Linux-2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

10 files changed, 2230 insertions, 0 deletions

diff --git a/fs/minix/Makefile b/fs/minix/Makefile
new file mode 100644
index 000000000000..3063015abfd0
--- /dev/null
+++ b/fs/minix/Makefile
@@ -0,0 +1,7 @@
+#
+# Makefile for the Linux minix filesystem routines.
+#
+
+obj-$(CONFIG_MINIX_FS) += minix.o
+
+minix-objs := bitmap.o itree_v1.o itree_v2.o namei.o inode.o file.o dir.o
diff --git a/fs/minix/bitmap.c b/fs/minix/bitmap.c
new file mode 100644
index 000000000000..dc6a4e4abcdc
--- /dev/null
+++ b/fs/minix/bitmap.c
@@ -0,0 +1,269 @@
+/*
+ *  linux/fs/minix/bitmap.c
+ *
+ *  Copyright (C) 1991, 1992  Linus Torvalds
+ */
+
+/*
+ * Modified for 680x0 by Hamish Macdonald
+ * Fixed for 680x0 by Andreas Schwab
+ */
+
+/* bitmap.c contains the code that handles the inode and block bitmaps */
+
+#include "minix.h"
+#include <linux/smp_lock.h>
+#include <linux/buffer_head.h>
+#include <linux/bitops.h>
+
+static int nibblemap[] = { 4,3,3,2,3,2,2,1,3,2,2,1,2,1,1,0 };
+
+static unsigned long count_free(struct buffer_head *map[], unsigned numblocks, __u32 numbits)
+{
+	unsigned i, j, sum = 0;
+	struct buffer_head *bh;
+  
+	for (i=0; i<numblocks-1; i++) {
+		if (!(bh=map[i])) 
+			return(0);
+		for (j=0; j<BLOCK_SIZE; j++)
+			sum += nibblemap[bh->b_data[j] & 0xf]
+				+ nibblemap[(bh->b_data[j]>>4) & 0xf];
+	}
+
+	if (numblocks==0 || !(bh=map[numblocks-1]))
+		return(0);
+	i = ((numbits-(numblocks-1)*BLOCK_SIZE*8)/16)*2;
+	for (j=0; j<i; j++) {
+		sum += nibblemap[bh->b_data[j] & 0xf]
+			+ nibblemap[(bh->b_data[j]>>4) & 0xf];
+	}
+
+	i = numbits%16;
+	if (i!=0) {
+		i = *(__u16 *)(&bh->b_data[j]) | ~((1<<i) - 1);
+		sum += nibblemap[i & 0xf] + nibblemap[(i>>4) & 0xf];
+		sum += nibblemap[(i>>8) & 0xf] + nibblemap[(i>>12) & 0xf];
+	}
+	return(sum);
+}
+
+void minix_free_block(struct inode * inode, int block)
+{
+	struct super_block * sb = inode->i_sb;
+	struct minix_sb_info * sbi = minix_sb(sb);
+	struct buffer_head * bh;
+	unsigned int bit,zone;
+
+	if (block < sbi->s_firstdatazone || block >= sbi->s_nzones) {
+		printk("trying to free block not in datazone\n");
+		return;
+	}
+	zone = block - sbi->s_firstdatazone + 1;
+	bit = zone & 8191;
+	zone >>= 13;
+	if (zone >= sbi->s_zmap_blocks) {
+		printk("minix_free_block: nonexistent bitmap buffer\n");
+		return;
+	}
+	bh = sbi->s_zmap[zone];
+	lock_kernel();
+	if (!minix_test_and_clear_bit(bit,bh->b_data))
+		printk("free_block (%s:%d): bit already cleared\n",
+		       sb->s_id, block);
+	unlock_kernel();
+	mark_buffer_dirty(bh);
+	return;
+}
+
+int minix_new_block(struct inode * inode)
+{
+	struct minix_sb_info *sbi = minix_sb(inode->i_sb);
+	int i;
+
+	for (i = 0; i < sbi->s_zmap_blocks; i++) {
+		struct buffer_head *bh = sbi->s_zmap[i];
+		int j;
+
+		lock_kernel();
+		if ((j = minix_find_first_zero_bit(bh->b_data, 8192)) < 8192) {
+			minix_set_bit(j,bh->b_data);
+			unlock_kernel();
+			mark_buffer_dirty(bh);
+			j += i*8192 + sbi->s_firstdatazone-1;
+			if (j < sbi->s_firstdatazone || j >= sbi->s_nzones)
+				break;
+			return j;
+		}
+		unlock_kernel();
+	}
+	return 0;
+}
+
+unsigned long minix_count_free_blocks(struct minix_sb_info *sbi)
+{
+	return (count_free(sbi->s_zmap, sbi->s_zmap_blocks,
+		sbi->s_nzones - sbi->s_firstdatazone + 1)
+		<< sbi->s_log_zone_size);
+}
+
+struct minix_inode *
+minix_V1_raw_inode(struct super_block *sb, ino_t ino, struct buffer_head **bh)
+{
+	int block;
+	struct minix_sb_info *sbi = minix_sb(sb);
+	struct minix_inode *p;
+
+	if (!ino || ino > sbi->s_ninodes) {
+		printk("Bad inode number on dev %s: %ld is out of range\n",
+		       sb->s_id, (long)ino);
+		return NULL;
+	}
+	ino--;
+	block = 2 + sbi->s_imap_blocks + sbi->s_zmap_blocks +
+		 ino / MINIX_INODES_PER_BLOCK;
+	*bh = sb_bread(sb, block);
+	if (!*bh) {
+		printk("unable to read i-node block\n");
+		return NULL;
+	}
+	p = (void *)(*bh)->b_data;
+	return p + ino % MINIX_INODES_PER_BLOCK;
+}
+
+struct minix2_inode *
+minix_V2_raw_inode(struct super_block *sb, ino_t ino, struct buffer_head **bh)
+{
+	int block;
+	struct minix_sb_info *sbi = minix_sb(sb);
+	struct minix2_inode *p;
+
+	*bh = NULL;
+	if (!ino || ino > sbi->s_ninodes) {
+		printk("Bad inode number on dev %s: %ld is out of range\n",
+		       sb->s_id, (long)ino);
+		return NULL;
+	}
+	ino--;
+	block = 2 + sbi->s_imap_blocks + sbi->s_zmap_blocks +
+		 ino / MINIX2_INODES_PER_BLOCK;
+	*bh = sb_bread(sb, block);
+	if (!*bh) {
+		printk("unable to read i-node block\n");
+		return NULL;
+	}
+	p = (void *)(*bh)->b_data;
+	return p + ino % MINIX2_INODES_PER_BLOCK;
+}
+
+/* Clear the link count and mode of a deleted inode on disk. */
+
+static void minix_clear_inode(struct inode *inode)
+{
+	struct buffer_head *bh = NULL;
+
+	if (INODE_VERSION(inode) == MINIX_V1) {
+		struct minix_inode *raw_inode;
+		raw_inode = minix_V1_raw_inode(inode->i_sb, inode->i_ino, &bh);
+		if (raw_inode) {
+			raw_inode->i_nlinks = 0;
+			raw_inode->i_mode = 0;
+		}
+	} else {
+		struct minix2_inode *raw_inode;
+		raw_inode = minix_V2_raw_inode(inode->i_sb, inode->i_ino, &bh);
+		if (raw_inode) {
+			raw_inode->i_nlinks = 0;
+			raw_inode->i_mode = 0;
+		}
+	}
+	if (bh) {
+		mark_buffer_dirty(bh);
+		brelse (bh);
+	}
+}
+
+void minix_free_inode(struct inode * inode)
+{
+	struct minix_sb_info *sbi = minix_sb(inode->i_sb);
+	struct buffer_head * bh;
+	unsigned long ino;
+
+	ino = inode->i_ino;
+	if (ino < 1 || ino > sbi->s_ninodes) {
+		printk("minix_free_inode: inode 0 or nonexistent inode\n");
+		goto out;
+	}
+	if ((ino >> 13) >= sbi->s_imap_blocks) {
+		printk("minix_free_inode: nonexistent imap in superblock\n");
+		goto out;
+	}
+
+	minix_clear_inode(inode);	/* clear on-disk copy */
+
+	bh = sbi->s_imap[ino >> 13];
+	lock_kernel();
+	if (!minix_test_and_clear_bit(ino & 8191, bh->b_data))
+		printk("minix_free_inode: bit %lu already cleared.\n", ino);
+	unlock_kernel();
+	mark_buffer_dirty(bh);
+ out:
+	clear_inode(inode);		/* clear in-memory copy */
+}
+
+struct inode * minix_new_inode(const struct inode * dir, int * error)
+{
+	struct super_block *sb = dir->i_sb;
+	struct minix_sb_info *sbi = minix_sb(sb);
+	struct inode *inode = new_inode(sb);
+	struct buffer_head * bh;
+	int i,j;
+
+	if (!inode) {
+		*error = -ENOMEM;
+		return NULL;
+	}
+	j = 8192;
+	bh = NULL;
+	*error = -ENOSPC;
+	lock_kernel();
+	for (i = 0; i < sbi->s_imap_blocks; i++) {
+		bh = sbi->s_imap[i];
+		if ((j = minix_find_first_zero_bit(bh->b_data, 8192)) < 8192)
+			break;
+	}
+	if (!bh || j >= 8192) {
+		unlock_kernel();
+		iput(inode);
+		return NULL;
+	}
+	if (minix_test_and_set_bit(j,bh->b_data)) {	/* shouldn't happen */
+		printk("new_inode: bit already set");
+		unlock_kernel();
+		iput(inode);
+		return NULL;
+	}
+	unlock_kernel();
+	mark_buffer_dirty(bh);
+	j += i*8192;
+	if (!j || j > sbi->s_ninodes) {
+		iput(inode);
+		return NULL;
+	}
+	inode->i_uid = current->fsuid;
+	inode->i_gid = (dir->i_mode & S_ISGID) ? dir->i_gid : current->fsgid;
+	inode->i_ino = j;
+	inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME_SEC;
+	inode->i_blocks = inode->i_blksize = 0;
+	memset(&minix_i(inode)->u, 0, sizeof(minix_i(inode)->u));
+	insert_inode_hash(inode);
+	mark_inode_dirty(inode);
+
+	*error = 0;
+	return inode;
+}
+
+unsigned long minix_count_free_inodes(struct minix_sb_info *sbi)
+{
+	return count_free(sbi->s_imap, sbi->s_imap_blocks, sbi->s_ninodes + 1);
+}
diff --git a/fs/minix/dir.c b/fs/minix/dir.c
new file mode 100644
index 000000000000..732502aabc05
--- /dev/null
+++ b/fs/minix/dir.c
@@ -0,0 +1,409 @@
+/*
+ *  linux/fs/minix/dir.c
+ *
+ *  Copyright (C) 1991, 1992 Linus Torvalds
+ *
+ *  minix directory handling functions
+ */
+
+#include "minix.h"
+#include <linux/highmem.h>
+#include <linux/smp_lock.h>
+
+typedef struct minix_dir_entry minix_dirent;
+
+static int minix_readdir(struct file *, void *, filldir_t);
+
+struct file_operations minix_dir_operations = {
+	.read		= generic_read_dir,
+	.readdir	= minix_readdir,
+	.fsync		= minix_sync_file,
+};
+
+static inline void dir_put_page(struct page *page)
+{
+	kunmap(page);
+	page_cache_release(page);
+}
+
+/*
+ * Return the offset into page `page_nr' of the last valid
+ * byte in that page, plus one.
+ */
+static unsigned
+minix_last_byte(struct inode *inode, unsigned long page_nr)
+{
+	unsigned last_byte = PAGE_CACHE_SIZE;
+
+	if (page_nr == (inode->i_size >> PAGE_CACHE_SHIFT))
+		last_byte = inode->i_size & (PAGE_CACHE_SIZE - 1);
+	return last_byte;
+}
+
+static inline unsigned long dir_pages(struct inode *inode)
+{
+	return (inode->i_size+PAGE_CACHE_SIZE-1)>>PAGE_CACHE_SHIFT;
+}
+
+static int dir_commit_chunk(struct page *page, unsigned from, unsigned to)
+{
+	struct inode *dir = (struct inode *)page->mapping->host;
+	int err = 0;
+	page->mapping->a_ops->commit_write(NULL, page, from, to);
+	if (IS_DIRSYNC(dir))
+		err = write_one_page(page, 1);
+	else
+		unlock_page(page);
+	return err;
+}
+
+static struct page * dir_get_page(struct inode *dir, unsigned long n)
+{
+	struct address_space *mapping = dir->i_mapping;
+	struct page *page = read_cache_page(mapping, n,
+				(filler_t*)mapping->a_ops->readpage, NULL);
+	if (!IS_ERR(page)) {
+		wait_on_page_locked(page);
+		kmap(page);
+		if (!PageUptodate(page))
+			goto fail;
+	}
+	return page;
+
+fail:
+	dir_put_page(page);
+	return ERR_PTR(-EIO);
+}
+
+static inline void *minix_next_entry(void *de, struct minix_sb_info *sbi)
+{
+	return (void*)((char*)de + sbi->s_dirsize);
+}
+
+static int minix_readdir(struct file * filp, void * dirent, filldir_t filldir)
+{
+	unsigned long pos = filp->f_pos;
+	struct inode *inode = filp->f_dentry->d_inode;
+	struct super_block *sb = inode->i_sb;
+	unsigned offset = pos & ~PAGE_CACHE_MASK;
+	unsigned long n = pos >> PAGE_CACHE_SHIFT;
+	unsigned long npages = dir_pages(inode);
+	struct minix_sb_info *sbi = minix_sb(sb);
+	unsigned chunk_size = sbi->s_dirsize;
+
+	lock_kernel();
+
+	pos = (pos + chunk_size-1) & ~(chunk_size-1);
+	if (pos >= inode->i_size)
+		goto done;
+
+	for ( ; n < npages; n++, offset = 0) {
+		char *p, *kaddr, *limit;
+		struct page *page = dir_get_page(inode, n);
+
+		if (IS_ERR(page))
+			continue;
+		kaddr = (char *)page_address(page);
+		p = kaddr+offset;
+		limit = kaddr + minix_last_byte(inode, n) - chunk_size;
+		for ( ; p <= limit ; p = minix_next_entry(p, sbi)) {
+			minix_dirent *de = (minix_dirent *)p;
+			if (de->inode) {
+				int over;
+				unsigned l = strnlen(de->name,sbi->s_namelen);
+
+				offset = p - kaddr;
+				over = filldir(dirent, de->name, l,
+						(n<<PAGE_CACHE_SHIFT) | offset,
+						de->inode, DT_UNKNOWN);
+				if (over) {
+					dir_put_page(page);
+					goto done;
+				}
+			}
+		}
+		dir_put_page(page);
+	}
+
+done:
+	filp->f_pos = (n << PAGE_CACHE_SHIFT) | offset;
+	unlock_kernel();
+	return 0;
+}
+
+static inline int namecompare(int len, int maxlen,
+	const char * name, const char * buffer)
+{
+	if (len < maxlen && buffer[len])
+		return 0;
+	return !memcmp(name, buffer, len);
+}
+
+/*
+ *	minix_find_entry()
+ *
+ * finds an entry in the specified directory with the wanted name. It
+ * returns the cache buffer in which the entry was found, and the entry
+ * itself (as a parameter - res_dir). It does NOT read the inode of the
+ * entry - you'll have to do that yourself if you want to.
+ */
+minix_dirent *minix_find_entry(struct dentry *dentry, struct page **res_page)
+{
+	const char * name = dentry->d_name.name;
+	int namelen = dentry->d_name.len;
+	struct inode * dir = dentry->d_parent->d_inode;
+	struct super_block * sb = dir->i_sb;
+	struct minix_sb_info * sbi = minix_sb(sb);
+	unsigned long n;
+	unsigned long npages = dir_pages(dir);
+	struct page *page = NULL;
+	struct minix_dir_entry *de;
+
+	*res_page = NULL;
+
+	for (n = 0; n < npages; n++) {
+		char *kaddr;
+		page = dir_get_page(dir, n);
+		if (IS_ERR(page))
+			continue;
+
+		kaddr = (char*)page_address(page);
+		de = (struct minix_dir_entry *) kaddr;
+		kaddr += minix_last_byte(dir, n) - sbi->s_dirsize;
+		for ( ; (char *) de <= kaddr ; de = minix_next_entry(de,sbi)) {
+			if (!de->inode)
+				continue;
+			if (namecompare(namelen,sbi->s_namelen,name,de->name))
+				goto found;
+		}
+		dir_put_page(page);
+	}
+	return NULL;
+
+found:
+	*res_page = page;
+	return de;
+}
+
+int minix_add_link(struct dentry *dentry, struct inode *inode)
+{
+	struct inode *dir = dentry->d_parent->d_inode;
+	const char * name = dentry->d_name.name;
+	int namelen = dentry->d_name.len;
+	struct super_block * sb = dir->i_sb;
+	struct minix_sb_info * sbi = minix_sb(sb);
+	struct page *page = NULL;
+	struct minix_dir_entry * de;
+	unsigned long npages = dir_pages(dir);
+	unsigned long n;
+	char *kaddr;
+	unsigned from, to;
+	int err;
+
+	/*
+	 * We take care of directory expansion in the same loop
+	 * This code plays outside i_size, so it locks the page
+	 * to protect that region.
+	 */
+	for (n = 0; n <= npages; n++) {
+		char *dir_end;
+
+		page = dir_get_page(dir, n);
+		err = PTR_ERR(page);
+		if (IS_ERR(page))
+			goto out;
+		lock_page(page);
+		kaddr = (char*)page_address(page);
+		dir_end = kaddr + minix_last_byte(dir, n);
+		de = (minix_dirent *)kaddr;
+		kaddr += PAGE_CACHE_SIZE - sbi->s_dirsize;
+		while ((char *)de <= kaddr) {
+			if ((char *)de == dir_end) {
+				/* We hit i_size */
+				de->inode = 0;
+				goto got_it;
+			}
+			if (!de->inode)
+				goto got_it;
+			err = -EEXIST;
+			if (namecompare(namelen,sbi->s_namelen,name,de->name))
+				goto out_unlock;
+			de = minix_next_entry(de, sbi);
+		}
+		unlock_page(page);
+		dir_put_page(page);
+	}
+	BUG();
+	return -EINVAL;
+
+got_it:
+	from = (char*)de - (char*)page_address(page);
+	to = from + sbi->s_dirsize;
+	err = page->mapping->a_ops->prepare_write(NULL, page, from, to);
+	if (err)
+		goto out_unlock;
+	memcpy (de->name, name, namelen);
+	memset (de->name + namelen, 0, sbi->s_dirsize - namelen - 2);
+	de->inode = inode->i_ino;
+	err = dir_commit_chunk(page, from, to);
+	dir->i_mtime = dir->i_ctime = CURRENT_TIME_SEC;
+	mark_inode_dirty(dir);
+out_put:
+	dir_put_page(page);
+out:
+	return err;
+out_unlock:
+	unlock_page(page);
+	goto out_put;
+}
+
+int minix_delete_entry(struct minix_dir_entry *de, struct page *page)
+{
+	struct address_space *mapping = page->mapping;
+	struct inode *inode = (struct inode*)mapping->host;
+	char *kaddr = page_address(page);
+	unsigned from = (char*)de - kaddr;
+	unsigned to = from + minix_sb(inode->i_sb)->s_dirsize;
+	int err;
+
+	lock_page(page);
+	err = mapping->a_ops->prepare_write(NULL, page, from, to);
+	if (err == 0) {
+		de->inode = 0;
+		err = dir_commit_chunk(page, from, to);
+	} else {
+		unlock_page(page);
+	}
+	dir_put_page(page);
+	inode->i_ctime = inode->i_mtime = CURRENT_TIME_SEC;
+	mark_inode_dirty(inode);
+	return err;
+}
+
+int minix_make_empty(struct inode *inode, struct inode *dir)
+{
+	struct address_space *mapping = inode->i_mapping;
+	struct page *page = grab_cache_page(mapping, 0);
+	struct minix_sb_info * sbi = minix_sb(inode->i_sb);
+	struct minix_dir_entry * de;
+	char *kaddr;
+	int err;
+
+	if (!page)
+		return -ENOMEM;
+	err = mapping->a_ops->prepare_write(NULL, page, 0, 2 * sbi->s_dirsize);
+	if (err) {
+		unlock_page(page);
+		goto fail;
+	}
+
+	kaddr = kmap_atomic(page, KM_USER0);
+	memset(kaddr, 0, PAGE_CACHE_SIZE);
+
+	de = (struct minix_dir_entry *)kaddr;
+	de->inode = inode->i_ino;
+	strcpy(de->name,".");
+	de = minix_next_entry(de, sbi);
+	de->inode = dir->i_ino;
+	strcpy(de->name,"..");
+	kunmap_atomic(kaddr, KM_USER0);
+
+	err = dir_commit_chunk(page, 0, 2 * sbi->s_dirsize);
+fail:
+	page_cache_release(page);
+	return err;
+}
+
+/*
+ * routine to check that the specified directory is empty (for rmdir)
+ */
+int minix_empty_dir(struct inode * inode)
+{
+	struct page *page = NULL;
+	unsigned long i, npages = dir_pages(inode);
+	struct minix_sb_info *sbi = minix_sb(inode->i_sb);
+
+	for (i = 0; i < npages; i++) {
+		char *kaddr;
+		minix_dirent * de;
+		page = dir_get_page(inode, i);
+
+		if (IS_ERR(page))
+			continue;
+
+		kaddr = (char *)page_address(page);
+		de = (minix_dirent *)kaddr;
+		kaddr += minix_last_byte(inode, i) - sbi->s_dirsize;
+
+		while ((char *)de <= kaddr) {
+			if (de->inode != 0) {
+				/* check for . and .. */
+				if (de->name[0] != '.')
+					goto not_empty;
+				if (!de->name[1]) {
+					if (de->inode != inode->i_ino)
+						goto not_empty;
+				} else if (de->name[1] != '.')
+					goto not_empty;
+				else if (de->name[2])
+					goto not_empty;
+			}
+			de = minix_next_entry(de, sbi);
+		}
+		dir_put_page(page);
+	}
+	return 1;
+
+not_empty:
+	dir_put_page(page);
+	return 0;
+}
+
+/* Releases the page */
+void minix_set_link(struct minix_dir_entry *de, struct page *page,
+	struct inode *inode)
+{
+	struct inode *dir = (struct inode*)page->mapping->host;
+	struct minix_sb_info *sbi = minix_sb(dir->i_sb);
+	unsigned from = (char *)de-(char*)page_address(page);
+	unsigned to = from + sbi->s_dirsize;
+	int err;
+
+	lock_page(page);
+	err = page->mapping->a_ops->prepare_write(NULL, page, from, to);
+	if (err == 0) {
+		de->inode = inode->i_ino;
+		err = dir_commit_chunk(page, from, to);
+	} else {
+		unlock_page(page);
+	}
+	dir_put_page(page);
+	dir->i_mtime = dir->i_ctime = CURRENT_TIME_SEC;
+	mark_inode_dirty(dir);
+}
+
+struct minix_dir_entry * minix_dotdot (struct inode *dir, struct page **p)
+{
+	struct page *page = dir_get_page(dir, 0);
+	struct minix_sb_info *sbi = minix_sb(dir->i_sb);
+	struct minix_dir_entry *de = NULL;
+
+	if (!IS_ERR(page)) {
+		de = minix_next_entry(page_address(page), sbi);
+		*p = page;
+	}
+	return de;
+}
+
+ino_t minix_inode_by_name(struct dentry *dentry)
+{
+	struct page *page;
+	struct minix_dir_entry *de = minix_find_entry(dentry, &page);
+	ino_t res = 0;
+
+	if (de) {
+		res = de->inode;
+		dir_put_page(page);
+	}
+	return res;
+}
diff --git a/fs/minix/file.c b/fs/minix/file.c
new file mode 100644
index 000000000000..f1d77acb3f01
--- /dev/null
+++ b/fs/minix/file.c
@@ -0,0 +1,45 @@
+/*
+ *  linux/fs/minix/file.c
+ *
+ *  Copyright (C) 1991, 1992 Linus Torvalds
+ *
+ *  minix regular file handling primitives
+ */
+
+#include <linux/buffer_head.h>		/* for fsync_inode_buffers() */
+#include "minix.h"
+
+/*
+ * We have mostly NULLs here: the current defaults are OK for
+ * the minix filesystem.
+ */
+int minix_sync_file(struct file *, struct dentry *, int);
+
+struct file_operations minix_file_operations = {
+	.llseek		= generic_file_llseek,
+	.read		= generic_file_read,
+	.write		= generic_file_write,
+	.mmap		= generic_file_mmap,
+	.fsync		= minix_sync_file,
+	.sendfile	= generic_file_sendfile,
+};
+
+struct inode_operations minix_file_inode_operations = {
+	.truncate	= minix_truncate,
+	.getattr	= minix_getattr,
+};
+
+int minix_sync_file(struct file * file, struct dentry *dentry, int datasync)
+{
+	struct inode *inode = dentry->d_inode;
+	int err;
+
+	err = sync_mapping_buffers(inode->i_mapping);
+	if (!(inode->i_state & I_DIRTY))
+		return err;
+	if (datasync && !(inode->i_state & I_DIRTY_DATASYNC))
+		return err;
+	
+	err |= minix_sync_inode(inode);
+	return err ? -EIO : 0;
+}
diff --git a/fs/minix/inode.c b/fs/minix/inode.c
new file mode 100644
index 000000000000..3f18c21198d7
--- /dev/null
+++ b/fs/minix/inode.c
@@ -0,0 +1,598 @@
+/*
+ *  linux/fs/minix/inode.c
+ *
+ *  Copyright (C) 1991, 1992  Linus Torvalds
+ *
+ *  Copyright (C) 1996  Gertjan van Wingerde    (gertjan@cs.vu.nl)
+ *	Minix V2 fs support.
+ *
+ *  Modified for 680x0 by Andreas Schwab
+ */
+
+#include <linux/module.h>
+#include "minix.h"
+#include <linux/buffer_head.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/highuid.h>
+#include <linux/vfs.h>
+
+static void minix_read_inode(struct inode * inode);
+static int minix_write_inode(struct inode * inode, int wait);
+static int minix_statfs(struct super_block *sb, struct kstatfs *buf);
+static int minix_remount (struct super_block * sb, int * flags, char * data);
+
+static void minix_delete_inode(struct inode *inode)
+{
+	inode->i_size = 0;
+	minix_truncate(inode);
+	minix_free_inode(inode);
+}
+
+static void minix_put_super(struct super_block *sb)
+{
+	int i;
+	struct minix_sb_info *sbi = minix_sb(sb);
+
+	if (!(sb->s_flags & MS_RDONLY)) {
+		sbi->s_ms->s_state = sbi->s_mount_state;
+		mark_buffer_dirty(sbi->s_sbh);
+	}
+	for (i = 0; i < sbi->s_imap_blocks; i++)
+		brelse(sbi->s_imap[i]);
+	for (i = 0; i < sbi->s_zmap_blocks; i++)
+		brelse(sbi->s_zmap[i]);
+	brelse (sbi->s_sbh);
+	kfree(sbi->s_imap);
+	sb->s_fs_info = NULL;
+	kfree(sbi);
+
+	return;
+}
+
+static kmem_cache_t * minix_inode_cachep;
+
+static struct inode *minix_alloc_inode(struct super_block *sb)
+{
+	struct minix_inode_info *ei;
+	ei = (struct minix_inode_info *)kmem_cache_alloc(minix_inode_cachep, SLAB_KERNEL);
+	if (!ei)
+		return NULL;
+	return &ei->vfs_inode;
+}
+
+static void minix_destroy_inode(struct inode *inode)
+{
+	kmem_cache_free(minix_inode_cachep, minix_i(inode));
+}
+
+static void init_once(void * foo, kmem_cache_t * cachep, unsigned long flags)
+{
+	struct minix_inode_info *ei = (struct minix_inode_info *) foo;
+
+	if ((flags & (SLAB_CTOR_VERIFY|SLAB_CTOR_CONSTRUCTOR)) ==
+	    SLAB_CTOR_CONSTRUCTOR)
+		inode_init_once(&ei->vfs_inode);
+}
+ 
+static int init_inodecache(void)
+{
+	minix_inode_cachep = kmem_cache_create("minix_inode_cache",
+					     sizeof(struct minix_inode_info),
+					     0, SLAB_RECLAIM_ACCOUNT,
+					     init_once, NULL);
+	if (minix_inode_cachep == NULL)
+		return -ENOMEM;
+	return 0;
+}
+
+static void destroy_inodecache(void)
+{
+	if (kmem_cache_destroy(minix_inode_cachep))
+		printk(KERN_INFO "minix_inode_cache: not all structures were freed\n");
+}
+
+static struct super_operations minix_sops = {
+	.alloc_inode	= minix_alloc_inode,
+	.destroy_inode	= minix_destroy_inode,
+	.read_inode	= minix_read_inode,
+	.write_inode	= minix_write_inode,
+	.delete_inode	= minix_delete_inode,
+	.put_super	= minix_put_super,
+	.statfs		= minix_statfs,
+	.remount_fs	= minix_remount,
+};
+
+static int minix_remount (struct super_block * sb, int * flags, char * data)
+{
+	struct minix_sb_info * sbi = minix_sb(sb);
+	struct minix_super_block * ms;
+
+	ms = sbi->s_ms;
+	if ((*flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY))
+		return 0;
+	if (*flags & MS_RDONLY) {
+		if (ms->s_state & MINIX_VALID_FS ||
+		    !(sbi->s_mount_state & MINIX_VALID_FS))
+			return 0;
+		/* Mounting a rw partition read-only. */
+		ms->s_state = sbi->s_mount_state;
+		mark_buffer_dirty(sbi->s_sbh);
+	} else {
+	  	/* Mount a partition which is read-only, read-write. */
+		sbi->s_mount_state = ms->s_state;
+		ms->s_state &= ~MINIX_VALID_FS;
+		mark_buffer_dirty(sbi->s_sbh);
+
+		if (!(sbi->s_mount_state & MINIX_VALID_FS))
+			printk ("MINIX-fs warning: remounting unchecked fs, "
+				"running fsck is recommended.\n");
+		else if ((sbi->s_mount_state & MINIX_ERROR_FS))
+			printk ("MINIX-fs warning: remounting fs with errors, "
+				"running fsck is recommended.\n");
+	}
+	return 0;
+}
+
+static int minix_fill_super(struct super_block *s, void *data, int silent)
+{
+	struct buffer_head *bh;
+	struct buffer_head **map;
+	struct minix_super_block *ms;
+	int i, block;
+	struct inode *root_inode;
+	struct minix_sb_info *sbi;
+
+	sbi = kmalloc(sizeof(struct minix_sb_info), GFP_KERNEL);
+	if (!sbi)
+		return -ENOMEM;
+	s->s_fs_info = sbi;
+	memset(sbi, 0, sizeof(struct minix_sb_info));
+
+	/* N.B. These should be compile-time tests.
+	   Unfortunately that is impossible. */
+	if (32 != sizeof (struct minix_inode))
+		panic("bad V1 i-node size");
+	if (64 != sizeof(struct minix2_inode))
+		panic("bad V2 i-node size");
+
+	if (!sb_set_blocksize(s, BLOCK_SIZE))
+		goto out_bad_hblock;
+
+	if (!(bh = sb_bread(s, 1)))
+		goto out_bad_sb;
+
+	ms = (struct minix_super_block *) bh->b_data;
+	sbi->s_ms = ms;
+	sbi->s_sbh = bh;
+	sbi->s_mount_state = ms->s_state;
+	sbi->s_ninodes = ms->s_ninodes;
+	sbi->s_nzones = ms->s_nzones;
+	sbi->s_imap_blocks = ms->s_imap_blocks;
+	sbi->s_zmap_blocks = ms->s_zmap_blocks;
+	sbi->s_firstdatazone = ms->s_firstdatazone;
+	sbi->s_log_zone_size = ms->s_log_zone_size;
+	sbi->s_max_size = ms->s_max_size;
+	s->s_magic = ms->s_magic;
+	if (s->s_magic == MINIX_SUPER_MAGIC) {
+		sbi->s_version = MINIX_V1;
+		sbi->s_dirsize = 16;
+		sbi->s_namelen = 14;
+		sbi->s_link_max = MINIX_LINK_MAX;
+	} else if (s->s_magic == MINIX_SUPER_MAGIC2) {
+		sbi->s_version = MINIX_V1;
+		sbi->s_dirsize = 32;
+		sbi->s_namelen = 30;
+		sbi->s_link_max = MINIX_LINK_MAX;
+	} else if (s->s_magic == MINIX2_SUPER_MAGIC) {
+		sbi->s_version = MINIX_V2;
+		sbi->s_nzones = ms->s_zones;
+		sbi->s_dirsize = 16;
+		sbi->s_namelen = 14;
+		sbi->s_link_max = MINIX2_LINK_MAX;
+	} else if (s->s_magic == MINIX2_SUPER_MAGIC2) {
+		sbi->s_version = MINIX_V2;
+		sbi->s_nzones = ms->s_zones;
+		sbi->s_dirsize = 32;
+		sbi->s_namelen = 30;
+		sbi->s_link_max = MINIX2_LINK_MAX;
+	} else
+		goto out_no_fs;
+
+	/*
+	 * Allocate the buffer map to keep the superblock small.
+	 */
+	i = (sbi->s_imap_blocks + sbi->s_zmap_blocks) * sizeof(bh);
+	map = kmalloc(i, GFP_KERNEL);
+	if (!map)
+		goto out_no_map;
+	memset(map, 0, i);
+	sbi->s_imap = &map[0];
+	sbi->s_zmap = &map[sbi->s_imap_blocks];
+
+	block=2;
+	for (i=0 ; i < sbi->s_imap_blocks ; i++) {
+		if (!(sbi->s_imap[i]=sb_bread(s, block)))
+			goto out_no_bitmap;
+		block++;
+	}
+	for (i=0 ; i < sbi->s_zmap_blocks ; i++) {
+		if (!(sbi->s_zmap[i]=sb_bread(s, block)))
+			goto out_no_bitmap;
+		block++;
+	}
+
+	minix_set_bit(0,sbi->s_imap[0]->b_data);
+	minix_set_bit(0,sbi->s_zmap[0]->b_data);
+
+	/* set up enough so that it can read an inode */
+	s->s_op = &minix_sops;
+	root_inode = iget(s, MINIX_ROOT_INO);
+	if (!root_inode || is_bad_inode(root_inode))
+		goto out_no_root;
+
+	s->s_root = d_alloc_root(root_inode);
+	if (!s->s_root)
+		goto out_iput;
+
+	if (!NO_TRUNCATE)
+		s->s_root->d_op = &minix_dentry_operations;
+
+	if (!(s->s_flags & MS_RDONLY)) {
+		ms->s_state &= ~MINIX_VALID_FS;
+		mark_buffer_dirty(bh);
+	}
+	if (!(sbi->s_mount_state & MINIX_VALID_FS))
+		printk ("MINIX-fs: mounting unchecked file system, "
+			"running fsck is recommended.\n");
+ 	else if (sbi->s_mount_state & MINIX_ERROR_FS)
+		printk ("MINIX-fs: mounting file system with errors, "
+			"running fsck is recommended.\n");
+	return 0;
+
+out_iput:
+	iput(root_inode);
+	goto out_freemap;
+
+out_no_root:
+	if (!silent)
+		printk("MINIX-fs: get root inode failed\n");
+	goto out_freemap;
+
+out_no_bitmap:
+	printk("MINIX-fs: bad superblock or unable to read bitmaps\n");
+    out_freemap:
+	for (i = 0; i < sbi->s_imap_blocks; i++)
+		brelse(sbi->s_imap[i]);
+	for (i = 0; i < sbi->s_zmap_blocks; i++)
+		brelse(sbi->s_zmap[i]);
+	kfree(sbi->s_imap);
+	goto out_release;
+
+out_no_map:
+	if (!silent)
+		printk ("MINIX-fs: can't allocate map\n");
+	goto out_release;
+
+out_no_fs:
+	if (!silent)
+		printk("VFS: Can't find a Minix or Minix V2 filesystem on device "
+		       "%s.\n", s->s_id);
+    out_release:
+	brelse(bh);
+	goto out;
+
+out_bad_hblock:
+	printk("MINIX-fs: blocksize too small for device.\n");
+	goto out;
+
+out_bad_sb:
+	printk("MINIX-fs: unable to read superblock\n");
+ out:
+	s->s_fs_info = NULL;
+	kfree(sbi);
+	return -EINVAL;
+}
+
+static int minix_statfs(struct super_block *sb, struct kstatfs *buf)
+{
+	struct minix_sb_info *sbi = minix_sb(sb);
+	buf->f_type = sb->s_magic;
+	buf->f_bsize = sb->s_blocksize;
+	buf->f_blocks = (sbi->s_nzones - sbi->s_firstdatazone) << sbi->s_log_zone_size;
+	buf->f_bfree = minix_count_free_blocks(sbi);
+	buf->f_bavail = buf->f_bfree;
+	buf->f_files = sbi->s_ninodes;
+	buf->f_ffree = minix_count_free_inodes(sbi);
+	buf->f_namelen = sbi->s_namelen;
+	return 0;
+}
+
+static int minix_get_block(struct inode *inode, sector_t block,
+		    struct buffer_head *bh_result, int create)
+{
+	if (INODE_VERSION(inode) == MINIX_V1)
+		return V1_minix_get_block(inode, block, bh_result, create);
+	else
+		return V2_minix_get_block(inode, block, bh_result, create);
+}
+
+static int minix_writepage(struct page *page, struct writeback_control *wbc)
+{
+	return block_write_full_page(page, minix_get_block, wbc);
+}
+static int minix_readpage(struct file *file, struct page *page)
+{
+	return block_read_full_page(page,minix_get_block);
+}
+static int minix_prepare_write(struct file *file, struct page *page, unsigned from, unsigned to)
+{
+	return block_prepare_write(page,from,to,minix_get_block);
+}
+static sector_t minix_bmap(struct address_space *mapping, sector_t block)
+{
+	return generic_block_bmap(mapping,block,minix_get_block);
+}
+static struct address_space_operations minix_aops = {
+	.readpage = minix_readpage,
+	.writepage = minix_writepage,
+	.sync_page = block_sync_page,
+	.prepare_write = minix_prepare_write,
+	.commit_write = generic_commit_write,
+	.bmap = minix_bmap
+};
+
+static struct inode_operations minix_symlink_inode_operations = {
+	.readlink	= generic_readlink,
+	.follow_link	= page_follow_link_light,
+	.put_link	= page_put_link,
+	.getattr	= minix_getattr,
+};
+
+void minix_set_inode(struct inode *inode, dev_t rdev)
+{
+	if (S_ISREG(inode->i_mode)) {
+		inode->i_op = &minix_file_inode_operations;