Merge git://git.infradead.org/mtd-2.6

* git://git.infradead.org/mtd-2.6:
  [MTD][NOR] Add physical address to point() method
  [JFFS2] Track parent inode for directories (for NFS export)
  [JFFS2] Invert last argument of jffs2_gc_fetch_inode(), make it boolean.
  [JFFS2] Quiet lockdep false positive.
  [JFFS2] Clean up jffs2_alloc_inode() and jffs2_i_init_once()
  [MTD] Delete long-unused jedec.h header file.
  [MTD] [NAND] at91_nand: use at91_nand_{en,dis}able consistently.

drivers/mtd/chips/cfi_cmdset_0001.c

@@ -82,9 +82,8 @@ static struct mtd_info *cfi_intelext_setup (struct mtd_info *);
 static int cfi_intelext_partition_fixup(struct mtd_info *, struct cfi_private **);
 
 static int cfi_intelext_point (struct mtd_info *mtd, loff_t from, size_t len,
-		     size_t *retlen, u_char **mtdbuf);
-static void cfi_intelext_unpoint (struct mtd_info *mtd, u_char *addr, loff_t from,
-			size_t len);
+		     size_t *retlen, void **virt, resource_size_t *phys);
+static void cfi_intelext_unpoint(struct mtd_info *mtd, loff_t from, size_t len);
 
 static int chip_ready (struct map_info *map, struct flchip *chip, unsigned long adr, int mode);
 static int get_chip(struct map_info *map, struct flchip *chip, unsigned long adr, int mode);
@@ -1240,7 +1239,8 @@ static int do_point_onechip (struct map_info *map, struct flchip *chip, loff_t a
 	return ret;
 }
 
-static int cfi_intelext_point (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char **mtdbuf)
+static int cfi_intelext_point(struct mtd_info *mtd, loff_t from, size_t len,
+		size_t *retlen, void **virt, resource_size_t *phys)
 {
 	struct map_info *map = mtd->priv;
 	struct cfi_private *cfi = map->fldrv_priv;
@@ -1257,8 +1257,10 @@ static int cfi_intelext_point (struct mtd_info *mtd, loff_t from, size_t len, si
 	chipnum = (from >> cfi->chipshift);
 	ofs = from - (chipnum << cfi->chipshift);
 
-	*mtdbuf = (void *)map->virt + cfi->chips[chipnum].start + ofs;
+	*virt = map->virt + cfi->chips[chipnum].start + ofs;
 	*retlen = 0;
+	if (phys)
+		*phys = map->phys + cfi->chips[chipnum].start + ofs;
 
 	while (len) {
 		unsigned long thislen;
@@ -1291,7 +1293,7 @@ static int cfi_intelext_point (struct mtd_info *mtd, loff_t from, size_t len, si
 	return 0;
 }
 
-static void cfi_intelext_unpoint (struct mtd_info *mtd, u_char *addr, loff_t from, size_t len)
+static void cfi_intelext_unpoint(struct mtd_info *mtd, loff_t from, size_t len)
 {
 	struct map_info *map = mtd->priv;
 	struct cfi_private *cfi = map->fldrv_priv;

drivers/mtd/devices/mtdram.c

@@ -48,18 +48,21 @@ static int ram_erase(struct mtd_info *mtd, struct erase_info *instr)
 }
 
 static int ram_point(struct mtd_info *mtd, loff_t from, size_t len,
-		size_t *retlen, u_char **mtdbuf)
+		size_t *retlen, void **virt, resource_size_t *phys)
 {
 	if (from + len > mtd->size)
 		return -EINVAL;
 
-	*mtdbuf = mtd->priv + from;
+	/* can we return a physical address with this driver? */
+	if (phys)
+		return -EINVAL;
+
+	*virt = mtd->priv + from;
 	*retlen = len;
 	return 0;
 }
 
-static void ram_unpoint(struct mtd_info *mtd, u_char * addr, loff_t from,
-		size_t len)
+static void ram_unpoint(struct mtd_info *mtd, loff_t from, size_t len)
 {
 }
 

drivers/mtd/devices/phram.c

@@ -57,20 +57,21 @@ static int phram_erase(struct mtd_info *mtd, struct erase_info *instr)
 }
 
 static int phram_point(struct mtd_info *mtd, loff_t from, size_t len,
-		size_t *retlen, u_char **mtdbuf)
+		size_t *retlen, void **virt, resource_size_t *phys)
 {
-	u_char *start = mtd->priv;
-
 	if (from + len > mtd->size)
 		return -EINVAL;
 
-	*mtdbuf = start + from;
+	/* can we return a physical address with this driver? */
+	if (phys)
+		return -EINVAL;
+
+	*virt = mtd->priv + from;
 	*retlen = len;
 	return 0;
 }
 
-static void phram_unpoint(struct mtd_info *mtd, u_char *addr, loff_t from,
-		size_t len)
+static void phram_unpoint(struct mtd_info *mtd, loff_t from, size_t len)
 {
 }
 

drivers/mtd/devices/pmc551.c

@@ -134,7 +134,8 @@ static int pmc551_erase(struct mtd_info *mtd, struct erase_info *instr)
 	eoff_lo = end & (priv->asize - 1);
 	soff_lo = instr->addr & (priv->asize - 1);
 
-	pmc551_point(mtd, instr->addr, instr->len, &retlen, &ptr);
+	pmc551_point(mtd, instr->addr, instr->len, &retlen,
+		     (void **)&ptr, NULL);
 
 	if (soff_hi == eoff_hi || mtd->size == priv->asize) {
 		/* The whole thing fits within one access, so just one shot
@@ -154,7 +155,8 @@ static int pmc551_erase(struct mtd_info *mtd, struct erase_info *instr)
 			}
 			soff_hi += priv->asize;
 			pmc551_point(mtd, (priv->base_map0 | soff_hi),
-				     priv->asize, &retlen, &ptr);
+				     priv->asize, &retlen,
+				     (void **)&ptr, NULL);
 		}
 		memset(ptr, 0xff, eoff_lo);
 	}
@@ -170,7 +172,7 @@ static int pmc551_erase(struct mtd_info *mtd, struct erase_info *instr)
 }
 
 static int pmc551_point(struct mtd_info *mtd, loff_t from, size_t len,
-			size_t * retlen, u_char ** mtdbuf)
+			size_t *retlen, void **virt, resource_size_t *phys)
 {
 	struct mypriv *priv = mtd->priv;
 	u32 soff_hi;
@@ -188,6 +190,10 @@ static int pmc551_point(struct mtd_info *mtd, loff_t from, size_t len,
 		return -EINVAL;
 	}
 
+	/* can we return a physical address with this driver? */
+	if (phys)
+		return -EINVAL;
+
 	soff_hi = from & ~(priv->asize - 1);
 	soff_lo = from & (priv->asize - 1);
 
@@ -198,13 +204,12 @@ static int pmc551_point(struct mtd_info *mtd, loff_t from, size_t len,
 		priv->curr_map0 = soff_hi;
 	}
 
-	*mtdbuf = priv->start + soff_lo;
+	*virt = priv->start + soff_lo;
 	*retlen = len;
 	return 0;
 }
 
-static void pmc551_unpoint(struct mtd_info *mtd, u_char * addr, loff_t from,
-			   size_t len)
+static void pmc551_unpoint(struct mtd_info *mtd, loff_t from, size_t len)
 {
 #ifdef CONFIG_MTD_PMC551_DEBUG
 	printk(KERN_DEBUG "pmc551_unpoint()\n");
@@ -242,7 +247,7 @@ static int pmc551_read(struct mtd_info *mtd, loff_t from, size_t len,
 	soff_lo = from & (priv->asize - 1);
 	eoff_lo = end & (priv->asize - 1);
 
-	pmc551_point(mtd, from, len, retlen, &ptr);
+	pmc551_point(mtd, from, len, retlen, (void **)&ptr, NULL);
 
 	if (soff_hi == eoff_hi) {
 		/* The whole thing fits within one access, so just one shot
@@ -263,7 +268,8 @@ static int pmc551_read(struct mtd_info *mtd, loff_t from, size_t len,
 				goto out;
 			}
 			soff_hi += priv->asize;
-			pmc551_point(mtd, soff_hi, priv->asize, retlen, &ptr);
+			pmc551_point(mtd, soff_hi, priv->asize, retlen,
+				     (void **)&ptr, NULL);
 		}
 		memcpy(copyto, ptr, eoff_lo);
 		copyto += eoff_lo;
@@ -308,7 +314,7 @@ static int pmc551_write(struct mtd_info *mtd, loff_t to, size_t len,
 	soff_lo = to & (priv->asize - 1);
 	eoff_lo = end & (priv->asize - 1);
 
-	pmc551_point(mtd, to, len, retlen, &ptr);
+	pmc551_point(mtd, to, len, retlen, (void **)&ptr, NULL);
 
 	if (soff_hi == eoff_hi) {
 		/* The whole thing fits within one access, so just one shot
@@ -329,7 +335,8 @@ static int pmc551_write(struct mtd_info *mtd, loff_t to, size_t len,
 				goto out;
 			}
 			soff_hi += priv->asize;
-			pmc551_point(mtd, soff_hi, priv->asize, retlen, &ptr);
+			pmc551_point(mtd, soff_hi, priv->asize, retlen,
+				     (void **)&ptr, NULL);
 		}
 		memcpy(ptr, copyfrom, eoff_lo);
 		copyfrom += eoff_lo;

drivers/mtd/devices/slram.c

@@ -76,8 +76,9 @@ static char *map;
 static slram_mtd_list_t *slram_mtdlist = NULL;
 
 static int slram_erase(struct mtd_info *, struct erase_info *);
-static int slram_point(struct mtd_info *, loff_t, size_t, size_t *, u_char **);
-static void slram_unpoint(struct mtd_info *, u_char *, loff_t,	size_t);
+static int slram_point(struct mtd_info *, loff_t, size_t, size_t *, void **,
+		resource_size_t *);
+static void slram_unpoint(struct mtd_info *, loff_t, size_t);
 static int slram_read(struct mtd_info *, loff_t, size_t, size_t *, u_char *);
 static int slram_write(struct mtd_info *, loff_t, size_t, size_t *, const u_char *);
 
@@ -104,19 +105,23 @@ static int slram_erase(struct mtd_info *mtd, struct erase_info *instr)
 }
 
 static int slram_point(struct mtd_info *mtd, loff_t from, size_t len,
-		size_t *retlen, u_char **mtdbuf)
+		size_t *retlen, void **virt, resource_size_t *phys)
 {
 	slram_priv_t *priv = mtd->priv;
 
+	/* can we return a physical address with this driver? */
+	if (phys)
+		return -EINVAL;
+
 	if (from + len > mtd->size)
 		return -EINVAL;
 
-	*mtdbuf = priv->start + from;
+	*virt = priv->start + from;
 	*retlen = len;
 	return(0);
 }
 
-static void slram_unpoint(struct mtd_info *mtd, u_char *addr, loff_t from, size_t len)
+static void slram_unpoint(struct mtd_info *mtd, loff_t from, size_t len)
 {
 }
 

drivers/mtd/maps/uclinux.c

@@ -40,10 +40,12 @@ struct mtd_partition uclinux_romfs[] = {
 /****************************************************************************/
 
 int uclinux_point(struct mtd_info *mtd, loff_t from, size_t len,
-	size_t *retlen, u_char **mtdbuf)
+	size_t *retlen, void **virt, resource_size_t *phys)
 {
 	struct map_info *map = mtd->priv;
-	*mtdbuf = (u_char *) (map->virt + ((int) from));
+	*virt = map->virt + from;
+	if (phys)
+		*phys = map->phys + from;
 	*retlen = len;
 	return(0);
 }

drivers/mtd/mtdpart.c

@@ -68,7 +68,7 @@ static int part_read (struct mtd_info *mtd, loff_t from, size_t len,
 }
 
 static int part_point (struct mtd_info *mtd, loff_t from, size_t len,
-			size_t *retlen, u_char **buf)
+			size_t *retlen, void **virt, resource_size_t *phys)
 {
 	struct mtd_part *part = PART(mtd);
 	if (from >= mtd->size)
@@ -76,14 +76,14 @@ static int part_point (struct mtd_info *mtd, loff_t from, size_t len,
 	else if (from + len > mtd->size)
 		len = mtd->size - from;
 	return part->master->point (part->master, from + part->offset,
-				    len, retlen, buf);
+				    len, retlen, virt, phys);
 }
 
-static void part_unpoint (struct mtd_info *mtd, u_char *addr, loff_t from, size_t len)
+static void part_unpoint(struct mtd_info *mtd, loff_t from, size_t len)
 {
 	struct mtd_part *part = PART(mtd);
 
-	part->master->unpoint (part->master, addr, from + part->offset, len);
+	part->master->unpoint(part->master, from + part->offset, len);
 }
 
 static int part_read_oob(struct mtd_info *mtd, loff_t from,

drivers/mtd/nand/at91_nand.c

@@ -93,6 +93,24 @@ struct at91_nand_host {
 	void __iomem		*ecc;
 };
 
+/*
+ * Enable NAND.
+ */
+static void at91_nand_enable(struct at91_nand_host *host)
+{
+	if (host->board->enable_pin)
+		at91_set_gpio_value(host->board->enable_pin, 0);
+}
+
+/*
+ * Disable NAND.
+ */
+static void at91_nand_disable(struct at91_nand_host *host)
+{
+	if (host->board->enable_pin)
+		at91_set_gpio_value(host->board->enable_pin, 1);
+}
+
 /*
  * Hardware specific access to control-lines
  */
@@ -101,11 +119,11 @@ static void at91_nand_cmd_ctrl(struct mtd_info *mtd, int cmd, unsigned int ctrl)
 	struct nand_chip *nand_chip = mtd->priv;
 	struct at91_nand_host *host = nand_chip->priv;
 
-	if (host->board->enable_pin && (ctrl & NAND_CTRL_CHANGE)) {
+	if (ctrl & NAND_CTRL_CHANGE) {
 		if (ctrl & NAND_NCE)
-			at91_set_gpio_value(host->board->enable_pin, 0);
+			at91_nand_enable(host);
 		else
-			at91_set_gpio_value(host->board->enable_pin, 1);
+			at91_nand_disable(host);
 	}
 	if (cmd == NAND_CMD_NONE)
 		return;
@@ -127,24 +145,6 @@ static int at91_nand_device_ready(struct mtd_info *mtd)
 	return at91_get_gpio_value(host->board->rdy_pin);
 }
 
-/*
- * Enable NAND.
- */
-static void at91_nand_enable(struct at91_nand_host *host)
-{
-	if (host->board->enable_pin)
-		at91_set_gpio_value(host->board->enable_pin, 0);
-}
-
-/*
- * Disable NAND.
- */
-static void at91_nand_disable(struct at91_nand_host *host)
-{
-	if (host->board->enable_pin)
-		at91_set_gpio_value(host->board->enable_pin, 1);
-}
-
 /*
  * write oob for small pages
  */

fs/jffs2/build.c

@@ -68,11 +68,17 @@ static void jffs2_build_inode_pass1(struct jffs2_sb_info *c,
 			continue;
 		}
 
-		if (child_ic->nlink++ && fd->type == DT_DIR) {
+		if (fd->type == DT_DIR) {
+			if (child_ic->pino_nlink) {
 				JFFS2_ERROR("child dir \"%s\" (ino #%u) of dir ino #%u appears to be a hard link\n",
 					    fd->name, fd->ino, ic->ino);
 				/* TODO: What do we do about it? */
+			} else {
+				child_ic->pino_nlink = ic->ino;
 			}
+		} else
+			child_ic->pino_nlink++;
+
 		dbg_fsbuild("increased nlink for child \"%s\" (ino #%u)\n", fd->name, fd->ino);
 		/* Can't free scan_dents so far. We might need them in pass 2 */
 	}
@@ -125,7 +131,7 @@ static int jffs2_build_filesystem(struct jffs2_sb_info *c)
 	dbg_fsbuild("pass 2 starting\n");
 
 	for_each_inode(i, c, ic) {
-		if (ic->nlink)
+		if (ic->pino_nlink)
 			continue;
 
 		jffs2_build_remove_unlinked_inode(c, ic, &dead_fds);
@@ -232,16 +238,19 @@ static void jffs2_build_remove_unlinked_inode(struct jffs2_sb_info *c,
 			/* Reduce nlink of the child. If it's now zero, stick it on the
 			   dead_fds list to be cleaned up later. Else just free the fd */
 
-			child_ic->nlink--;
+			if (fd->type == DT_DIR)
+				child_ic->pino_nlink = 0;
+			else
+				child_ic->pino_nlink--;
 
-			if (!child_ic->nlink) {
-				dbg_fsbuild("inode #%u (\"%s\") has now got zero nlink, adding to dead_fds list.\n",
+			if (!child_ic->pino_nlink) {
+				dbg_fsbuild("inode #%u (\"%s\") now has no links; adding to dead_fds list.\n",
 					  fd->ino, fd->name);
 				fd->next = *dead_fds;
 				*dead_fds = fd;
 			} else {
 				dbg_fsbuild("inode #%u (\"%s\") has now got nlink %d. Ignoring.\n",
-					  fd->ino, fd->name, child_ic->nlink);
+					  fd->ino, fd->name, child_ic->pino_nlink);
 				jffs2_free_full_dirent(fd);
 			}
 		}

fs/jffs2/dir.c

@@ -208,6 +208,13 @@ static int jffs2_create(struct inode *dir_i, struct dentry *dentry, int mode,
 	f = JFFS2_INODE_INFO(inode);
 	dir_f = JFFS2_INODE_INFO(dir_i);
 
+	/* jffs2_do_create() will want to lock it, _after_ reserving
+	   space and taking c-alloc_sem. If we keep it locked here,
+	   lockdep gets unhappy (although it's a false positive;
+	   nothing else will be looking at this inode yet so there's
+	   no chance of AB-BA deadlock involving its f->sem). */
+	mutex_unlock(&f->sem);
+
 	ret = jffs2_do_create(c, dir_f, f, ri,
 			      dentry->d_name.name, dentry->d_name.len);
 	if (ret)
@@ -219,7 +226,8 @@ static int jffs2_create(struct inode *dir_i, struct dentry *dentry, int mode,
 	d_instantiate(dentry, inode);
 
 	D1(printk(KERN_DEBUG "jffs2_create: Created ino #%lu with mode %o, nlink %d(%d). nrpages %ld\n",
-		  inode->i_ino, inode->i_mode, inode->i_nlink, f->inocache->nlink, inode->i_mapping->nrpages));
+		  inode->i_ino, inode->i_mode, inode->i_nlink,
+		  f->inocache->pino_nlink, inode->i_mapping->nrpages));
 	return 0;
 
  fail:
@@ -243,7 +251,7 @@ static int jffs2_unlink(struct inode *dir_i, struct dentry *dentry)
 	ret = jffs2_do_unlink(c, dir_f, dentry->d_name.name,
 			      dentry->d_name.len, dead_f, now);
 	if (dead_f->inocache)
-		dentry->d_inode->i_nlink = dead_f->inocache->nlink;
+		dentry->d_inode->i_nlink = dead_f->inocache->pino_nlink;
 	if (!ret)
 		dir_i->i_mtime = dir_i->i_ctime = ITIME(now);
 	return ret;
@@ -276,7 +284,7 @@ static int jffs2_link (struct dentry *old_dentry, struct inode *dir_i, struct de
 
 	if (!ret) {
 		mutex_lock(&f->sem);
-		old_dentry->d_inode->i_nlink = ++f->inocache->nlink;
+		old_dentry->d_inode->i_nlink = ++f->inocache->pino_nlink;
 		mutex_unlock(&f->sem);
 		d_instantiate(dentry, old_dentry->d_inode);
 		dir_i->i_mtime = dir_i->i_ctime = ITIME(now);
@@ -493,11 +501,14 @@ static int jffs2_mkdir (struct inode *dir_i, struct dentry *dentry, int mode)
 
 	inode->i_op = &jffs2_dir_inode_operations;
 	inode->i_fop = &jffs2_dir_operations;
-	/* Directories get nlink 2 at start */
-	inode->i_nlink = 2;
 
 	f = JFFS2_INODE_INFO(inode);
 
+	/* Directories get nlink 2 at start */
+	inode->i_nlink = 2;
+	/* but ic->pino_nlink is the parent ino# */
+	f->inocache->pino_nlink = dir_i->i_ino;
+
 	ri->data_crc = cpu_to_je32(0);
 	ri->node_crc = cpu_to_je32(crc32(0, ri, sizeof(*ri)-8));
 
@@ -594,17 +605,25 @@ static int jffs2_mkdir (struct inode *dir_i, struct dentry *dentry, int mode)
 
 static int jffs2_rmdir (struct inode *dir_i, struct dentry *dentry)
 {
+	struct jffs2_sb_info *c = JFFS2_SB_INFO(dir_i->i_sb);
+	struct jffs2_inode_info *dir_f = JFFS2_INODE_INFO(dir_i);
 	struct jffs2_inode_info *f = JFFS2_INODE_INFO(dentry->d_inode);
 	struct jffs2_full_dirent *fd;
 	int ret;
+	uint32_t now = get_seconds();
 
 	for (fd = f->dents ; fd; fd = fd->next) {
 		if (fd->ino)
 			return -ENOTEMPTY;
 	}
-	ret = jffs2_unlink(dir_i, dentry);
-	if (!ret)
+
+	ret = jffs2_do_unlink(c, dir_f, dentry->d_name.name,
+			      dentry->d_name.len, f, now);
+	if (!ret) {
+		dir_i->i_mtime = dir_i->i_ctime = ITIME(now);
+		clear_nlink(dentry->d_inode);
 		drop_nlink(dir_i);
+	}
 	return ret;
 }
 
@@ -817,7 +836,10 @@ static int jffs2_rename (struct inode *old_dir_i, struct dentry *old_dentry,
 		   inode which didn't exist. */
 		if (victim_f->inocache) {
 			mutex_lock(&victim_f->sem);
-			victim_f->inocache->nlink--;
+			if (S_ISDIR(new_dentry->d_inode->i_mode))
+				victim_f->inocache->pino_nlink = 0;
+			else
+				victim_f->inocache->pino_nlink--;
 			mutex_unlock(&victim_f->sem);
 		}
 	}
@@ -838,8 +860,8 @@ static int jffs2_rename (struct inode *old_dir_i, struct dentry *old_dentry,
 		struct jffs2_inode_info *f = JFFS2_INODE_INFO(old_dentry->d_inode);
 		mutex_lock(&f->sem);
 		inc_nlink(old_dentry->d_inode);
-		if (f->inocache)
-			f->inocache->nlink++;
+		if (f->inocache && !S_ISDIR(old_dentry->d_inode->i_mode))
+			f->inocache->pino_nlink++;
 		mutex_unlock(&f->sem);
 
 		printk(KERN_NOTICE "jffs2_rename(): Link succeeded, unlink failed (err %d). You now have a hard link\n", ret);

fs/jffs2/erase.c

@@ -294,7 +294,7 @@ static inline void jffs2_remove_node_refs_from_ino_list(struct jffs2_sb_info *c,
 			break;
 #endif
 		default:
-			if (ic->nodes == (void *)ic && ic->nlink == 0)
+			if (ic->nodes == (void *)ic && ic->pino_nlink == 0)
 				jffs2_del_ino_cache(c, ic);
 	}
 }
@@ -332,7 +332,8 @@ static int jffs2_block_check_erase(struct jffs2_sb_info *c, struct jffs2_erasebl
 	if (c->mtd->point) {
 		unsigned long *wordebuf;
 
-		ret = c->mtd->point(c->mtd, jeb->offset, c->sector_size, &retlen, (unsigned char **)&ebuf);
+		ret = c->mtd->point(c->mtd, jeb->offset, c->sector_size,
+				    &retlen, &ebuf, NULL);
 		if (ret) {
 			D1(printk(KERN_DEBUG "MTD point failed %d\n", ret));
 			goto do_flash_read;
@@ -340,7 +341,7 @@ static int jffs2_block_check_erase(struct jffs2_sb_info *c, struct jffs2_erasebl
 		if (retlen < c->sector_size) {
 			/* Don't muck about if it won't let us point to the whole erase sector */
 			D1(printk(KERN_DEBUG "MTD point returned len too short: 0x%zx\n", retlen));
-			c->mtd->unpoint(c->mtd, ebuf, jeb->offset, retlen);
+			c->mtd->unpoint(c->mtd, jeb->offset, retlen);
 			goto do_flash_read;
 		}
 		wordebuf = ebuf-sizeof(*wordebuf);
@@ -349,7 +350,7 @@ static int jffs2_block_check_erase(struct jffs2_sb_info *c, struct jffs2_erasebl
 		   if (*++wordebuf != ~0)
 			   break;
 		} while(--retlen);
-		c->mtd->unpoint(c->mtd, ebuf, jeb->offset, c->sector_size);
+		c->mtd->unpoint(c->mtd, jeb->offset, c->sector_size);
 		if (retlen) {
 			printk(KERN_WARNING "Newly-erased block contained word 0x%lx at offset 0x%08tx\n",
 			       *wordebuf, jeb->offset + c->sector_size-retlen*sizeof(*wordebuf));

fs/jffs2/fs.c

@@ -273,7 +273,7 @@ struct inode *jffs2_iget(struct super_block *sb, unsigned long ino)
 	inode->i_mtime = ITIME(je32_to_cpu(latest_node.mtime));
 	inode->i_ctime = ITIME(je32_to_cpu(latest_node.ctime));
 
-	inode->i_nlink = f->inocache->nlink;
+	inode->i_nlink = f->inocache->pino_nlink;
 
 	inode->i_blocks = (inode->i_size + 511) >> 9;
 
@@ -286,13 +286,12 @@ struct inode *jffs2_iget(struct super_block *sb, unsigned long ino)
 	case S_IFDIR:
 	{
 		struct jffs2_full_dirent *fd;
+		inode->i_nlink = 2; /* parent and '.' */
 
 		for (fd=f->dents; fd; fd = fd->next) {
 			if (fd->type == DT_DIR && fd->ino)
 				inc_nlink(inode);
 		}
-		/* and '..' */
-		inc_nlink(inode);
 		/* Root dir gets i_nlink 3 for some reason */
 		if (inode->i_ino == 1)
 			inc_nlink(inode);
@@ -586,11 +585,12 @@ void jffs2_gc_release_inode(struct jffs2_sb_info *c,
 }
 
 struct jffs2_inode_info *jffs2_gc_fetch_inode(struct jffs2_sb_info *c,
-						     int inum, int nlink)
+					      int inum, int unlinked)
 {
 	struct inode *inode;
 	struct jffs2_inode_cache *ic;
-	if (!nlink) {
+
+	if (unlinked) {
 		/* The inode has zero nlink but its nodes weren't yet marked
 		   obsolete. This has to be because we're still waiting for
 		   the final (close() and) iput() to happen.
@@ -638,8 +638,8 @@ struct jffs2_inode_info *jffs2_gc_fetch_inode(struct jffs2_sb_info *c,
 			return ERR_CAST(inode);
 	}
 	if (is_bad_inode(inode)) {
-		printk(KERN_NOTICE "Eep. read_inode() failed for ino #%u. nlink %d\n",
-		       inum, nlink);
+		printk(KERN_NOTICE "Eep. read_inode() failed for ino #%u. unlinked %d\n",
+		       inum, unlinked);
 		/* NB. This will happen again. We need to do something appropriate here. */
 		iput(inode);
 		return ERR_PTR(-EIO);

fs/jffs2/gc.c

@@ -161,8 +161,8 @@ int jffs2_garbage_collect_pass(struct jffs2_sb_info *c)
 			continue;
 		}
 
-		if (!ic->nlink) {
-			D1(printk(KERN_DEBUG "Skipping check of ino #%d with nlink zero\n",
+		if (!ic->pino_nlink) {
+			D1(printk(KERN_DEBUG "Skipping check of ino #%d with nlink/pino zero\n",
 				  ic->ino));
 			spin_unlock(&c->inocache_lock);
 			jffs2_xattr_delete_inode(c, ic);
@@ -398,10 +398,10 @@ int jffs2_garbage_collect_pass(struct jffs2_sb_info *c)
 	   it's vaguely possible. */
 
 	inum = ic->ino;
-	nlink = ic->nlink;
+	nlink = ic->pino_nlink;
 	spin_unlock(&c->inocache_lock);
 
-	f = jffs2_gc_fetch_inode(c, inum, nlink);
+	f = jffs2_gc_fetch_inode(c, inum, !nlink);
 	if (IS_ERR(f)) {
 		ret = PTR_ERR(f);
 		goto release_sem;

fs/jffs2/nodelist.h

@@ -177,7 +177,10 @@ struct jffs2_inode_cache {
 #ifdef CONFIG_JFFS2_FS_XATTR
 	struct jffs2_xattr_ref *xref;
 #endif
-	int nlink;
+	uint32_t pino_nlink;	/* Directories store parent inode
+				   here; other inodes store nlink.
+				   Zero always means that it's
+				   completely unlinked. */
 };
 
 /* Inode states for 'state' above. We need the 'GC' state to prevent

fs/jffs2/nodemgmt.c

@@ -709,7 +709,7 @@ void jffs2_mark_node_obsolete(struct jffs2_sb_info *c, struct jffs2_raw_node_ref
 				break;
 #endif
 			default:
-				if (ic->nodes == (void *)ic && ic->nlink == 0)
+				if (ic->nodes == (void *)ic && ic->pino_nlink == 0)
 					jffs2_del_ino_cache(c, ic);
 				break;
 		}

fs/jffs2/os-linux.h

@@ -187,7 +187,7 @@ int jffs2_do_fill_super(struct super_block *sb, void *data, int silent);
 void jffs2_gc_release_inode(struct jffs2_sb_info *c,
 			    struct jffs2_inode_info *f);
 struct jffs2_inode_info *jffs2_gc_fetch_inode(struct jffs2_sb_info *c,
-					      int inum, int nlink);
+					      int inum, int unlinked);
 
 unsigned char *jffs2_gc_fetch_page(struct jffs2_sb_info *c,
 				   struct jffs2_inode_info *f,

fs/jffs2/readinode.c

@@ -63,10 +63,11 @@ static int check_node_data(struct jffs2_sb_info *c, struct jffs2_tmp_dnode_info
 	/* TODO: instead, incapsulate point() stuff to jffs2_flash_read(),
 	 * adding and jffs2_flash_read_end() interface. */
 	if (c->mtd->point) {
-		err = c->mtd->point(c->mtd, ofs, len, &retlen, &buffer);
+		err = c->mtd->point(c->mtd, ofs, len, &retlen,
+				    (void **)&buffer, NULL);
 		if (!err && retlen < len) {
 			JFFS2_WARNING("MTD point returned len too short: %zu instead of %u.\n", retlen, tn->csize);
-			c->mtd->unpoint(c->mtd, buffer, ofs, retlen);
+			c->mtd->unpoint(c->mtd, ofs, retlen);
 		} else if (err)
 			JFFS2_WARNING("MTD point failed: error code %d.\n", err);
 		else
@@ -100,7 +101,7 @@ static int check_node_data(struct jffs2_sb_info *c, struct jffs2_tmp_dnode_info
 		kfree(buffer);
 #ifndef __ECOS
 	else
-		c->mtd->unpoint(c->mtd, buffer, ofs, len);
+		c->mtd->unpoint(c->mtd, ofs, len);
 #endif
 
 	if (crc != tn->data_crc) {
@@ -136,7 +137,7 @@ static int check_node_data(struct jffs2_sb_info *c, struct jffs2_tmp_dnode_info
 		kfree(buffer);
 #ifndef __ECOS
 	else
-		c->mtd->unpoint(c->mtd, buffer, ofs, len);
+		c->mtd->unpoint(c->mtd, ofs, len);
 #endif
 	return err;
 }
@@ -1123,7 +1124,8 @@ static int jffs2_do_read_inode_internal(struct jffs2_sb_info *c,
 	size_t retlen;
 	int ret;
 
-	dbg_readinode("ino #%u nlink is %d\n", f->inocache->ino, f->inocache->nlink);
+	dbg_readinode("ino #%u pino/nlink is %d\n", f->inocache->ino,
+		      f->inocache->pino_nlink);
 
 	memset(&rii, 0, sizeof(rii));
 
@@ -1358,7 +1360,7 @@ int jffs2_do_read_inode(struct jffs2_sb_info *c, struct jffs2_inode_info *f,
 		}
 		dbg_readinode("creating inocache for root inode\n");
 		memset(f->inocache, 0, sizeof(struct jffs2_inode_cache));
-		f->inocache->ino = f->inocache->nlink = 1;
+		f->inocache->ino = f->inocache->pino_nlink = 1;
 		f->inocache->nodes = (struct jffs2_raw_node_ref *)f->inocache;
 		f->inocache->state = INO_STATE_READING;
 		jffs2_add_ino_cache(c, f->inocache);
@@ -1401,7 +1403,7 @@ void jffs2_do_clear_inode(struct jffs2_sb_info *c, struct jffs2_inode_info *f)
 	jffs2_clear_acl(f);
 	jffs2_xattr_delete_inode(c, f->inocache);
 	mutex_lock(&f->sem);
-	deleted = f->inocache && !f->inocache->nlink;
+	deleted = f->inocache && !f->inocache->pino_nlink;
 
 	if (f->inocache && f->inocache->state != INO_STATE_CHECKING)
 		jffs2_set_inocache_state(c, f->inocache, INO_STATE_CLEARING);

fs/jffs2/scan.c

@@ -97,11 +97,12 @@ int jffs2_scan_medium(struct jffs2_sb_info *c)
 	size_t pointlen;
 
 	if (c->mtd->point) {
-		ret = c->mtd->point (c->mtd, 0, c->mtd->size, &pointlen, &flashbuf);
+		ret = c->mtd->point(c->mtd, 0, c->mtd->size, &pointlen,
+				    (void **)&flashbuf, NULL);
 		if (!ret && pointlen < c->mtd->size) {
 			/* Don't muck about if it won't let us point to the whole flash */
 			D1(printk(KERN_DEBUG "MTD point returned len too short: 0x%zx\n", pointlen));
-			c->mtd->unpoint(c->mtd, flashbuf, 0, pointlen);
+			c->mtd->unpoint(c->mtd, 0, pointlen);
 			flashbuf = NULL;
 		}
 		if (ret)
@@ -267,7 +268,7 @@ int jffs2_scan_medium(struct jffs2_sb_info *c)
 		kfree(flashbuf);
 #ifndef __ECOS
 	else
-		c->mtd->unpoint(c->mtd, flashbuf, 0, c->mtd->size);
+		c->mtd->unpoint(c->mtd, 0, c->mtd->size);
 #endif
 	if (s)
 		kfree(s);
@@ -940,7 +941,7 @@ struct jffs2_inode_cache *jffs2_scan_make_ino_cache(struct jffs2_sb_info *c, uin
 	ic->nodes = (void *)ic;
 	jffs2_add_ino_cache(c, ic);
 	if (ino == 1)
-		ic->nlink = 1;
+		ic->pino_nlink = 1;
 	return ic;
 }
 

fs/jffs2/super.c

@@ -31,11 +31,12 @@ static struct kmem_cache *jffs2_inode_cachep;
 
 static struct inode *jffs2_alloc_inode(struct super_block *sb)
 {
-	struct jffs2_inode_info *ei;
-	ei = (struct jffs2_inode_info *)kmem_cache_alloc(jffs2_inode_cachep, GFP_KERNEL);
-	if (!ei)
+	struct jffs2_inode_info *f;
+
+	f = kmem_cache_alloc(jffs2_inode_cachep, GFP_KERNEL);
+	if (!f)
 		return NULL;
-	return &ei->vfs_inode;
+	return &f->vfs_inode;
 }
 
 static void jffs2_destroy_inode(struct inode *inode)
@@ -45,10 +46,10 @@ static void jffs2_destroy_inode(struct inode *inode)
 
 static void jffs2_i_init_once(struct kmem_cache *cachep, void *foo)
 {
-	struct jffs2_inode_info *ei = (struct jffs2_inode_info *) foo;
+	struct jffs2_inode_info *f = foo;
 
-	mutex_init(&ei->sem);
-	inode_init_once(&ei->vfs_inode);
+	mutex_init(&f->sem);
+	inode_init_once(&f->vfs_inode);
 }
 
 static int jffs2_sync_fs(struct super_block *sb, int wait)

fs/jffs2/wbuf.c

@@ -494,7 +494,7 @@ static void jffs2_wbuf_recover(struct jffs2_sb_info *c)
 				/* If it's an in-core inode, then we have to adjust any
 				   full_dirent or full_dnode structure to point to the
 				   new version instead of the old */
-				f = jffs2_gc_fetch_inode(c, ic->ino, ic->nlink);
+				f = jffs2_gc_fetch_inode(c, ic->ino, !ic->pino_nlink);
 				if (IS_ERR(f)) {
 					/* Should never happen; it _must_ be present */
 					JFFS2_ERROR("Failed to iget() ino #%u, err %ld\n",

fs/jffs2/write.c

@@ -19,7 +19,8 @@
 #include "compr.h"
 
 
-int jffs2_do_new_inode(struct jffs2_sb_info *c, struct jffs2_inode_info *f, uint32_t mode, struct jffs2_raw_inode *ri)
+int jffs2_do_new_inode(struct jffs2_sb_info *c, struct jffs2_inode_info *f,
+		       uint32_t mode, struct jffs2_raw_inode *ri)
 {
 	struct jffs2_inode_cache *ic;
 
@@ -31,7 +32,7 @@ int jffs2_do_new_inode(struct jffs2_sb_info *c, struct jffs2_inode_info *f, uint
 	memset(ic, 0, sizeof(*ic));
 
 	f->inocache = ic;
-	f->inocache->nlink = 1;
+	f->inocache->pino_nlink = 1; /* Will be overwritten shortly for directories */
 	f->inocache->nodes = (struct jffs2_raw_node_ref *)f->inocache;
 	f->inocache->state = INO_STATE_PRESENT;
 
@@ -438,10 +439,10 @@ int jffs2_do_create(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, str
 	ret = jffs2_reserve_space(c, sizeof(*ri), &alloclen, ALLOC_NORMAL,
 				JFFS2_SUMMARY_INODE_SIZE);
 	D1(printk(KERN_DEBUG "jffs2_do_create(): reserved 0x%x bytes\n", alloclen));
-	if (ret) {
-		mutex_unlock(&f->sem);
+	if (ret)
 		return ret;
-	}
+
+	mutex_lock(&f->sem);
 
 	ri->data_crc = cpu_to_je32(0);
 	ri->node_crc = cpu_to_je32(crc32(0, ri, sizeof(*ri)-8));
@@ -635,9 +636,9 @@ int jffs2_do_unlink(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f,
 					jffs2_mark_node_obsolete(c, fd->raw);
 				jffs2_free_full_dirent(fd);
 			}
-		}
-
-		dead_f->inocache->nlink--;
+			dead_f->inocache->pino_nlink = 0;
+		} else
+			dead_f->inocache->pino_nlink--;
 		/* NB: Caller must set inode nlink if appropriate */
 		mutex_unlock(&dead_f->sem);
 	}

fs/jffs2/xattr.c

@@ -592,7 +592,7 @@ void jffs2_xattr_delete_inode(struct jffs2_sb_info *c, struct jffs2_inode_cache
 	   When an inode with XATTR is removed, those XATTRs must be removed. */
 	struct jffs2_xattr_ref *ref, *_ref;
 
-	if (!ic || ic->nlink > 0)
+	if (!ic || ic->pino_nlink > 0)
 		return;
 
 	down_write(&c->xattr_sem);
@@ -829,7 +829,7 @@ void jffs2_build_xattr_subsystem(struct jffs2_sb_info *c)
 			   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 || !ic->nlink) {
+			if (!xd || !ic || !ic->pino_nlink) {
 				dbg_xattr("xref(ino=%u, xid=%u, xseqno=%u) is orphan.\n",
 					  ref->ino, ref->xid, ref->xseqno);
 				ref->xseqno |= XREF_DELETE_MARKER;

include/linux/mtd/jedec.h

-
-/* JEDEC Flash Interface.
- * This is an older type of interface for self programming flash. It is
- * commonly use in older AMD chips and is obsolete compared with CFI.
- * It is called JEDEC because the JEDEC association distributes the ID codes
- * for the chips.
- *
- * See the AMD flash databook for information on how to operate the interface.
- *
- * $Id: jedec.h,v 1.4 2005/11/07 11:14:54 gleixner Exp $
- */
-
-#ifndef __LINUX_MTD_JEDEC_H__
-#define __LINUX_MTD_JEDEC_H__
-
-#include <linux/types.h>
-
-#define MAX_JEDEC_CHIPS 16
-
-// Listing of all supported chips and their information
-struct JEDECTable
-{
-   __u16 jedec;
-   char *name;
-   unsigned long size;
-   unsigned long sectorsize;
-   __u32 capabilities;
-};
-
-// JEDEC being 0 is the end of the chip array
-struct jedec_flash_chip
-{
-   __u16 jedec;
-   unsigned long size;
-   unsigned long sectorsize;
-
-   // *(__u8*)(base + (adder << addrshift)) = data << datashift
-   // Address size = size << addrshift
-   unsigned long base;           // Byte 0 of the flash, will be unaligned
-   unsigned int datashift;       // Useful for 32bit/16bit accesses
-   unsigned int addrshift;
-   unsigned long offset;         // linerized start. base==offset for unbanked, uninterleaved flash
-
-   __u32 capabilities;
-
-   // These markers are filled in by the flash_chip_scan function
-   unsigned long start;
-   unsigned long length;
-};
-
-struct jedec_private
-{
-   unsigned long size;         // Total size of all the devices
-
-   /* Bank handling. If sum(bank_fill) == size then this is linear flash.
-      Otherwise the mapping has holes in it. bank_fill may be used to
-      find the holes, but in the common symetric case
-      bank_fill[0] == bank_fill[*], thus addresses may be computed
-      mathmatically. bank_fill must be powers of two */
-   unsigned is_banked;
-   unsigned long bank_fill[MAX_JEDEC_CHIPS];
-
-   struct jedec_flash_chip chips[MAX_JEDEC_CHIPS];
-};
-
-#endif

include/linux/mtd/mtd.h

@@ -143,10 +143,12 @@ struct mtd_info {
 	int (*erase) (struct mtd_info *mtd, struct erase_info *instr);
 
 	/* This stuff for eXecute-In-Place */
-	int (*point) (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char **mtdbuf);
+	/* phys is optional and may be set to NULL */
+	int (*point) (struct mtd_info *mtd, loff_t from, size_t len,
+			size_t *retlen, void **virt, resource_size_t *phys);
 
 	/* We probably shouldn't allow XIP if the unpoint isn't a NULL */
-	void (*unpoint) (struct mtd_info *mtd, u_char * addr, loff_t from, size_t len);
+	void (*unpoint) (struct mtd_info *mtd, loff_t from, size_t len);
 
 
 	int (*read) (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char *buf);

include/linux/mtd/pmc551.h

@@ -36,8 +36,9 @@ struct mypriv {
  * Function Prototypes
  */
 static int pmc551_erase(struct mtd_info *, struct erase_info *);
-static void pmc551_unpoint(struct mtd_info *, u_char *, loff_t, size_t);
-static int pmc551_point (struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen, u_char **mtdbuf);
+static void pmc551_unpoint(struct mtd_info *, loff_t, size_t);
+static int pmc551_point(struct mtd_info *mtd, loff_t from, size_t len,
+		size_t *retlen, void **virt, resource_size_t *phys);
 static int pmc551_read(struct mtd_info *, loff_t, size_t, size_t *, u_char *);
 static int pmc551_write(struct mtd_info *, loff_t, size_t, size_t *, const u_char *);