9 files changed, 233 insertions, 112 deletions

diff --git a/fs/minix/bitmap.c b/fs/minix/bitmap.c
index df6b1075b549..c4a554df7b7e 100644
--- a/fs/minix/bitmap.c
+++ b/fs/minix/bitmap.c
@@ -26,14 +26,14 @@ static unsigned long count_free(struct buffer_head *map[], unsigned numblocks, _
         for (i=0; i<numblocks-1; i++) {
                 if (!(bh=map[i])) 
                         return(0);
-                for (j=0; j<BLOCK_SIZE; j++)
+                for (j=0; j<bh->b_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;
+        i = ((numbits - (numblocks-1) * bh->b_size * 8) / 16) * 2;
         for (j=0; j<i; j++) {
                 sum += nibblemap[bh->b_data[j] & 0xf]
                         + nibblemap[(bh->b_data[j]>>4) & 0xf];
@@ -48,28 +48,29 @@ static unsigned long count_free(struct buffer_head *map[], unsigned numblocks, _
         return(sum);
 }
 
-void minix_free_block(struct inode * inode, int block)
+void minix_free_block(struct inode *inode, unsigned long block)
 {
-        struct super_block * sb = inode->i_sb;
-        struct minix_sb_info * sbi = minix_sb(sb);
-        struct buffer_head * bh;
-        unsigned int bit,zone;
+        struct super_block *sb = inode->i_sb;
+        struct minix_sb_info *sbi = minix_sb(sb);
+        struct buffer_head *bh;
+        int k = sb->s_blocksize_bits + 3;
+        unsigned long 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;
+        bit = zone & ((1<<k) - 1);
+        zone >>= k;
         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",
+        if (!minix_test_and_clear_bit(bit, bh->b_data))
+                printk("minix_free_block (%s:%lu): bit already cleared\n",
                        sb->s_id, block);
         unlock_kernel();
         mark_buffer_dirty(bh);
@@ -79,6 +80,7 @@ void minix_free_block(struct inode * inode, int block)
 int minix_new_block(struct inode * inode)
 {
         struct minix_sb_info *sbi = minix_sb(inode->i_sb);
+        int bits_per_zone = 8 * inode->i_sb->s_blocksize;
         int i;
 
         for (i = 0; i < sbi->s_zmap_blocks; i++) {
@@ -86,11 +88,12 @@ int minix_new_block(struct inode * inode)
                 int j;
 
                 lock_kernel();
-                if ((j = minix_find_first_zero_bit(bh->b_data, 8192)) < 8192) {
-                        minix_set_bit(j,bh->b_data);
+                j = minix_find_first_zero_bit(bh->b_data, bits_per_zone);
+                if (j < bits_per_zone) {
+                        minix_set_bit(j, bh->b_data);
                         unlock_kernel();
                         mark_buffer_dirty(bh);
-                        j += i*8192 + sbi->s_firstdatazone-1;
+                        j += i * bits_per_zone + sbi->s_firstdatazone-1;
                         if (j < sbi->s_firstdatazone || j >= sbi->s_nzones)
                                 break;
                         return j;
@@ -137,6 +140,7 @@ 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;
+        int minix2_inodes_per_block = sb->s_blocksize / sizeof(struct minix2_inode);
 
         *bh = NULL;
         if (!ino || ino > sbi->s_ninodes) {
@@ -146,14 +150,14 @@ minix_V2_raw_inode(struct super_block *sb, ino_t ino, struct buffer_head **bh)
         }
         ino--;
         block = 2 + sbi->s_imap_blocks + sbi->s_zmap_blocks +
-                 ino / MINIX2_INODES_PER_BLOCK;
+                 ino / minix2_inodes_per_block;
         *bh = sb_bread(sb, block);
         if (!*bh) {
                 printk("Unable to read inode block\n");
                 return NULL;
         }
         p = (void *)(*bh)->b_data;
-        return p + ino % MINIX2_INODES_PER_BLOCK;
+        return p + ino % minix2_inodes_per_block;
 }
 
 /* Clear the link count and mode of a deleted inode on disk. */
@@ -185,26 +189,30 @@ static void minix_clear_inode(struct inode *inode)
 
 void minix_free_inode(struct inode * inode)
 {
+        struct super_block *sb = inode->i_sb;
         struct minix_sb_info *sbi = minix_sb(inode->i_sb);
-        struct buffer_head * bh;
-        unsigned long ino;
+        struct buffer_head *bh;
+        int k = sb->s_blocksize_bits + 3;
+        unsigned long ino, bit;
 
         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) {
+        bit = ino & ((1<<k) - 1);
+        ino >>= k;
+        if (ino >= 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];
+        bh = sbi->s_imap[ino];
         lock_kernel();
-        if (!minix_test_and_clear_bit(ino & 8191, bh->b_data))
-                printk("minix_free_inode: bit %lu already cleared\n", ino);
+        if (!minix_test_and_clear_bit(bit, bh->b_data))
+                printk("minix_free_inode: bit %lu already cleared\n", bit);
         unlock_kernel();
         mark_buffer_dirty(bh);
  out:
@@ -217,35 +225,38 @@ struct inode * minix_new_inode(const struct inode * dir, int * error)
         struct minix_sb_info *sbi = minix_sb(sb);
         struct inode *inode = new_inode(sb);
         struct buffer_head * bh;
-        int i,j;
+        int bits_per_zone = 8 * sb->s_blocksize;
+        unsigned long j;
+        int i;
 
         if (!inode) {
                 *error = -ENOMEM;
                 return NULL;
         }
-        j = 8192;
+        j = bits_per_zone;
         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)
+                j = minix_find_first_zero_bit(bh->b_data, bits_per_zone);
+                if (j < bits_per_zone)
                         break;
         }
-        if (!bh || j >= 8192) {
+        if (!bh || j >= bits_per_zone) {
                 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\n");
+        if (minix_test_and_set_bit(j, bh->b_data)) {    /* shouldn't happen */
                 unlock_kernel();
+                printk("minix_new_inode: bit already set\n");
                 iput(inode);
                 return NULL;
         }
         unlock_kernel();
         mark_buffer_dirty(bh);
-        j += i*8192;
+        j += i * bits_per_zone;
         if (!j || j > sbi->s_ninodes) {
                 iput(inode);
                 return NULL;
diff --git a/fs/minix/dir.c b/fs/minix/dir.c
index ab782c4086f5..cb4cb571fddf 100644
--- a/fs/minix/dir.c
+++ b/fs/minix/dir.c
@@ -4,6 +4,8 @@
  *  Copyright (C) 1991, 1992 Linus Torvalds
  *
  *  minix directory handling functions
+ *
+ *  Updated to filesystem version 3 by Daniel Aragones
  */
 
 #include "minix.h"
@@ -11,6 +13,7 @@
 #include <linux/smp_lock.h>
 
 typedef struct minix_dir_entry minix_dirent;
+typedef struct minix3_dir_entry minix3_dirent;
 
 static int minix_readdir(struct file *, void *, filldir_t);
 
@@ -89,6 +92,8 @@ static int minix_readdir(struct file * filp, void * dirent, filldir_t filldir)
         unsigned long npages = dir_pages(inode);
         struct minix_sb_info *sbi = minix_sb(sb);
         unsigned chunk_size = sbi->s_dirsize;
+        char *name;
+        __u32 inumber;
 
         lock_kernel();
 
@@ -105,16 +110,24 @@ static int minix_readdir(struct file * filp, void * dirent, filldir_t filldir)
                 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) {
+                for ( ; p <= limit; p = minix_next_entry(p, sbi)) {
+                        if (sbi->s_version == MINIX_V3) {
+                                minix3_dirent *de3 = (minix3_dirent *)p;
+                                name = de3->name;
+                                inumber = de3->inode;
+                        } else {
+                                minix_dirent *de = (minix_dirent *)p;
+                                name = de->name;
+                                inumber = de->inode;
+                        }
+                        if (inumber) {
                                 int over;
-                                unsigned l = strnlen(de->name,sbi->s_namelen);
 
+                                unsigned l = strnlen(name, sbi->s_namelen);
                                 offset = p - kaddr;
-                                over = filldir(dirent, de->name, l,
-                                                (n<<PAGE_CACHE_SHIFT) | offset,
-                                                de->inode, DT_UNKNOWN);
+                                over = filldir(dirent, name, l,
+                                        (n << PAGE_CACHE_SHIFT) | offset,
+                                        inumber, DT_UNKNOWN);
                                 if (over) {
                                         dir_put_page(page);
                                         goto done;
@@ -156,23 +169,34 @@ minix_dirent *minix_find_entry(struct dentry *dentry, struct page **res_page)
         unsigned long n;
         unsigned long npages = dir_pages(dir);
         struct page *page = NULL;
-        struct minix_dir_entry *de;
+        char *p;
 
+        char *namx;
+        __u32 inumber;
         *res_page = NULL;
 
         for (n = 0; n < npages; n++) {
-                char *kaddr;
+                char *kaddr, *limit;
+
                 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)
+                limit = kaddr + minix_last_byte(dir, n) - sbi->s_dirsize;
+                for (p = kaddr; p <= limit; p = minix_next_entry(p, sbi)) {
+                        if (sbi->s_version == MINIX_V3) {
+                                minix3_dirent *de3 = (minix3_dirent *)p;
+                                namx = de3->name;
+                                inumber = de3->inode;
+                        } else {
+                                minix_dirent *de = (minix_dirent *)p;
+                                namx = de->name;
+                                inumber = de->inode;
+                        }
+                        if (!inumber)
                                 continue;
-                        if (namecompare(namelen,sbi->s_namelen,name,de->name))
+                        if (namecompare(namelen, sbi->s_namelen, name, namx))
                                 goto found;
                 }
                 dir_put_page(page);
@@ -181,7 +205,7 @@ minix_dirent *minix_find_entry(struct dentry *dentry, struct page **res_page)
 
 found:
         *res_page = page;
-        return de;
+        return (minix_dirent *)p;
 }
 
 int minix_add_link(struct dentry *dentry, struct inode *inode)
@@ -192,12 +216,15 @@ int minix_add_link(struct dentry *dentry, struct inode *inode)
         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;
+        char *kaddr, *p;
+        minix_dirent *de;
+        minix3_dirent *de3;
         unsigned from, to;
         int err;
+        char *namx = NULL;
+        __u32 inumber;
 
         /*
          * We take care of directory expansion in the same loop
@@ -205,7 +232,7 @@ int minix_add_link(struct dentry *dentry, struct inode *inode)
          * to protect that region.
          */
         for (n = 0; n <= npages; n++) {
-                char *dir_end;
+                char *limit, *dir_end;
 
                 page = dir_get_page(dir, n);
                 err = PTR_ERR(page);
@@ -214,20 +241,30 @@ int minix_add_link(struct dentry *dentry, struct inode *inode)
                 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) {
+                limit = kaddr + PAGE_CACHE_SIZE - sbi->s_dirsize;
+                for (p = kaddr; p <= limit; p = minix_next_entry(p, sbi)) {
+                        de = (minix_dirent *)p;
+                        de3 = (minix3_dirent *)p;
+                        if (sbi->s_version == MINIX_V3) {
+                                namx = de3->name;
+                                inumber = de3->inode;
+                        } else {
+                                namx = de->name;
+                                inumber = de->inode;
+                        }
+                        if (p == dir_end) {
                                 /* We hit i_size */
-                                de->inode = 0;
+                                if (sbi->s_version == MINIX_V3)
+                                        de3->inode = 0;
+                                else
+                                        de->inode = 0;
                                 goto got_it;
                         }
-                        if (!de->inode)
+                        if (!inumber)
                                 goto got_it;
                         err = -EEXIST;
-                        if (namecompare(namelen,sbi->s_namelen,name,de->name))
+                        if (namecompare(namelen, sbi->s_namelen, name, namx))
                                 goto out_unlock;
-                        de = minix_next_entry(de, sbi);
                 }
                 unlock_page(page);
                 dir_put_page(page);
@@ -236,14 +273,19 @@ int minix_add_link(struct dentry *dentry, struct inode *inode)
         return -EINVAL;
 
 got_it:
-        from = (char*)de - (char*)page_address(page);
+        from = p - (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;
+        memcpy (namx, name, namelen);
+        if (sbi->s_version == MINIX_V3) {
+                memset (namx + namelen, 0, sbi->s_dirsize - namelen - 4);
+                de3->inode = inode->i_ino;
+        } else {
+                memset (namx + 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);
@@ -283,8 +325,7 @@ 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;
+        struct minix_sb_info *sbi = minix_sb(inode->i_sb);
         char *kaddr;
         int err;
 
@@ -299,12 +340,23 @@ int minix_make_empty(struct inode *inode, struct inode *dir)
         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,"..");
+        if (sbi->s_version == MINIX_V3) {
+                minix3_dirent *de3 = (minix3_dirent *)kaddr;
+
+                de3->inode = inode->i_ino;
+                strcpy(de3->name, ".");
+                de3 = minix_next_entry(de3, sbi);
+                de3->inode = dir->i_ino;
+                strcpy(de3->name, "..");
+        } else {
+                minix_dirent *de = (minix_dirent *)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);
@@ -321,33 +373,41 @@ 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);
+        char *name;
+        __u32 inumber;
 
         for (i = 0; i < npages; i++) {
-                char *kaddr;
-                minix_dirent * de;
-                page = dir_get_page(inode, i);
+                char *p, *kaddr, *limit;
 
+                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;
+                limit = kaddr + minix_last_byte(inode, i) - sbi->s_dirsize;
+                for (p = kaddr; p <= limit; p = minix_next_entry(p, sbi)) {
+                        if (sbi->s_version == MINIX_V3) {
+                                minix3_dirent *de3 = (minix3_dirent *)p;
+                                name = de3->name;
+                                inumber = de3->inode;
+                        } else {
+                                minix_dirent *de = (minix_dirent *)p;
+                                name = de->name;
+                                inumber = de->inode;
+                        }
 
-                while ((char *)de <= kaddr) {
-                        if (de->inode != 0) {
+                        if (inumber != 0) {
                                 /* check for . and .. */
-                                if (de->name[0] != '.')
+                                if (name[0] != '.')
                                         goto not_empty;
-                                if (!de->name[1]) {
-                                        if (de->inode != inode->i_ino)
+                                if (!name[1]) {
+                                        if (inumber != inode->i_ino)
                                                 goto not_empty;
-                                } else if (de->name[1] != '.')
+                                } else if (name[1] != '.')
                                         goto not_empty;
-                                else if (de->name[2])
+                                else if (name[2])
                                         goto not_empty;
                         }
-                        de = minix_next_entry(de, sbi);
                 }
                 dir_put_page(page);
         }
diff --git a/fs/minix/inode.c b/fs/minix/inode.c
index 629e09b38c5c..9ddfcc148287 100644
--- a/fs/minix/inode.c
+++ b/fs/minix/inode.c
@@ -7,6 +7,7 @@
  *      Minix V2 fs support.
  *
  *  Modified for 680x0 by Andreas Schwab
+ *  Updated to filesystem version 3 by Daniel Aragones
  */
 
 #include <linux/module.h>
@@ -36,7 +37,8 @@ static void minix_put_super(struct super_block *sb)
         struct minix_sb_info *sbi = minix_sb(sb);
 
         if (!(sb->s_flags & MS_RDONLY)) {
-                sbi->s_ms->s_state = sbi->s_mount_state;
+                if (sbi->s_version != MINIX_V3)  /* s_state is now out from V3 sb */
+                        sbi->s_ms->s_state = sbi->s_mount_state;
                 mark_buffer_dirty(sbi->s_sbh);
         }
         for (i = 0; i < sbi->s_imap_blocks; i++)
@@ -117,12 +119,17 @@ static int minix_remount (struct super_block * sb, int * flags, char * data)
                     !(sbi->s_mount_state & MINIX_VALID_FS))
                         return 0;
                 /* Mounting a rw partition read-only. */
-                ms->s_state = sbi->s_mount_state;
+                if (sbi->s_version != MINIX_V3)
+                        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;
+                if (sbi->s_version != MINIX_V3) {
+                        sbi->s_mount_state = ms->s_state;
+                        ms->s_state &= ~MINIX_VALID_FS;
+                } else {
+                        sbi->s_mount_state = MINIX_VALID_FS;
+                }
                 mark_buffer_dirty(sbi->s_sbh);
 
                 if (!(sbi->s_mount_state & MINIX_VALID_FS))
@@ -140,7 +147,8 @@ 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 minix3_super_block *m3s = NULL;
+        unsigned long i, block;
         struct inode *root_inode;
         struct minix_sb_info *sbi;
 
@@ -192,6 +200,22 @@ static int minix_fill_super(struct super_block *s, void *data, int silent)
                 sbi->s_dirsize = 32;
                 sbi->s_namelen = 30;
                 sbi->s_link_max = MINIX2_LINK_MAX;
+        } else if ( *(__u16 *)(bh->b_data + 24) == MINIX3_SUPER_MAGIC) {
+                m3s = (struct minix3_super_block *) bh->b_data;
+                s->s_magic = m3s->s_magic;
+                sbi->s_imap_blocks = m3s->s_imap_blocks;
+                sbi->s_zmap_blocks = m3s->s_zmap_blocks;
+                sbi->s_firstdatazone = m3s->s_firstdatazone;
+                sbi->s_log_zone_size = m3s->s_log_zone_size;
+                sbi->s_max_size = m3s->s_max_size;
+                sbi->s_ninodes = m3s->s_ninodes;
+                sbi->s_nzones = m3s->s_zones;
+                sbi->s_dirsize = 64;
+                sbi->s_namelen = 60;
+                sbi->s_version = MINIX_V3;
+                sbi->s_link_max = MINIX2_LINK_MAX;
+                sbi->s_mount_state = MINIX_VALID_FS;
+                sb_set_blocksize(s, m3s->s_blocksize);
         } else
                 goto out_no_fs;
 
@@ -236,7 +260,8 @@ static int minix_fill_super(struct super_block *s, void *data, int silent)
                 s->s_root->d_op = &minix_dentry_operations;
 
         if (!(s->s_flags & MS_RDONLY)) {
-                ms->s_state &= ~MINIX_VALID_FS;
+                if (sbi->s_version != MINIX_V3) /* s_state is now out from V3 sb */
+                        ms->s_state &= ~MINIX_VALID_FS;
                 mark_buffer_dirty(bh);
         }
         if (!(sbi->s_mount_state & MINIX_VALID_FS))
@@ -278,8 +303,8 @@ out_illegal_sb:
 
 out_no_fs:
         if (!silent)
-                printk("VFS: Can't find a Minix or Minix V2 filesystem "
-                        "on device %s\n", s->s_id);
+                printk("VFS: Can't find a Minix filesystem V1 | V2 | V3 "
+                       "on device %s.\n", s->s_id);
 out_release:
         brelse(bh);
         goto out;
@@ -537,12 +562,14 @@ int minix_sync_inode(struct inode * inode)
 
 int minix_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat)
 {
+        struct inode *dir = dentry->d_parent->d_inode;
+        struct super_block *sb = dir->i_sb;
         generic_fillattr(dentry->d_inode, stat);
         if (INODE_VERSION(dentry->d_inode) == MINIX_V1)
-                stat->blocks = (BLOCK_SIZE / 512) * V1_minix_blocks(stat->size);
+                stat->blocks = (BLOCK_SIZE / 512) * V1_minix_blocks(stat->size, sb);
         else
-                stat->blocks = (BLOCK_SIZE / 512) * V2_minix_blocks(stat->size);
-        stat->blksize = BLOCK_SIZE;
+                stat->blocks = (sb->s_blocksize / 512) * V2_minix_blocks(stat->size, sb);
+        stat->blksize = sb->s_blocksize;
         return 0;
 }
 
diff --git a/fs/minix/itree_common.c b/fs/minix/itree_common.c
index 429baf8de105..a731cabf1540 100644
--- a/fs/minix/itree_common.c
+++ b/fs/minix/itree_common.c
@@ -23,7 +23,7 @@ static inline int verify_chain(Indirect *from, Indirect *to)
 
 static inline block_t *block_end(struct buffer_head *bh)
 {
-        return (block_t *)((char*)bh->b_data + BLOCK_SIZE);
+        return (block_t *)((char*)bh->b_data + bh->b_size);
 }
 
 static inline Indirect *get_branch(struct inode *inode,
@@ -85,7 +85,7 @@ static int alloc_branch(struct inode *inode,
                 branch[n].key = cpu_to_block(nr);
                 bh = sb_getblk(inode->i_sb, parent);
                 lock_buffer(bh);
-                memset(bh->b_data, 0, BLOCK_SIZE);
+                memset(bh->b_data, 0, bh->b_size);
                 branch[n].bh = bh;
                 branch[n].p = (block_t*) bh->b_data + offsets[n];
                 *branch[n].p = branch[n].key;
@@ -292,6 +292,7 @@ static void free_branches(struct inode *inode, block_t *p, block_t *q, int depth
 
 static inline void truncate (struct inode * inode)
 {
+        struct super_block *sb = inode->i_sb;
         block_t *idata = i_data(inode);
         int offsets[DEPTH];
         Indirect chain[DEPTH];
@@ -301,7 +302,7 @@ static inline void truncate (struct inode * inode)
         int first_whole;
         long iblock;
 
-        iblock = (inode->i_size + BLOCK_SIZE-1) >> 10;
+        iblock = (inode->i_size + sb->s_blocksize -1) >> sb->s_blocksize_bits;
         block_truncate_page(inode->i_mapping, inode->i_size, get_block);
 
         n = block_to_path(inode, iblock, offsets);
@@ -346,15 +347,16 @@ do_indirects:
         mark_inode_dirty(inode);
 }
 
-static inline unsigned nblocks(loff_t size)
+static inline unsigned nblocks(loff_t size, struct super_block *sb)
 {
+        int k = sb->s_blocksize_bits - 10;
         unsigned blocks, res, direct = DIRECT, i = DEPTH;
-        blocks = (size + BLOCK_SIZE - 1) >> BLOCK_SIZE_BITS;
+        blocks = (size + sb->s_blocksize - 1) >> (BLOCK_SIZE_BITS + k);
         res = blocks;
         while (--i && blocks > direct) {
                 blocks -= direct;
-                blocks += BLOCK_SIZE/sizeof(block_t) - 1;
-                blocks /= BLOCK_SIZE/sizeof(block_t);
+                blocks += sb->s_blocksize/sizeof(block_t) - 1;
+                blocks /= sb->s_blocksize/sizeof(block_t);
                 res += blocks;
                 direct = 1;
         }
diff --git a/fs/minix/itree_v1.c b/fs/minix/itree_v1.c
index 656b1347a25b..1a5f3bf0bcec 100644
--- a/fs/minix/itree_v1.c
+++ b/fs/minix/itree_v1.c
@@ -55,7 +55,7 @@ void V1_minix_truncate(struct inode * inode)
         truncate(inode);
 }
 
-unsigned V1_minix_blocks(loff_t size)
+unsigned V1_minix_blocks(loff_t size, struct super_block *sb)
 {
-        return nblocks(size);
+        return nblocks(size, sb);
 }
diff --git a/fs/minix/itree_v2.c b/fs/minix/itree_v2.c
index 9adcdc754e0f..ad8f0dec4ef4 100644
--- a/fs/minix/itree_v2.c
+++ b/fs/minix/itree_v2.c
@@ -23,10 +23,11 @@ static inline block_t *i_data(struct inode *inode)
 static int block_to_path(struct inode * inode, long block, int offsets[DEPTH])
 {
         int n = 0;
+        struct super_block *sb = inode->i_sb;
 
         if (block < 0) {
                 printk("minix_bmap: block<0\n");
-        } else if (block >= (minix_sb(inode->i_sb)->s_max_size/BLOCK_SIZE)) {
+        } else if (block >= (minix_sb(inode->i_sb)->s_max_size/sb->s_blocksize)) {
                 printk("minix_bmap: block>big\n");
         } else if (block < 7) {
                 offsets[n++] = block;
@@ -60,7 +61,7 @@ void V2_minix_truncate(struct inode * inode)
         truncate(inode);
 }
 
-unsigned V2_minix_blocks(loff_t size)
+unsigned V2_minix_blocks(loff_t size, struct super_block *sb)
 {
-        return nblocks(size);
+        return nblocks(size, sb);
 }
diff --git a/fs/minix/minix.h b/fs/minix/minix.h
index c55b77cdcc8e..e016ee91d936 100644
--- a/fs/minix/minix.h
+++ b/fs/minix/minix.h
@@ -7,11 +7,10 @@
  * truncated. Else they will be disallowed (ENAMETOOLONG).
  */
 #define NO_TRUNCATE 1
-
 #define INODE_VERSION(inode)    minix_sb(inode->i_sb)->s_version
-
 #define MINIX_V1                0x0001          /* original minix fs */
 #define MINIX_V2                0x0002          /* minix V2 fs */
+#define MINIX_V3                0x0003          /* minix V3 fs */
 
 /*
  * minix fs inode data in memory
@@ -52,12 +51,10 @@ extern struct inode * minix_new_inode(const struct inode * dir, int * error);
 extern void minix_free_inode(struct inode * inode);
 extern unsigned long minix_count_free_inodes(struct minix_sb_info *sbi);
 extern int minix_new_block(struct inode * inode);
-extern void minix_free_block(struct inode * inode, int block);
+extern void minix_free_block(struct inode *inode, unsigned long block);
 extern unsigned long minix_count_free_blocks(struct minix_sb_info *sbi);
-
 extern int minix_getattr(struct vfsmount *, struct dentry *, struct kstat *);
 
-extern void V2_minix_truncate(struct inode *);
 extern void V1_minix_truncate(struct inode *);
 extern void V2_minix_truncate(struct inode *);
 extern void minix_truncate(struct inode *);
@@ -65,8 +62,8 @@ extern int minix_sync_inode(struct inode *);
 extern void minix_set_inode(struct inode *, dev_t);
 extern int V1_minix_get_block(struct inode *, long, struct buffer_head *, int);
 extern int V2_minix_get_block(struct inode *, long, struct buffer_head *, int);
-extern unsigned V1_minix_blocks(loff_t);
-extern unsigned V2_minix_blocks(loff_t);
+extern unsigned V1_minix_blocks(loff_t, struct super_block *);
+extern unsigned V2_minix_blocks(loff_t, struct super_block *);
 
 extern struct minix_dir_entry *minix_find_entry(struct dentry*, struct page**);
 extern int minix_add_link(struct dentry*, struct inode*);
@@ -76,7 +73,6 @@ extern int minix_empty_dir(struct inode*);
 extern void minix_set_link(struct minix_dir_entry*, struct page*, struct inode*);
 extern struct minix_dir_entry *minix_dotdot(struct inode*, struct page**);
 extern ino_t minix_inode_by_name(struct dentry*);
-
 extern int minix_sync_file(struct file *, struct dentry *, int);
 
 extern struct inode_operations minix_file_inode_operations;
diff --git a/include/linux/magic.h b/include/linux/magic.h
index b78bbf42135a..b32c8a97fcec 100644
--- a/include/linux/magic.h
+++ b/include/linux/magic.h
@@ -18,6 +18,7 @@
 #define MINIX_SUPER_MAGIC2      0x138F          /* minix fs, 30 char names */
 #define MINIX2_SUPER_MAGIC      0x2468          /* minix V2 fs */
 #define MINIX2_SUPER_MAGIC2     0x2478          /* minix V2 fs, 30 char names */
+#define MINIX3_SUPER_MAGIC      0x4d5a          /* minix V3 fs */
 
 #define MSDOS_SUPER_MAGIC       0x4d44          /* MD */
 #define NCP_SUPER_MAGIC         0x564c          /* Guess, what 0x564c is :-) */
diff --git a/include/linux/minix_fs.h b/include/linux/minix_fs.h
index 916e8f72c63d..9850d513ff60 100644
--- a/include/linux/minix_fs.h
+++ b/include/linux/minix_fs.h
@@ -25,7 +25,6 @@
 #define MINIX_ERROR_FS          0x0002          /* fs has errors. */
 
 #define MINIX_INODES_PER_BLOCK ((BLOCK_SIZE)/(sizeof (struct minix_inode)))
-#define MINIX2_INODES_PER_BLOCK ((BLOCK_SIZE)/(sizeof (struct minix2_inode)))
 
 /*
  * This is the original minix inode layout on disk.
@@ -75,9 +74,33 @@ struct minix_super_block {
         __u32 s_zones;
 };
 
+/*
+ * V3 minix super-block data on disk
+ */
+struct minix3_super_block {
+        __u16 s_ninodes;
+        __u16 s_nzones;
+        __u16 s_pad0;
+        __u16 s_imap_blocks;
+        __u16 s_zmap_blocks;
+        __u16 s_firstdatazone;
+        __u16 s_log_zone_size;
+        __u16 s_pad1;
+        __u32 s_max_size;
+        __u32 s_zones;
+        __u16 s_magic;
+        __u16 s_pad2;
+        __u16 s_blocksize;
+        __u8  s_disk_version;
+};
+
 struct minix_dir_entry {
         __u16 inode;
         char name[0];
 };
 
+struct minix3_dir_entry {
+        __u32 inode;
+        char name[0];
+};
 #endif