(struct jffs2_sb_info *c, struct jffs2_xattr_datum *xd) +{ + /* must be called under spin_lock(&c->erase_completion_lock) */ + if (xd->node != (void *)xd) + return; + + list_del(&xd->xindex); + jffs2_free_xattr_datum(xd); +} + +void jffs2_release_xattr_ref(struct jffs2_sb_info *c, struct jffs2_xattr_ref *ref) +{ + /* must be called under spin_lock(&c->erase_completion_lock) */ + struct jffs2_xattr_ref *tmp, **ptmp; + + if (ref->node != (void *)ref) + return; + + for (tmp=c->xref_dead_list, ptmp=&c->xref_dead_list; tmp; ptmp=&tmp->next, tmp=tmp->next) { + if (ref == tmp) { + *ptmp = tmp->next; + jffs2_free_xattr_ref(ref); + break; + } + } +} diff --git a/fs/jffs2/xattr.h b/fs/jffs2/xattr.h index 2c199856c582..06ab7b880212 100644 --- a/fs/jffs2/xattr.h +++ b/fs/jffs2/xattr.h @@ -16,6 +16,7 @@ #define JFFS2_XFLAGS_HOT (0x01) /* This datum is HOT */ #define JFFS2_XFLAGS_BIND (0x02) /* This datum is not reclaimed */ +#define JFFS2_XFLAGS_INVALID (0x80) /* This datum contains crc error */ struct jffs2_xattr_datum { @@ -23,7 +24,7 @@ struct jffs2_xattr_datum struct jffs2_raw_node_ref *node; uint8_t class; uint8_t flags; - uint16_t xprefix; /* see JFFS2_XATTR_PREFIX_* */ + uint16_t xprefix; /* see JFFS2_XATTR_PREFIX_* */ struct list_head xindex; /* chained from c->xattrindex[n] */ uint32_t refcnt; /* # of xattr_ref refers this */ @@ -47,6 +48,7 @@ struct jffs2_xattr_ref uint8_t flags; /* Currently unused */ u16 unused; + uint32_t xseqno; union { struct jffs2_inode_cache *ic; /* reference to jffs2_inode_cache */ uint32_t ino; /* only used in scanning/building */ @@ -58,6 +60,34 @@ struct jffs2_xattr_ref struct jffs2_xattr_ref *next; /* chained from ic->xref_list */ }; +#define XDATUM_DELETE_MARKER (0xffffffff) +#define XREF_DELETE_MARKER (0x00000001) +static inline int is_xattr_datum_dead(struct jffs2_xattr_datum *xd) +{ + return (xd->version == XDATUM_DELETE_MARKER); +} + +static inline void set_xattr_datum_dead(struct jffs2_xattr_datum *xd) +{ + xd->version = XDATUM_DELETE_MARKER; +} + +static inline int is_xattr_ref_dead(struct jffs2_xattr_ref *ref) +{ + return ((ref->xseqno & XREF_DELETE_MARKER) != 0); +} + +static inline void set_xattr_ref_dead(struct jffs2_xattr_ref *ref) +{ + ref->xseqno |= XREF_DELETE_MARKER; +} + +static inline void clr_xattr_ref_dead(struct jffs2_xattr_ref *ref) +{ + ref->xseqno &= ~XREF_DELETE_MARKER; +} + + #ifdef CONFIG_JFFS2_FS_XATTR extern void jffs2_init_xattr_subsystem(struct jffs2_sb_info *c); @@ -70,9 +100,13 @@ extern struct jffs2_xattr_datum *jffs2_setup_xattr_datum(struct jffs2_sb_info *c extern void jffs2_xattr_delete_inode(struct jffs2_sb_info *c, struct jffs2_inode_cache *ic); extern void jffs2_xattr_free_inode(struct jffs2_sb_info *c, struct jffs2_inode_cache *ic); -extern int jffs2_garbage_collect_xattr_datum(struct jffs2_sb_info *c, struct jffs2_xattr_datum *xd); -extern int jffs2_garbage_collect_xattr_ref(struct jffs2_sb_info *c, struct jffs2_xattr_ref *ref); +extern int jffs2_garbage_collect_xattr_datum(struct jffs2_sb_info *c, struct jffs2_xattr_datum *xd, + struct jffs2_raw_node_ref *raw); +extern int jffs2_garbage_collect_xattr_ref(struct jffs2_sb_info *c, struct jffs2_xattr_ref *ref, + struct jffs2_raw_node_ref *raw); extern int jffs2_verify_xattr(struct jffs2_sb_info *c); +extern void jffs2_release_xattr_datum(struct jffs2_sb_info *c, struct jffs2_xattr_datum *xd); +extern void jffs2_release_xattr_ref(struct jffs2_sb_info *c, struct jffs2_xattr_ref *ref); extern int do_jffs2_getxattr(struct inode *inode, int xprefix, const char *xname, char *buffer, size_t size); diff --git a/include/linux/jffs2.h b/include/linux/jffs2.h index c6f70660b371..c9c760700bc3 100644 --- a/include/linux/jffs2.h +++ b/include/linux/jffs2.h @@ -186,6 +186,7 @@ struct jffs2_raw_xref jint32_t hdr_crc; jint32_t ino; /* inode number */ jint32_t xid; /* XATTR identifier number */ + jint32_t xseqno; /* xref sequencial number */ jint32_t node_crc; } __attribute__((packed)); From a1ae76e96a18edf4b8a4d4e102762060c26d1c6a Mon Sep 17 00:00:00 2001 From: KaiGai Kohei Date: Sun, 11 Jun 2006 10:45:22 +0900 Subject: [PATCH 09/17] [JFFS2][XATTR] Fix ACL bug when updating null xattr by null ACL. This patch enable to handle the case when updating null xattr by null ACL. When we try to set NULL into NULL xattr, xattr subsystem returns -ENODATA. This patch enables to handle this error code. [2/3] jffs2-xattr-v6-02-fix_posixacl_bug.patch Signed-off-by: KaiGai Kohei Signed-off-by: David Woodhouse --- fs/jffs2/acl.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/jffs2/acl.c b/fs/jffs2/acl.c index 320dd48b834e..9c2077e7e081 100644 --- a/fs/jffs2/acl.c +++ b/fs/jffs2/acl.c @@ -267,6 +267,8 @@ static int jffs2_set_acl(struct inode *inode, int type, struct posix_acl *acl) } rc = do_jffs2_setxattr(inode, xprefix, "", value, size, 0); + if (!value && rc == -ENODATA) + rc = 0; if (value) kfree(value); if (!rc) { From 8a13695cbe4e8311b363f9bd25162904b984ca74 Mon Sep 17 00:00:00 2001 From: KaiGai Kohei Date: Sat, 24 Jun 2006 09:14:13 +0900 Subject: [PATCH 10/17] [JFFS2][XATTR] rid unnecessary writing of delete marker. In the followinf situation, an explicit delete marker is not necessary, because we can certainlly detect those obsolete xattr_datum or xattr_ref on next mounting. - When to delete xattr_datum node. - When to delete xattr_ref node on removing inode. - When to delete xattr_ref node on updating xattr. This patch rids writing delete marker in those situations. Signed-off-by: KaiGai Kohei Signed-off-by: David Woodhouse --- fs/jffs2/scan.c | 6 +- fs/jffs2/xattr.c | 303 ++++++++++++++++------------------------------- fs/jffs2/xattr.h | 23 +--- 3 files changed, 105 insertions(+), 227 deletions(-) diff --git a/fs/jffs2/scan.c b/fs/jffs2/scan.c index 79638f56c5ea..2bfdc33752d3 100644 --- a/fs/jffs2/scan.c +++ b/fs/jffs2/scan.c @@ -332,10 +332,8 @@ static int jffs2_scan_xattr_node(struct jffs2_sb_info *c, struct jffs2_erasebloc xid = je32_to_cpu(rx->xid); version = je32_to_cpu(rx->version); - totlen = sizeof(struct jffs2_raw_xattr); - if (version != XDATUM_DELETE_MARKER) - totlen += rx->name_len + 1 + je16_to_cpu(rx->value_len); - totlen = PAD(totlen); + totlen = PAD(sizeof(struct jffs2_raw_xattr) + + rx->name_len + 1 + je16_to_cpu(rx->value_len)); if (totlen != je32_to_cpu(rx->totlen)) { JFFS2_WARNING("node length mismatch at %#08x, read=%u, calc=%u\n", ofs, je32_to_cpu(rx->totlen), totlen); diff --git a/fs/jffs2/xattr.c b/fs/jffs2/xattr.c index 03871ab7c26d..7622f79cb5b4 100644 --- a/fs/jffs2/xattr.c +++ b/fs/jffs2/xattr.c @@ -50,12 +50,9 @@ * is used to write xdatum to medium. xd->version will be incremented. * create_xattr_datum(c, xprefix, xname, xvalue, xsize) * is used to create new xdatum and write to medium. - * delete_xattr_datum_delay(c, xd) - * is used to delete a xdatum without 'delete marker'. It has a possibility to detect - * orphan xdatum on next mounting. * delete_xattr_datum(c, xd) - * is used to delete a xdatum with 'delete marker'. Calling jffs2_reserve_space() is - * necessary before this function. + * is used to delete a xdatum. It marks xd JFFS2_XFLAGS_DEAD, and allows + * GC to reclaim those physical nodes. * -------------------------------------------------- */ static uint32_t xattr_datum_hashkey(int xprefix, const char *xname, const char *xvalue, int xsize) { @@ -154,10 +151,7 @@ static int do_verify_xattr_datum(struct jffs2_sb_info *c, struct jffs2_xattr_dat xd->flags |= JFFS2_XFLAGS_INVALID; return EIO; } - totlen = sizeof(rx); - if (xd->version != XDATUM_DELETE_MARKER) - totlen += rx.name_len + 1 + je16_to_cpu(rx.value_len); - totlen = PAD(totlen); + totlen = PAD(sizeof(rx) + rx.name_len + 1 + je16_to_cpu(rx.value_len)); if (je16_to_cpu(rx.magic) != JFFS2_MAGIC_BITMASK || je16_to_cpu(rx.nodetype) != JFFS2_NODETYPE_XATTR || je32_to_cpu(rx.totlen) != totlen @@ -268,6 +262,7 @@ static int load_xattr_datum(struct jffs2_sb_info *c, struct jffs2_xattr_datum *x */ int rc = 0; + BUG_ON(xd->flags & JFFS2_XFLAGS_DEAD); if (xd->xname) return 0; if (xd->flags & JFFS2_XFLAGS_INVALID) @@ -285,20 +280,18 @@ static int save_xattr_datum(struct jffs2_sb_info *c, struct jffs2_xattr_datum *x struct jffs2_raw_xattr rx; struct kvec vecs[2]; size_t length; - int rc, totlen, nvecs = 1; + int rc, totlen; uint32_t phys_ofs = write_ofs(c); - BUG_ON(is_xattr_datum_dead(xd) || (xd->flags & JFFS2_XFLAGS_INVALID) - ? !!xd->xname : !xd->xname); + BUG_ON(!xd->xname); + BUG_ON(xd->flags & (JFFS2_XFLAGS_DEAD|JFFS2_XFLAGS_INVALID)); vecs[0].iov_base = ℞ - vecs[0].iov_len = totlen = sizeof(rx); - if (!is_xattr_datum_dead(xd) && !(xd->flags & JFFS2_XFLAGS_INVALID)) { - nvecs++; - vecs[1].iov_base = xd->xname; - vecs[1].iov_len = xd->name_len + 1 + xd->value_len; - totlen += vecs[1].iov_len; - } + vecs[0].iov_len = sizeof(rx); + vecs[1].iov_base = xd->xname; + vecs[1].iov_len = xd->name_len + 1 + xd->value_len; + totlen = vecs[0].iov_len + vecs[1].iov_len; + /* Setup raw-xattr */ memset(&rx, 0, sizeof(rx)); rx.magic = cpu_to_je16(JFFS2_MAGIC_BITMASK); @@ -307,18 +300,14 @@ static int save_xattr_datum(struct jffs2_sb_info *c, struct jffs2_xattr_datum *x rx.hdr_crc = cpu_to_je32(crc32(0, &rx, sizeof(struct jffs2_unknown_node) - 4)); rx.xid = cpu_to_je32(xd->xid); - if (!is_xattr_datum_dead(xd) && !(xd->flags & JFFS2_XFLAGS_INVALID)) { - rx.version = cpu_to_je32(++xd->version); - rx.xprefix = xd->xprefix; - rx.name_len = xd->name_len; - rx.value_len = cpu_to_je16(xd->value_len); - rx.data_crc = cpu_to_je32(crc32(0, vecs[1].iov_base, vecs[1].iov_len)); - } else { - rx.version = cpu_to_je32(XDATUM_DELETE_MARKER); - } + rx.version = cpu_to_je32(++xd->version); + rx.xprefix = xd->xprefix; + rx.name_len = xd->name_len; + rx.value_len = cpu_to_je16(xd->value_len); + rx.data_crc = cpu_to_je32(crc32(0, vecs[1].iov_base, vecs[1].iov_len)); rx.node_crc = cpu_to_je32(crc32(0, &rx, sizeof(struct jffs2_raw_xattr) - 4)); - rc = jffs2_flash_writev(c, vecs, nvecs, phys_ofs, &length, 0); + rc = jffs2_flash_writev(c, vecs, 2, phys_ofs, &length, 0); if (rc || totlen != length) { JFFS2_WARNING("jffs2_flash_writev()=%d, req=%u, wrote=%zu, at %#08x\n", rc, totlen, length, phys_ofs); @@ -405,53 +394,36 @@ static struct jffs2_xattr_datum *create_xattr_datum(struct jffs2_sb_info *c, return xd; } -static void delete_xattr_datum_delay(struct jffs2_sb_info *c, struct jffs2_xattr_datum *xd) +static void delete_xattr_datum(struct jffs2_sb_info *c, struct jffs2_xattr_datum *xd) { /* must be called under down_write(xattr_sem) */ BUG_ON(xd->refcnt); unload_xattr_datum(c, xd); - set_xattr_datum_dead(xd); + xd->flags |= JFFS2_XFLAGS_DEAD; spin_lock(&c->erase_completion_lock); - list_add(&xd->xindex, &c->xattr_dead_list); - spin_unlock(&c->erase_completion_lock); - JFFS2_NOTICE("xdatum(xid=%u) was removed without delete marker. " - "An orphan xdatum may be detected on next mounting.\n", xd->xid); -} - -static void delete_xattr_datum(struct jffs2_sb_info *c, struct jffs2_xattr_datum *xd) -{ - /* must be called under jffs2_reserve_space() and down_write(xattr_sem) */ - int rc; - BUG_ON(xd->refcnt); - - unload_xattr_datum(c, xd); - set_xattr_datum_dead(xd); - rc = save_xattr_datum(c, xd); - if (rc) { - JFFS2_NOTICE("xdatum(xid=%u) was removed without delete marker. " - "An orphan xdatum may be detected on next mounting.\n", - xd->xid); + if (xd->node == (void *)xd) { + BUG_ON(!(xd->flags & JFFS2_XFLAGS_INVALID)); + jffs2_free_xattr_datum(xd); + } else { + list_add(&xd->xindex, &c->xattr_dead_list); } - spin_lock(&c->erase_completion_lock); - list_add(&xd->xindex, &c->xattr_dead_list); spin_unlock(&c->erase_completion_lock); + dbg_xattr("xdatum(xid=%u, version=%u) was removed.\n", xd->xid, xd->version); } /* -------- xref related functions ------------------ * verify_xattr_ref(c, ref) * is used to load xref information from medium. Because summary data does not * contain xid/ino, it's necessary to verify once while mounting process. - * delete_xattr_ref_node(c, ref) - * is used to delete a jffs2 node is dominated by xref. When EBS is enabled, - * it overwrites the obsolete node by myself. - * delete_xattr_ref(c, ref) - * is used to delete jffs2_xattr_ref object. If the reference counter of xdatum - * is refered by this xref become 0, delete_xattr_datum() is called later. * save_xattr_ref(c, ref) - * is used to write xref to medium. + * is used to write xref to medium. If delete marker is marked, it write + * a delete marker of xref into medium. * create_xattr_ref(c, ic, xd) * is used to create a new xref and write to medium. + * delete_xattr_ref(c, ref) + * is used to delete jffs2_xattr_ref. It marks xref XREF_DELETE_MARKER, + * and allows GC to reclaim those physical nodes. * jffs2_xattr_delete_inode(c, ic) * is called to remove xrefs related to obsolete inode when inode is unlinked. * jffs2_xattr_free_inode(c, ic) @@ -591,13 +563,13 @@ static struct jffs2_xattr_ref *create_xattr_ref(struct jffs2_sb_info *c, struct return ref; /* success */ } -static void delete_xattr_ref_delay(struct jffs2_sb_info *c, struct jffs2_xattr_ref *ref) +static void delete_xattr_ref(struct jffs2_sb_info *c, struct jffs2_xattr_ref *ref) { /* must be called under down_write(xattr_sem) */ struct jffs2_xattr_datum *xd; - set_xattr_ref_dead(ref); xd = ref->xd; + ref->xseqno |= XREF_DELETE_MARKER; ref->ino = ref->ic->ino; ref->xid = ref->xd->xid; spin_lock(&c->erase_completion_lock); @@ -605,102 +577,29 @@ static void delete_xattr_ref_delay(struct jffs2_sb_info *c, struct jffs2_xattr_r c->xref_dead_list = ref; spin_unlock(&c->erase_completion_lock); - JFFS2_NOTICE("xref(ino=%u, xid=%u) was removed without delete marker. " - "An orphan xref may be detected on next mounting.\n", - ref->ino, ref->xid); + dbg_xattr("xref(ino=%u, xid=%u, xseqno=%u) was removed.\n", + ref->ino, ref->xid, ref->xseqno); if (!--xd->refcnt) - delete_xattr_datum_delay(c, xd); -} - -static int delete_xattr_ref(struct jffs2_sb_info *c, struct jffs2_xattr_ref *ref, int enforce) -{ - /* must be called under jffs2_reserve_space() and down_write(xattr_sem) */ - struct jffs2_inode_cache *ic; - struct jffs2_xattr_datum *xd; - uint32_t length; - int rc; - - set_xattr_ref_dead(ref); - ic = ref->ic; - xd = ref->xd; - ref->ino = ic->ino; - ref->xid = xd->xid; - rc = save_xattr_ref(c, ref); - if (rc) { - if (!enforce) { - clr_xattr_ref_dead(ref); - ref->ic = ic; - ref->xd = xd; - return rc; - } - JFFS2_WARNING("could not write delete marker of xref(ino=%u, xid=%u). " - "An orphan xref may be detected on next mounting.\n", - ref->ic->ino, ref->xd->xid); - } - spin_lock(&c->erase_completion_lock); - ref->next = c->xref_dead_list; - c->xref_dead_list = ref; - spin_unlock(&c->erase_completion_lock); - - xd->refcnt--; - if (xd->refcnt) - return 0; - - /* delete xdatum */ - unload_xattr_datum(c, xd); - up_write(&c->xattr_sem); - jffs2_complete_reservation(c); - - rc = jffs2_reserve_space(c, PAD(sizeof(struct jffs2_raw_xattr)), &length, - ALLOC_DELETION, JFFS2_SUMMARY_XATTR_SIZE); - if (rc) { - down(&c->alloc_sem); - down_write(&c->xattr_sem); - delete_xattr_datum_delay(c, xd); - } else { - down_write(&c->xattr_sem); delete_xattr_datum(c, xd); - } - return 0; } void jffs2_xattr_delete_inode(struct jffs2_sb_info *c, struct jffs2_inode_cache *ic) { /* It's called from jffs2_clear_inode() on inode removing. When an inode with XATTR is removed, those XATTRs must be removed. */ - struct jffs2_xattr_ref *ref; - uint32_t length; - int rc, retry; + struct jffs2_xattr_ref *ref, *_ref; if (!ic || ic->nlink > 0) return; - down_read(&c->xattr_sem); - if (!ic->xref) { - up_read(&c->xattr_sem); - return; - } - up_read(&c->xattr_sem); - retry: - rc = jffs2_reserve_space(c, PAD(sizeof(struct jffs2_raw_xref)), &length, - ALLOC_DELETION, JFFS2_SUMMARY_XREF_SIZE); down_write(&c->xattr_sem); - if (ic->xref) { - ref = ic->xref; - ic->xref = ref->next; - if (rc) { - delete_xattr_ref_delay(c, ref); - } else { - delete_xattr_ref(c, ref, 1); - } + for (ref = ic->xref; ref; ref = _ref) { + _ref = ref->next; + delete_xattr_ref(c, ref); } - retry = ic->xref ? 1 : 0; + ic->xref = NULL; up_write(&c->xattr_sem); - if (!rc) - jffs2_complete_reservation(c); - if (retry) - goto retry; } void jffs2_xattr_free_inode(struct jffs2_sb_info *c, struct jffs2_inode_cache *ic) @@ -743,7 +642,7 @@ static int check_xattr_ref_inode(struct jffs2_sb_info *c, struct jffs2_inode_cac rc = load_xattr_datum(c, ref->xd); if (unlikely(rc > 0)) { *pref = ref->next; - delete_xattr_ref_delay(c, ref); + delete_xattr_ref(c, ref); goto retry; } else if (unlikely(rc < 0)) goto out; @@ -755,7 +654,7 @@ static int check_xattr_ref_inode(struct jffs2_sb_info *c, struct jffs2_inode_cac ref->xd->flags &= ~JFFS2_XFLAGS_BIND; if (unlikely(rc > 0)) { *pcmp = cmp->next; - delete_xattr_ref_delay(c, cmp); + delete_xattr_ref(c, cmp); goto retry; } else if (unlikely(rc < 0)) goto out; @@ -764,10 +663,10 @@ static int check_xattr_ref_inode(struct jffs2_sb_info *c, struct jffs2_inode_cac && !strcmp(ref->xd->xname, cmp->xd->xname)) { if (ref->xseqno > cmp->xseqno) { *pcmp = cmp->next; - delete_xattr_ref_delay(c, cmp); + delete_xattr_ref(c, cmp); } else { *pref = ref->next; - delete_xattr_ref_delay(c, ref); + delete_xattr_ref(c, ref); } goto retry; } @@ -865,20 +764,11 @@ void jffs2_build_xattr_subsystem(struct jffs2_sb_info *c) struct jffs2_inode_cache *ic; struct jffs2_raw_node_ref *raw; int i, xdatum_count = 0, xdatum_unchecked_count = 0, xref_count = 0; + int xdatum_orphan_count = 0, xref_orphan_count = 0, xref_dead_count = 0; BUG_ON(!(c->flags & JFFS2_SB_FLAG_BUILDING)); - /* Phase.1 : Drop dead xdatum */ - for (i=0; i < XATTRINDEX_HASHSIZE; i++) { - list_for_each_entry_safe(xd, _xd, &c->xattrindex[i], xindex) { - BUG_ON(xd->node == (void *)xd); - if (is_xattr_datum_dead(xd)) { - list_del_init(&xd->xindex); - list_add(&xd->xindex, &c->xattr_unchecked); - } - } - } - /* Phase.2 : Merge same xref */ + /* Phase.1 : Merge same xref */ for (i=0; i < XREF_TMPHASH_SIZE; i++) xref_tmphash[i] = NULL; for (ref=c->xref_temp; ref; ref=_ref) { @@ -919,13 +809,15 @@ void jffs2_build_xattr_subsystem(struct jffs2_sb_info *c) } c->xref_temp = NULL; - /* Phase.3 : Bind xref with inode_cache and xattr_datum */ + /* Phase.2 : Bind xref with inode_cache and xattr_datum */ for (i=0; i < XREF_TMPHASH_SIZE; i++) { for (ref=xref_tmphash[i]; ref; ref=_ref) { + xref_count++; _ref = ref->next; if (is_xattr_ref_dead(ref)) { ref->next = c->xref_dead_list; c->xref_dead_list = ref; + xref_dead_count++; continue; } /* At this point, ref->xid and ref->ino contain XID and inode number. @@ -933,11 +825,12 @@ void jffs2_build_xattr_subsystem(struct jffs2_sb_info *c) xd = jffs2_find_xattr_datum(c, ref->xid); ic = jffs2_get_ino_cache(c, ref->ino); if (!xd || !ic) { - JFFS2_WARNING("xref(ino=%u, xid=%u, xseqno=%u) is orphan. \n", - ref->ino, ref->xid, ref->xseqno); - set_xattr_ref_dead(ref); + dbg_xattr("xref(ino=%u, xid=%u, xseqno=%u) is orphan.\n", + ref->ino, ref->xid, ref->xseqno); + ref->xseqno |= XREF_DELETE_MARKER; ref->next = c->xref_dead_list; c->xref_dead_list = ref; + xref_orphan_count++; continue; } ref->xd = xd; @@ -945,19 +838,20 @@ void jffs2_build_xattr_subsystem(struct jffs2_sb_info *c) xd->refcnt++; ref->next = ic->xref; ic->xref = ref; - xref_count++; } } - /* Phase.4 : Link unchecked xdatum to xattr_unchecked list */ + /* Phase.3 : Link unchecked xdatum to xattr_unchecked list */ for (i=0; i < XATTRINDEX_HASHSIZE; i++) { list_for_each_entry_safe(xd, _xd, &c->xattrindex[i], xindex) { + xdatum_count++; list_del_init(&xd->xindex); if (!xd->refcnt) { - JFFS2_WARNING("orphan xdatum(xid=%u, version=%u)\n", - xd->xid, xd->version); - set_xattr_datum_dead(xd); + dbg_xattr("xdatum(xid=%u, version=%u) is orphan.\n", + xd->xid, xd->version); + xd->flags |= JFFS2_XFLAGS_DEAD; list_add(&xd->xindex, &c->xattr_unchecked); + xdatum_orphan_count++; continue; } if (is_xattr_datum_unchecked(c, xd)) { @@ -966,12 +860,14 @@ void jffs2_build_xattr_subsystem(struct jffs2_sb_info *c) list_add(&xd->xindex, &c->xattr_unchecked); xdatum_unchecked_count++; } - xdatum_count++; } } /* build complete */ - JFFS2_NOTICE("complete building xattr subsystem, %u of xdatum (%u unchecked) and " - "%u of xref found.\n", xdatum_count, xdatum_unchecked_count, xref_count); + JFFS2_NOTICE("complete building xattr subsystem, %u of xdatum" + " (%u unchecked, %u orphan) and " + "%u of xref (%u dead, %u orphan) found.\n", + xdatum_count, xdatum_unchecked_count, xdatum_orphan_count, + xref_count, xref_dead_count, xref_orphan_count); } struct jffs2_xattr_datum *jffs2_setup_xattr_datum(struct jffs2_sb_info *c, @@ -1079,7 +975,7 @@ ssize_t jffs2_listxattr(struct dentry *dentry, char *buffer, size_t size) rc = load_xattr_datum(c, xd); if (unlikely(rc > 0)) { *pref = ref->next; - delete_xattr_ref_delay(c, ref); + delete_xattr_ref(c, ref); goto retry; } else if (unlikely(rc < 0)) goto out; @@ -1140,7 +1036,7 @@ int do_jffs2_getxattr(struct inode *inode, int xprefix, const char *xname, rc = load_xattr_datum(c, xd); if (unlikely(rc > 0)) { *pref = ref->next; - delete_xattr_ref_delay(c, ref); + delete_xattr_ref(c, ref); goto retry; } else if (unlikely(rc < 0)) { goto out; @@ -1203,7 +1099,7 @@ int do_jffs2_setxattr(struct inode *inode, int xprefix, const char *xname, rc = load_xattr_datum(c, xd); if (unlikely(rc > 0)) { *pref = ref->next; - delete_xattr_ref_delay(c, ref); + delete_xattr_ref(c, ref); goto retry; } else if (unlikely(rc < 0)) goto out; @@ -1214,8 +1110,23 @@ int do_jffs2_setxattr(struct inode *inode, int xprefix, const char *xname, goto out; } if (!buffer) { - *pref = ref->next; - rc = delete_xattr_ref(c, ref, 0); + ref->ino = ic->ino; + ref->xid = xd->xid; + ref->xseqno |= XREF_DELETE_MARKER; + rc = save_xattr_ref(c, ref); + if (!rc) { + *pref = ref->next; + spin_lock(&c->erase_completion_lock); + ref->next = c->xref_dead_list; + c->xref_dead_list = ref; + spin_unlock(&c->erase_completion_lock); + if (!--xd->refcnt) + delete_xattr_datum(c, xd); + } else { + ref->ic = ic; + ref->xd = xd; + ref->xseqno &= ~XREF_DELETE_MARKER; + } goto out; } goto found; @@ -1248,7 +1159,7 @@ int do_jffs2_setxattr(struct inode *inode, int xprefix, const char *xname, JFFS2_WARNING("jffs2_reserve_space()=%d, request=%u\n", rc, request); xd->refcnt--; if (!xd->refcnt) - delete_xattr_datum_delay(c, xd); + delete_xattr_datum(c, xd); up_write(&c->xattr_sem); return rc; } @@ -1263,21 +1174,9 @@ int do_jffs2_setxattr(struct inode *inode, int xprefix, const char *xname, rc = PTR_ERR(newref); xd->refcnt--; if (!xd->refcnt) - delete_xattr_datum_delay(c, xd); + delete_xattr_datum(c, xd); } else if (ref) { - up_write(&c->xattr_sem); - jffs2_complete_reservation(c); - - rc = jffs2_reserve_space(c, request, &length, - ALLOC_DELETION, JFFS2_SUMMARY_XREF_SIZE); - down_write(&c->xattr_sem); - if (rc) { - JFFS2_WARNING("jffs2_reserve_space()=%d, request=%u\n", rc, request); - delete_xattr_ref_delay(c, ref); - up_write(&c->xattr_sem); - return 0; - } - delete_xattr_ref(c, ref, 1); + delete_xattr_ref(c, ref); } out: up_write(&c->xattr_sem); @@ -1292,6 +1191,10 @@ int do_jffs2_setxattr(struct inode *inode, int xprefix, const char *xname, * is used to move xref into new node. * jffs2_verify_xattr(c) * is used to call do_verify_xattr_datum() before garbage collecting. + * jffs2_release_xattr_datum(c, xd) + * is used to release an in-memory object of xdatum. + * jffs2_release_xattr_ref(c, ref) + * is used to release an in-memory object of xref. * -------------------------------------------------- */ int jffs2_garbage_collect_xattr_datum(struct jffs2_sb_info *c, struct jffs2_xattr_datum *xd, struct jffs2_raw_node_ref *raw) @@ -1302,18 +1205,17 @@ int jffs2_garbage_collect_xattr_datum(struct jffs2_sb_info *c, struct jffs2_xatt down_write(&c->xattr_sem); if (xd->node != raw) goto out; - if (is_xattr_datum_dead(xd) && (raw->next_in_ino == (void *)xd)) + if (xd->flags & (JFFS2_XFLAGS_DEAD|JFFS2_XFLAGS_INVALID)) goto out; - old_ofs = ref_offset(xd->node); - totlen = ref_totlen(c, c->gcblock, xd->node); - - if (!is_xattr_datum_dead(xd)) { - rc = load_xattr_datum(c, xd); - if (unlikely(rc < 0)) - goto out; + rc = load_xattr_datum(c, xd); + if (unlikely(rc)) { + rc = (rc > 0) ? 0 : rc; + goto out; } - + old_ofs = ref_offset(xd->node); + totlen = PAD(sizeof(struct jffs2_raw_xattr) + + xd->name_len + 1 + xd->value_len); rc = jffs2_reserve_space_gc(c, totlen, &length, JFFS2_SUMMARY_XATTR_SIZE); if (rc) { JFFS2_WARNING("jffs2_reserve_space_gc()=%d, request=%u\n", rc, totlen); @@ -1331,7 +1233,6 @@ int jffs2_garbage_collect_xattr_datum(struct jffs2_sb_info *c, struct jffs2_xatt return rc; } - int jffs2_garbage_collect_xattr_ref(struct jffs2_sb_info *c, struct jffs2_xattr_ref *ref, struct jffs2_raw_node_ref *raw) { @@ -1392,7 +1293,7 @@ int jffs2_verify_xattr(struct jffs2_sb_info *c) raw->flash_offset = ref_offset(raw) | ((xd->node == (void *)raw) ? REF_PRISTINE : REF_NORMAL); } - if (is_xattr_datum_dead(xd)) + if (xd->flags & JFFS2_XFLAGS_DEAD) list_add(&xd->xindex, &c->xattr_dead_list); spin_unlock(&c->erase_completion_lock); } @@ -1403,7 +1304,7 @@ int jffs2_verify_xattr(struct jffs2_sb_info *c) void jffs2_release_xattr_datum(struct jffs2_sb_info *c, struct jffs2_xattr_datum *xd) { /* must be called under spin_lock(&c->erase_completion_lock) */ - if (xd->node != (void *)xd) + if (xd->refcnt > 0 || xd->node != (void *)xd) return; list_del(&xd->xindex); @@ -1421,8 +1322,8 @@ void jffs2_release_xattr_ref(struct jffs2_sb_info *c, struct jffs2_xattr_ref *re for (tmp=c->xref_dead_list, ptmp=&c->xref_dead_list; tmp; ptmp=&tmp->next, tmp=tmp->next) { if (ref == tmp) { *ptmp = tmp->next; - jffs2_free_xattr_ref(ref); break; } } + jffs2_free_xattr_ref(ref); } diff --git a/fs/jffs2/xattr.h b/fs/jffs2/xattr.h index 06ab7b880212..4a10abc6d917 100644 --- a/fs/jffs2/xattr.h +++ b/fs/jffs2/xattr.h @@ -16,6 +16,7 @@ #define JFFS2_XFLAGS_HOT (0x01) /* This datum is HOT */ #define JFFS2_XFLAGS_BIND (0x02) /* This datum is not reclaimed */ +#define JFFS2_XFLAGS_DEAD (0x40) /* This datum is already dead */ #define JFFS2_XFLAGS_INVALID (0x80) /* This datum contains crc error */ struct jffs2_xattr_datum @@ -60,34 +61,12 @@ struct jffs2_xattr_ref struct jffs2_xattr_ref *next; /* chained from ic->xref_list */ }; -#define XDATUM_DELETE_MARKER (0xffffffff) #define XREF_DELETE_MARKER (0x00000001) -static inline int is_xattr_datum_dead(struct jffs2_xattr_datum *xd) -{ - return (xd->version == XDATUM_DELETE_MARKER); -} - -static inline void set_xattr_datum_dead(struct jffs2_xattr_datum *xd) -{ - xd->version = XDATUM_DELETE_MARKER; -} - static inline int is_xattr_ref_dead(struct jffs2_xattr_ref *ref) { return ((ref->xseqno & XREF_DELETE_MARKER) != 0); } -static inline void set_xattr_ref_dead(struct jffs2_xattr_ref *ref) -{ - ref->xseqno |= XREF_DELETE_MARKER; -} - -static inline void clr_xattr_ref_dead(struct jffs2_xattr_ref *ref) -{ - ref->xseqno &= ~XREF_DELETE_MARKER; -} - - #ifdef CONFIG_JFFS2_FS_XATTR extern void jffs2_init_xattr_subsystem(struct jffs2_sb_info *c); From 355ed4e141203fd7266ef9d90d57be0c61bd1aa4 Mon Sep 17 00:00:00 2001 From: KaiGai Kohei Date: Sat, 24 Jun 2006 09:15:36 +0900 Subject: [PATCH 11/17] [JFFS2][XATTR] Fix memory leak with jffs2_xattr_ref If xattr_ref is associated with an orphan inode_cache on filesystem mounting, those xattr_refs are not released even if this inode_cache is released. This patch enables to call jffs2_xattr_delete_inode() for such a irregular inode_cachde too. Signed-off-by: KaiGai Kohei Signed-off-by: David Woodhouse --- fs/jffs2/fs.c | 2 -- fs/jffs2/gc.c | 1 + fs/jffs2/nodelist.c | 3 +++ fs/jffs2/readinode.c | 1 + 4 files changed, 5 insertions(+), 2 deletions(-) diff --git a/fs/jffs2/fs.c b/fs/jffs2/fs.c index 2900ec3ec3af..97caa77d60cf 100644 --- a/fs/jffs2/fs.c +++ b/fs/jffs2/fs.c @@ -227,8 +227,6 @@ void jffs2_clear_inode (struct inode *inode) struct jffs2_inode_info *f = JFFS2_INODE_INFO(inode); D1(printk(KERN_DEBUG "jffs2_clear_inode(): ino #%lu mode %o\n", inode->i_ino, inode->i_mode)); - - jffs2_xattr_delete_inode(c, f->inocache); jffs2_do_clear_inode(c, f); } diff --git a/fs/jffs2/gc.c b/fs/jffs2/gc.c index f59b147661c9..daff3341ff92 100644 --- a/fs/jffs2/gc.c +++ b/fs/jffs2/gc.c @@ -165,6 +165,7 @@ int jffs2_garbage_collect_pass(struct jffs2_sb_info *c) D1(printk(KERN_DEBUG "Skipping check of ino #%d with nlink zero\n", ic->ino)); spin_unlock(&c->inocache_lock); + jffs2_xattr_delete_inode(c, ic); continue; } switch(ic->state) { diff --git a/fs/jffs2/nodelist.c b/fs/jffs2/nodelist.c index 927dfe42ba76..7675b33396c7 100644 --- a/fs/jffs2/nodelist.c +++ b/fs/jffs2/nodelist.c @@ -906,6 +906,9 @@ void jffs2_del_ino_cache(struct jffs2_sb_info *c, struct jffs2_inode_cache *old) { struct jffs2_inode_cache **prev; +#ifdef CONFIG_JFFS2_FS_XATTR + BUG_ON(old->xref); +#endif dbg_inocache("del %p (ino #%u)\n", old, old->ino); spin_lock(&c->inocache_lock); diff --git a/fs/jffs2/readinode.c b/fs/jffs2/readinode.c index 5fec012b02ed..cc1899268c43 100644 --- a/fs/jffs2/readinode.c +++ b/fs/jffs2/readinode.c @@ -968,6 +968,7 @@ void jffs2_do_clear_inode(struct jffs2_sb_info *c, struct jffs2_inode_info *f) struct jffs2_full_dirent *fd, *fds; int deleted; + jffs2_xattr_delete_inode(c, f->inocache); down(&f->sem); deleted = f->inocache && !f->inocache->nlink; From 2c887e2359f6e7217cdaa17994ca94ef328b658f Mon Sep 17 00:00:00 2001 From: KaiGai Kohei Date: Sat, 24 Jun 2006 09:16:50 +0900 Subject: [PATCH 12/17] [JFFS2][XATTR] Re-define xd->refcnt as atomic_t In jffs2_release_xattr_datum(), it refers xd->refcnt to ensure whether releasing xd is allowed or not. But we can't hold xattr_sem since this function is called under spin_lock(&c->erase_completion_lock). Thus we have to refer it without any locking. This patch redefine xd->refcnt as atomic_t. It enables to refer xd->refcnt without any locking. Signed-off-by: KaiGai Kohei Signed-off-by: David Woodhouse --- fs/jffs2/xattr.c | 25 +++++++++++-------------- fs/jffs2/xattr.h | 2 +- 2 files changed, 12 insertions(+), 15 deletions(-) diff --git a/fs/jffs2/xattr.c b/fs/jffs2/xattr.c index 7622f79cb5b4..18e66dbf23b4 100644 --- a/fs/jffs2/xattr.c +++ b/fs/jffs2/xattr.c @@ -345,7 +345,7 @@ static struct jffs2_xattr_datum *create_xattr_datum(struct jffs2_sb_info *c, && xd->value_len==xsize && !strcmp(xd->xname, xname) && !memcmp(xd->xvalue, xvalue, xsize)) { - xd->refcnt++; + atomic_inc(&xd->refcnt); return xd; } } @@ -365,7 +365,7 @@ static struct jffs2_xattr_datum *create_xattr_datum(struct jffs2_sb_info *c, strcpy(data, xname); memcpy(data + name_len + 1, xvalue, xsize); - xd->refcnt = 1; + atomic_set(&xd->refcnt, 1); xd->xid = ++c->highest_xid; xd->flags |= JFFS2_XFLAGS_HOT; xd->xprefix = xprefix; @@ -397,7 +397,7 @@ static struct jffs2_xattr_datum *create_xattr_datum(struct jffs2_sb_info *c, static void delete_xattr_datum(struct jffs2_sb_info *c, struct jffs2_xattr_datum *xd) { /* must be called under down_write(xattr_sem) */ - BUG_ON(xd->refcnt); + BUG_ON(atomic_read(&xd->refcnt)); unload_xattr_datum(c, xd); xd->flags |= JFFS2_XFLAGS_DEAD; @@ -580,7 +580,7 @@ static void delete_xattr_ref(struct jffs2_sb_info *c, struct jffs2_xattr_ref *re dbg_xattr("xref(ino=%u, xid=%u, xseqno=%u) was removed.\n", ref->ino, ref->xid, ref->xseqno); - if (!--xd->refcnt) + if (atomic_dec_and_test(&xd->refcnt)) delete_xattr_datum(c, xd); } @@ -612,8 +612,7 @@ void jffs2_xattr_free_inode(struct jffs2_sb_info *c, struct jffs2_inode_cache *i for (ref = ic->xref; ref; ref = _ref) { _ref = ref->next; xd = ref->xd; - xd->refcnt--; - if (!xd->refcnt) { + if (atomic_dec_and_test(&xd->refcnt)) { unload_xattr_datum(c, xd); jffs2_free_xattr_datum(xd); } @@ -835,7 +834,7 @@ void jffs2_build_xattr_subsystem(struct jffs2_sb_info *c) } ref->xd = xd; ref->ic = ic; - xd->refcnt++; + atomic_inc(&xd->refcnt); ref->next = ic->xref; ic->xref = ref; } @@ -846,7 +845,7 @@ void jffs2_build_xattr_subsystem(struct jffs2_sb_info *c) list_for_each_entry_safe(xd, _xd, &c->xattrindex[i], xindex) { xdatum_count++; list_del_init(&xd->xindex); - if (!xd->refcnt) { + if (!atomic_read(&xd->refcnt)) { dbg_xattr("xdatum(xid=%u, version=%u) is orphan.\n", xd->xid, xd->version); xd->flags |= JFFS2_XFLAGS_DEAD; @@ -1120,7 +1119,7 @@ int do_jffs2_setxattr(struct inode *inode, int xprefix, const char *xname, ref->next = c->xref_dead_list; c->xref_dead_list = ref; spin_unlock(&c->erase_completion_lock); - if (!--xd->refcnt) + if (atomic_dec_and_test(&xd->refcnt)) delete_xattr_datum(c, xd); } else { ref->ic = ic; @@ -1157,8 +1156,7 @@ int do_jffs2_setxattr(struct inode *inode, int xprefix, const char *xname, down_write(&c->xattr_sem); if (rc) { JFFS2_WARNING("jffs2_reserve_space()=%d, request=%u\n", rc, request); - xd->refcnt--; - if (!xd->refcnt) + if (atomic_dec_and_test(&xd->refcnt)) delete_xattr_datum(c, xd); up_write(&c->xattr_sem); return rc; @@ -1172,8 +1170,7 @@ int do_jffs2_setxattr(struct inode *inode, int xprefix, const char *xname, ic->xref = ref; } rc = PTR_ERR(newref); - xd->refcnt--; - if (!xd->refcnt) + if (atomic_dec_and_test(&xd->refcnt)) delete_xattr_datum(c, xd); } else if (ref) { delete_xattr_ref(c, ref); @@ -1304,7 +1301,7 @@ int jffs2_verify_xattr(struct jffs2_sb_info *c) void jffs2_release_xattr_datum(struct jffs2_sb_info *c, struct jffs2_xattr_datum *xd) { /* must be called under spin_lock(&c->erase_completion_lock) */ - if (xd->refcnt > 0 || xd->node != (void *)xd) + if (atomic_read(&xd->refcnt) || xd->node != (void *)xd) return; list_del(&xd->xindex); diff --git a/fs/jffs2/xattr.h b/fs/jffs2/xattr.h index 4a10abc6d917..06a5c69dcf8b 100644 --- a/fs/jffs2/xattr.h +++ b/fs/jffs2/xattr.h @@ -28,7 +28,7 @@ struct jffs2_xattr_datum uint16_t xprefix; /* see JFFS2_XATTR_PREFIX_* */ struct list_head xindex; /* chained from c->xattrindex[n] */ - uint32_t refcnt; /* # of xattr_ref refers this */ + atomic_t refcnt; /* # of xattr_ref refers this */ uint32_t xid; uint32_t version; From 332a6b99c587161a972eaa1b00ae0e0dc49fbbfd Mon Sep 17 00:00:00 2001 From: KaiGai Kohei Date: Sat, 24 Jun 2006 09:17:42 +0900 Subject: [PATCH 13/17] [JFFS2][XATTR] Fix wrong copyright summary.c was modified at 2006. Signed-off-by: KaiGai Kohei Signed-off-by: David Woodhouse --- fs/jffs2/summary.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/jffs2/summary.c b/fs/jffs2/summary.c index c430f1d217e2..1deb92acd2bb 100644 --- a/fs/jffs2/summary.c +++ b/fs/jffs2/summary.c @@ -5,7 +5,7 @@ * Zoltan Sogor , * Patrik Kluba , * University of Szeged, Hungary - * 2005 KaiGai Kohei + * 2006 KaiGai Kohei * * For licensing information, see the file 'LICENCE' in this directory. * From 04510dee3c21ac208351cc6de7b70a5459ab3029 Mon Sep 17 00:00:00 2001 From: KaiGai Kohei Date: Sat, 24 Jun 2006 09:21:13 +0900 Subject: [PATCH 14/17] [JFFS2][XATTR] coexistence between xattr and write buffering support. Drop '&& !JFFS2_FS_WRITEBUFFER' from fs/Kconfig. The series of previous patches enables to use those functionality at same time. Signed-off-by: KaiGai Kohei Signed-off-by: David Woodhouse --- fs/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/Kconfig b/fs/Kconfig index 1cdc043922d5..ee5effac1ad5 100644 --- a/fs/Kconfig +++ b/fs/Kconfig @@ -1116,7 +1116,7 @@ config JFFS2_SUMMARY config JFFS2_FS_XATTR bool "JFFS2 XATTR support (EXPERIMENTAL)" - depends on JFFS2_FS && EXPERIMENTAL && !JFFS2_FS_WRITEBUFFER + depends on JFFS2_FS && EXPERIMENTAL default n help Extended attributes are name:value pairs associated with inodes by From 0e4ced59de7c0c23588d2b3f6d302592545cd12e Mon Sep 17 00:00:00 2001 From: Petr Stetiar Date: Fri, 23 Jun 2006 19:17:03 +0200 Subject: [PATCH 15/17] [MTD] NAND: Fix typo in mtd/nand/ts7250.c I was unable to compile ts7250.c after your refactor commit, it's a typo probably. -- ynezz From: Petr Stetiar Signed-off-by: Thomas Gleixner --- drivers/mtd/nand/ts7250.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/mtd/nand/ts7250.c b/drivers/mtd/nand/ts7250.c index a0b4b1edcb0d..f40081069ab2 100644 --- a/drivers/mtd/nand/ts7250.c +++ b/drivers/mtd/nand/ts7250.c @@ -97,7 +97,7 @@ static void ts7250_hwcontrol(struct mtd_info *mtd, int cmd, unsigned int ctrl) unsigned long addr = TS72XX_NAND_CONTROL_VIRT_BASE; unsigned char bits; - bits = (ctrl & NAND_CNE) << 2; + bits = (ctrl & NAND_NCE) << 2; bits |= ctrl & NAND_CLE; bits |= (ctrl & NAND_ALE) >> 2; From 1887f517e3cdf5f1e9c0e4daaa864450415a8f61 Mon Sep 17 00:00:00 2001 From: Herbert Valerio Riedel Date: Sat, 24 Jun 2006 00:03:36 +0200 Subject: [PATCH 16/17] [MTD] CORE mtdchar.c: fix off-by-one error in lseek() Allow lseek(mtdchar_fd, 0, SEEK_END) to succeed, which currently fails with EINVAL. lseek(fd, 0, SEEK_END) should result into the same fileposition as lseek(fd, 0, SEEK_SET) + read(fd, buf, length(fd)) Furthermore, lseek(fd, 0, SEEK_CUR) should return the current file position, which in case of an encountered EOF should not result in EINVAL Signed-off-by: Herbert Valerio Riedel Signed-off-by: Thomas Gleixner Signed-off-by: David Woodhouse --- drivers/mtd/mtdchar.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/mtd/mtdchar.c b/drivers/mtd/mtdchar.c index aa18d45b264b..9a4b59d92525 100644 --- a/drivers/mtd/mtdchar.c +++ b/drivers/mtd/mtdchar.c @@ -78,7 +78,7 @@ static loff_t mtd_lseek (struct file *file, loff_t offset, int orig) return -EINVAL; } - if (offset >= 0 && offset < mtd->size) + if (offset >= 0 && offset <= mtd->size) return file->f_pos = offset; return -EINVAL; From 6a93096195305f6f2a39544a034e77e2e74d5799 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Wed, 28 Jun 2006 00:11:45 +0200 Subject: [PATCH 17/17] [MTD] NAND: Select chip before checking write protect status The other way round works not really well with boards which have a static NAND chipselect. Signed-off-by: Thomas Gleixner Signed-off-by: David Woodhouse --- drivers/mtd/nand/nand_base.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c index 8df184f6d8d1..80a76654d963 100644 --- a/drivers/mtd/nand/nand_base.c +++ b/drivers/mtd/nand/nand_base.c @@ -1610,13 +1610,13 @@ static int nand_do_write_ops(struct mtd_info *mtd, loff_t to, if (!writelen) return 0; + chipnr = (int)(to >> chip->chip_shift); + chip->select_chip(mtd, chipnr); + /* Check, if it is write protected */ if (nand_check_wp(mtd)) return -EIO; - chipnr = (int)(to >> chip->chip_shift); - chip->select_chip(mtd, chipnr); - realpage = (int)(to >> chip->page_shift); page = realpage & chip->pagemask; blockmask = (1 << (chip->phys_erase_shift - chip->page_shift)) - 1;