[PATCH] ext4: 64bit metadata

In-kernel super block changes to support >32 bit free blocks numbers.

Signed-off-by: Laurent Vivier <Laurent.Vivier@bull.net>
Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com>
Signed-off-by: Alexandre Ratchov <alexandre.ratchov@bull.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

6 files changed, 201 insertions, 97 deletions

diff --git a/fs/ext4/balloc.c b/fs/ext4/balloc.c
index aa33ff271fa9..6887151ccc47 100644
--- a/fs/ext4/balloc.c
+++ b/fs/ext4/balloc.c
@@ -99,12 +99,13 @@ read_block_bitmap(struct super_block *sb, unsigned int block_group)
         desc = ext4_get_group_desc (sb, block_group, NULL);
         if (!desc)
                 goto error_out;
-        bh = sb_bread(sb, le32_to_cpu(desc->bg_block_bitmap));
+        bh = sb_bread(sb, ext4_block_bitmap(desc));
         if (!bh)
                 ext4_error (sb, "read_block_bitmap",
                             "Cannot read block bitmap - "
-                            "block_group = %d, block_bitmap = %u",
-                            block_group, le32_to_cpu(desc->bg_block_bitmap));
+                            "block_group = %d, block_bitmap = "E3FSBLK,
+                            block_group,
+                            ext4_block_bitmap(desc));
 error_out:
         return bh;
 }
@@ -432,14 +433,14 @@ void ext4_free_blocks_sb(handle_t *handle, struct super_block *sb,
         es = sbi->s_es;
         if (block < le32_to_cpu(es->s_first_data_block) ||
             block + count < block ||
-            block + count > le32_to_cpu(es->s_blocks_count)) {
+            block + count > ext4_blocks_count(es)) {
                 ext4_error (sb, "ext4_free_blocks",
                             "Freeing blocks not in datazone - "
                             "block = "E3FSBLK", count = %lu", block, count);
                 goto error_return;
         }
 
-        ext4_debug ("freeing block(s) %lu-%lu\n", block, block + count - 1);
+        ext4_debug ("freeing block(s) %llu-%llu\n", block, block + count - 1);
 
 do_more:
         overflow = 0;
@@ -460,12 +461,11 @@ do_more:
         if (!desc)
                 goto error_return;
 
-        if (in_range (le32_to_cpu(desc->bg_block_bitmap), block, count) ||
-            in_range (le32_to_cpu(desc->bg_inode_bitmap), block, count) ||
-            in_range (block, le32_to_cpu(desc->bg_inode_table),
-                      sbi->s_itb_per_group) ||
-            in_range (block + count - 1, le32_to_cpu(desc->bg_inode_table),
-                      sbi->s_itb_per_group))
+        if (in_range(ext4_block_bitmap(desc), block, count) ||
+            in_range(ext4_inode_bitmap(desc), block, count) ||
+            in_range(block, ext4_inode_table(desc), sbi->s_itb_per_group) ||
+            in_range(block + count - 1, ext4_inode_table(desc),
+                     sbi->s_itb_per_group))
                 ext4_error (sb, "ext4_free_blocks",
                             "Freeing blocks in system zones - "
                             "Block = "E3FSBLK", count = %lu",
@@ -552,8 +552,8 @@ do_more:
                                                 bit + i, bitmap_bh->b_data)) {
                         jbd_unlock_bh_state(bitmap_bh);
                         ext4_error(sb, __FUNCTION__,
-                                "bit already cleared for block "E3FSBLK,
-                                 block + i);
+                                   "bit already cleared for block "E3FSBLK,
+                                   (ext4_fsblk_t)(block + i));
                         jbd_lock_bh_state(bitmap_bh);
                         BUFFER_TRACE(bitmap_bh, "bit already cleared");
                 } else {
@@ -1351,7 +1351,7 @@ static int ext4_has_free_blocks(struct ext4_sb_info *sbi)
         ext4_fsblk_t free_blocks, root_blocks;
 
         free_blocks = percpu_counter_read_positive(&sbi->s_freeblocks_counter);
-        root_blocks = le32_to_cpu(sbi->s_es->s_r_blocks_count);
+        root_blocks = ext4_r_blocks_count(sbi->s_es);
         if (free_blocks < root_blocks + 1 && !capable(CAP_SYS_RESOURCE) &&
                 sbi->s_resuid != current->fsuid &&
                 (sbi->s_resgid == 0 || !in_group_p (sbi->s_resgid))) {
@@ -1462,7 +1462,7 @@ ext4_fsblk_t ext4_new_blocks(handle_t *handle, struct inode *inode,
          * First, test whether the goal block is free.
          */
         if (goal < le32_to_cpu(es->s_first_data_block) ||
-            goal >= le32_to_cpu(es->s_blocks_count))
+            goal >= ext4_blocks_count(es))
                 goal = le32_to_cpu(es->s_first_data_block);
         ext4_get_group_no_and_offset(sb, goal, &group_no, &grp_target_blk);
         goal_group = group_no;
@@ -1561,12 +1561,12 @@ allocated:
 
         ret_block = grp_alloc_blk + ext4_group_first_block_no(sb, group_no);
 
-        if (in_range(le32_to_cpu(gdp->bg_block_bitmap), ret_block, num) ||
-            in_range(le32_to_cpu(gdp->bg_inode_bitmap), ret_block, num) ||
-            in_range(ret_block, le32_to_cpu(gdp->bg_inode_table),
-                      EXT4_SB(sb)->s_itb_per_group) ||
-            in_range(ret_block + num - 1, le32_to_cpu(gdp->bg_inode_table),
-                      EXT4_SB(sb)->s_itb_per_group))
+        if (in_range(ext4_block_bitmap(gdp), ret_block, num) ||
+            in_range(ext4_block_bitmap(gdp), ret_block, num) ||
+            in_range(ret_block, ext4_inode_table(gdp),
+                     EXT4_SB(sb)->s_itb_per_group) ||
+            in_range(ret_block + num - 1, ext4_inode_table(gdp),
+                     EXT4_SB(sb)->s_itb_per_group))
                 ext4_error(sb, "ext4_new_block",
                             "Allocating block in system zone - "
                             "blocks from "E3FSBLK", length %lu",
@@ -1604,11 +1604,11 @@ allocated:
         jbd_unlock_bh_state(bitmap_bh);
 #endif
 
-        if (ret_block + num - 1 >= le32_to_cpu(es->s_blocks_count)) {
+        if (ret_block + num - 1 >= ext4_blocks_count(es)) {
                 ext4_error(sb, "ext4_new_block",
-                            "block("E3FSBLK") >= blocks count(%d) - "
+                            "block("E3FSBLK") >= blocks count("E3FSBLK") - "
                             "block_group = %lu, es == %p ", ret_block,
-                        le32_to_cpu(es->s_blocks_count), group_no, es);
+                        ext4_blocks_count(es), group_no, es);
                 goto out;
         }
 
@@ -1707,7 +1707,7 @@ ext4_fsblk_t ext4_count_free_blocks(struct super_block *sb)
         brelse(bitmap_bh);
         printk("ext4_count_free_blocks: stored = "E3FSBLK
                 ", computed = "E3FSBLK", "E3FSBLK"\n",
-               le32_to_cpu(es->s_free_blocks_count),
+               EXT4_FREE_BLOCKS_COUNT(es),
                 desc_count, bitmap_count);
         return bitmap_count;
 #else
diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c
index 94e1bb4abe31..959b7fa8f5db 100644
--- a/fs/ext4/ialloc.c
+++ b/fs/ext4/ialloc.c
@@ -60,12 +60,12 @@ read_inode_bitmap(struct super_block * sb, unsigned long block_group)
         if (!desc)
                 goto error_out;
 
-        bh = sb_bread(sb, le32_to_cpu(desc->bg_inode_bitmap));
+        bh = sb_bread(sb, ext4_inode_bitmap(desc));
         if (!bh)
                 ext4_error(sb, "read_inode_bitmap",
                             "Cannot read inode bitmap - "
-                            "block_group = %lu, inode_bitmap = %u",
-                            block_group, le32_to_cpu(desc->bg_inode_bitmap));
+                            "block_group = %lu, inode_bitmap = %llu",
+                            block_group, ext4_inode_bitmap(desc));
 error_out:
         return bh;
 }
@@ -304,7 +304,7 @@ static int find_group_orlov(struct super_block *sb, struct inode *parent)
                 goto fallback;
         }
 
-        blocks_per_dir = le32_to_cpu(es->s_blocks_count) - freeb;
+        blocks_per_dir = ext4_blocks_count(es) - freeb;
         sector_div(blocks_per_dir, ndirs);
 
         max_dirs = ndirs / ngroups + inodes_per_group / 16;
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 9db8cff3baa4..effc38afebe3 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -2438,8 +2438,8 @@ static ext4_fsblk_t ext4_get_inode_block(struct super_block *sb,
          */
         offset = ((ino - 1) % EXT4_INODES_PER_GROUP(sb)) *
                 EXT4_INODE_SIZE(sb);
-        block = le32_to_cpu(gdp[desc].bg_inode_table) +
-                (offset >> EXT4_BLOCK_SIZE_BITS(sb));
+        block = ext4_inode_table(gdp + desc) +
+                        (offset >> EXT4_BLOCK_SIZE_BITS(sb));
 
         iloc->block_group = block_group;
         iloc->offset = offset & (EXT4_BLOCK_SIZE(sb) - 1);
@@ -2506,7 +2506,7 @@ static int __ext4_get_inode_loc(struct inode *inode,
                                 goto make_io;
 
                         bitmap_bh = sb_getblk(inode->i_sb,
-                                        le32_to_cpu(desc->bg_inode_bitmap));
+                                ext4_inode_bitmap(desc));
                         if (!bitmap_bh)
                                 goto make_io;
 
diff --git a/fs/ext4/resize.c b/fs/ext4/resize.c
index c60bfed5f5e7..3dbf91b82202 100644
--- a/fs/ext4/resize.c
+++ b/fs/ext4/resize.c
@@ -27,7 +27,7 @@ static int verify_group_input(struct super_block *sb,
 {
         struct ext4_sb_info *sbi = EXT4_SB(sb);
         struct ext4_super_block *es = sbi->s_es;
-        ext4_fsblk_t start = le32_to_cpu(es->s_blocks_count);
+        ext4_fsblk_t start = ext4_blocks_count(es);
         ext4_fsblk_t end = start + input->blocks_count;
         unsigned group = input->group;
         ext4_fsblk_t itend = input->inode_table + sbi->s_itb_per_group;
@@ -68,43 +68,43 @@ static int verify_group_input(struct super_block *sb,
                              end - 1);
         else if (outside(input->block_bitmap, start, end))
                 ext4_warning(sb, __FUNCTION__,
-                             "Block bitmap not in group (block %u)",
+                             "Block bitmap not in group (block %llu)",
                              input->block_bitmap);
         else if (outside(input->inode_bitmap, start, end))
                 ext4_warning(sb, __FUNCTION__,
-                             "Inode bitmap not in group (block %u)",
+                             "Inode bitmap not in group (block %llu)",
                              input->inode_bitmap);
         else if (outside(input->inode_table, start, end) ||
                  outside(itend - 1, start, end))
                 ext4_warning(sb, __FUNCTION__,
-                             "Inode table not in group (blocks %u-"E3FSBLK")",
+                             "Inode table not in group (blocks %llu-%llu)",
                              input->inode_table, itend - 1);
         else if (input->inode_bitmap == input->block_bitmap)
                 ext4_warning(sb, __FUNCTION__,
-                             "Block bitmap same as inode bitmap (%u)",
+                             "Block bitmap same as inode bitmap (%llu)",
                              input->block_bitmap);
         else if (inside(input->block_bitmap, input->inode_table, itend))
                 ext4_warning(sb, __FUNCTION__,
-                             "Block bitmap (%u) in inode table (%u-"E3FSBLK")",
+                             "Block bitmap (%llu) in inode table (%llu-%llu)",
                              input->block_bitmap, input->inode_table, itend-1);
         else if (inside(input->inode_bitmap, input->inode_table, itend))
                 ext4_warning(sb, __FUNCTION__,
-                             "Inode bitmap (%u) in inode table (%u-"E3FSBLK")",
+                             "Inode bitmap (%llu) in inode table (%llu-%llu)",
                              input->inode_bitmap, input->inode_table, itend-1);
         else if (inside(input->block_bitmap, start, metaend))
                 ext4_warning(sb, __FUNCTION__,
-                             "Block bitmap (%u) in GDT table"
+                             "Block bitmap (%llu) in GDT table"
                              " ("E3FSBLK"-"E3FSBLK")",
                              input->block_bitmap, start, metaend - 1);
         else if (inside(input->inode_bitmap, start, metaend))
                 ext4_warning(sb, __FUNCTION__,
-                             "Inode bitmap (%u) in GDT table"
+                             "Inode bitmap (%llu) in GDT table"
                              " ("E3FSBLK"-"E3FSBLK")",
                              input->inode_bitmap, start, metaend - 1);
         else if (inside(input->inode_table, start, metaend) ||
                  inside(itend - 1, start, metaend))
                 ext4_warning(sb, __FUNCTION__,
-                             "Inode table (%u-"E3FSBLK") overlaps"
+                             "Inode table ("E3FSBLK"-"E3FSBLK") overlaps"
                              "GDT table ("E3FSBLK"-"E3FSBLK")",
                              input->inode_table, itend - 1, start, metaend - 1);
         else
@@ -286,6 +286,7 @@ exit_journal:
         return err;
 }
 
+
 /*
  * Iterate through the groups which hold BACKUP superblock/GDT copies in an
  * ext4 filesystem.  The counters should be initialized to 1, 5, and 7 before
@@ -340,12 +341,15 @@ static int verify_reserved_gdb(struct super_block *sb,
         int gdbackups = 0;
 
         while ((grp = ext4_list_backups(sb, &three, &five, &seven)) < end) {
-                if (le32_to_cpu(*p++) != grp * EXT4_BLOCKS_PER_GROUP(sb) + blk){
+                if (le32_to_cpu(*p++) !=
+                    grp * EXT4_BLOCKS_PER_GROUP(sb) + blk){
                         ext4_warning(sb, __FUNCTION__,
                                      "reserved GDT "E3FSBLK
                                      " missing grp %d ("E3FSBLK")",
                                      blk, grp,
-                                     grp * EXT4_BLOCKS_PER_GROUP(sb) + blk);
+                                     grp *
+                                     (ext4_fsblk_t)EXT4_BLOCKS_PER_GROUP(sb) +
+                                     blk);
                         return -EINVAL;
                 }
                 if (++gdbackups > EXT4_ADDR_PER_BLOCK(sb))
@@ -731,8 +735,8 @@ int ext4_group_add(struct super_block *sb, struct ext4_new_group_data *input)
                 return -EPERM;
         }
 
-        if (le32_to_cpu(es->s_blocks_count) + input->blocks_count <
-            le32_to_cpu(es->s_blocks_count)) {
+        if (ext4_blocks_count(es) + input->blocks_count <
+            ext4_blocks_count(es)) {
                 ext4_warning(sb, __FUNCTION__, "blocks_count overflow\n");
                 return -EINVAL;
         }
@@ -830,9 +834,9 @@ int ext4_group_add(struct super_block *sb, struct ext4_new_group_data *input)
         /* Update group descriptor block for new group */
         gdp = (struct ext4_group_desc *)primary->b_data + gdb_off;
 
-        gdp->bg_block_bitmap = cpu_to_le32(input->block_bitmap);
-        gdp->bg_inode_bitmap = cpu_to_le32(input->inode_bitmap);
-        gdp->bg_inode_table = cpu_to_le32(input->inode_table);
+        ext4_block_bitmap_set(gdp, input->block_bitmap); /* LV FIXME */
+        ext4_inode_bitmap_set(gdp, input->inode_bitmap); /* LV FIXME */
+        ext4_inode_table_set(gdp, input->inode_table); /* LV FIXME */
         gdp->bg_free_blocks_count = cpu_to_le16(input->free_blocks_count);
         gdp->bg_free_inodes_count = cpu_to_le16(EXT4_INODES_PER_GROUP(sb));
 
@@ -846,7 +850,7 @@ int ext4_group_add(struct super_block *sb, struct ext4_new_group_data *input)
          * blocks/inodes before the group is live won't actually let us
          * allocate the new space yet.
          */
-        es->s_blocks_count = cpu_to_le32(le32_to_cpu(es->s_blocks_count) +
+        ext4_blocks_count_set(es, ext4_blocks_count(es) +
                 input->blocks_count);
         es->s_inodes_count = cpu_to_le32(le32_to_cpu(es->s_inodes_count) +
                 EXT4_INODES_PER_GROUP(sb));
@@ -882,7 +886,7 @@ int ext4_group_add(struct super_block *sb, struct ext4_new_group_data *input)
 
         /* Update the reserved block counts only once the new group is
          * active. */
-        es->s_r_blocks_count = cpu_to_le32(le32_to_cpu(es->s_r_blocks_count) +
+        ext4_r_blocks_count_set(es, ext4_r_blocks_count(es) +
                 input->reserved_blocks);
 
         /* Update the free space counts */
@@ -933,7 +937,7 @@ int ext4_group_extend(struct super_block *sb, struct ext4_super_block *es,
         /* We don't need to worry about locking wrt other resizers just
          * yet: we're going to revalidate es->s_blocks_count after
          * taking lock_super() below. */
-        o_blocks_count = le32_to_cpu(es->s_blocks_count);
+        o_blocks_count = ext4_blocks_count(es);
         o_groups_count = EXT4_SB(sb)->s_groups_count;
 
         if (test_opt(sb, DEBUG))
@@ -1004,7 +1008,7 @@ int ext4_group_extend(struct super_block *sb, struct ext4_super_block *es,
         }
 
         lock_super(sb);
-        if (o_blocks_count != le32_to_cpu(es->s_blocks_count)) {
+        if (o_blocks_count != ext4_blocks_count(es)) {
                 ext4_warning(sb, __FUNCTION__,
                              "multiple resizers run on filesystem!");
                 unlock_super(sb);
@@ -1020,7 +1024,7 @@ int ext4_group_extend(struct super_block *sb, struct ext4_super_block *es,
                 ext4_journal_stop(handle);
                 goto exit_put;
         }
-        es->s_blocks_count = cpu_to_le32(o_blocks_count + add);
+        ext4_blocks_count_set(es, o_blocks_count + add);
         ext4_journal_dirty_metadata(handle, EXT4_SB(sb)->s_sbh);
         sb->s_dirt = 1;
         unlock_super(sb);
@@ -1032,8 +1036,8 @@ int ext4_group_extend(struct super_block *sb, struct ext4_super_block *es,
         if ((err = ext4_journal_stop(handle)))
                 goto exit_put;
         if (test_opt(sb, DEBUG))
-                printk(KERN_DEBUG "EXT4-fs: extended group to %u blocks\n",
-                       le32_to_cpu(es->s_blocks_count));
+                printk(KERN_DEBUG "EXT4-fs: extended group to %llu blocks\n",
+                       ext4_blocks_count(es));
         update_backups(sb, EXT4_SB(sb)->s_sbh->b_blocknr, (char *)es,
                        sizeof(struct ext4_super_block));
 exit_put:
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 1d12e4f7d69f..b91dffd7a031 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -62,6 +62,43 @@ static void ext4_unlockfs(struct super_block *sb);
 static void ext4_write_super (struct super_block * sb);
 static void ext4_write_super_lockfs(struct super_block *sb);
 
+
+ext4_fsblk_t ext4_block_bitmap(struct ext4_group_desc *bg)
+{
+        return le32_to_cpu(bg->bg_block_bitmap) |
+                ((ext4_fsblk_t)le16_to_cpu(bg->bg_block_bitmap_hi) << 32);
+}
+
+ext4_fsblk_t ext4_inode_bitmap(struct ext4_group_desc *bg)
+{
+        return le32_to_cpu(bg->bg_inode_bitmap) |
+                ((ext4_fsblk_t)le16_to_cpu(bg->bg_inode_bitmap_hi) << 32);
+}
+
+ext4_fsblk_t ext4_inode_table(struct ext4_group_desc *bg)
+{
+        return le32_to_cpu(bg->bg_inode_table) |
+                ((ext4_fsblk_t)le16_to_cpu(bg->bg_inode_table_hi) << 32);
+}
+
+void ext4_block_bitmap_set(struct ext4_group_desc *bg, ext4_fsblk_t blk)
+{
+        bg->bg_block_bitmap = cpu_to_le32((u32)blk);
+        bg->bg_block_bitmap_hi = cpu_to_le16(blk >> 32);
+}
+
+void ext4_inode_bitmap_set(struct ext4_group_desc *bg, ext4_fsblk_t blk)
+{
+        bg->bg_inode_bitmap  = cpu_to_le32((u32)blk);
+        bg->bg_inode_bitmap_hi = cpu_to_le16(blk >> 32);
+}
+
+void ext4_inode_table_set(struct ext4_group_desc *bg, ext4_fsblk_t blk)
+{
+        bg->bg_inode_table = cpu_to_le32((u32)blk);
+        bg->bg_inode_table_hi = cpu_to_le16(blk >> 32);
+}
+
 /*
  * Wrappers for jbd2_journal_start/end.
  *
@@ -1182,6 +1219,9 @@ static int ext4_check_descriptors (struct super_block * sb)
         struct ext4_sb_info *sbi = EXT4_SB(sb);
         ext4_fsblk_t first_block = le32_to_cpu(sbi->s_es->s_first_data_block);
         ext4_fsblk_t last_block;
+        ext4_fsblk_t block_bitmap;
+        ext4_fsblk_t inode_bitmap;
+        ext4_fsblk_t inode_table;
         struct ext4_group_desc * gdp = NULL;
         int desc_block = 0;
         int i;
@@ -1191,7 +1231,7 @@ static int ext4_check_descriptors (struct super_block * sb)
         for (i = 0; i < sbi->s_groups_count; i++)
         {
                 if (i == sbi->s_groups_count - 1)
-                        last_block = le32_to_cpu(sbi->s_es->s_blocks_count) - 1;
+                        last_block = ext4_blocks_count(sbi->s_es) - 1;
                 else
                         last_block = first_block +
                                 (EXT4_BLOCKS_PER_GROUP(sb) - 1);
@@ -1199,42 +1239,39 @@ static int ext4_check_descriptors (struct super_block * sb)
                 if ((i % EXT4_DESC_PER_BLOCK(sb)) == 0)
                         gdp = (struct ext4_group_desc *)
                                         sbi->s_group_desc[desc_block++]->b_data;
-                if (le32_to_cpu(gdp->bg_block_bitmap) < first_block ||
-                    le32_to_cpu(gdp->bg_block_bitmap) > last_block)
+                block_bitmap = ext4_block_bitmap(gdp);
+                if (block_bitmap < first_block || block_bitmap > last_block)
                 {
                         ext4_error (sb, "ext4_check_descriptors",
                                     "Block bitmap for group %d"
-                                    " not in group (block %lu)!",
-                                    i, (unsigned long)
-                                        le32_to_cpu(gdp->bg_block_bitmap));
+                                    " not in group (block "E3FSBLK")!",
+                                    i, block_bitmap);
                         return 0;
                 }
-                if (le32_to_cpu(gdp->bg_inode_bitmap) < first_block ||
-                    le32_to_cpu(gdp->bg_inode_bitmap) > last_block)
+                inode_bitmap = ext4_inode_bitmap(gdp);
+                if (inode_bitmap < first_block || inode_bitmap > last_block)
                 {
                         ext4_error (sb, "ext4_check_descriptors",
                                     "Inode bitmap for group %d"
-                                    " not in group (block %lu)!",
-                                    i, (unsigned long)
-                                        le32_to_cpu(gdp->bg_inode_bitmap));
+                                    " not in group (block "E3FSBLK")!",
+                                    i, inode_bitmap);
                         return 0;
                 }
-                if (le32_to_cpu(gdp->bg_inode_table) < first_block ||
-                    le32_to_cpu(gdp->bg_inode_table) + sbi->s_itb_per_group >
-                    last_block)
+                inode_table = ext4_inode_table(gdp);
+                if (inode_table < first_block ||
+                    inode_table + sbi->s_itb_per_group > last_block)
                 {
                         ext4_error (sb, "ext4_check_descriptors",
                                     "Inode table for group %d"
-                                    " not in group (block %lu)!",
-                                    i, (unsigned long)
-                                        le32_to_cpu(gdp->bg_inode_table));
+                                    " not in group (block "E3FSBLK")!",
+                                    i, inode_table);
                         return 0;
                 }
                 first_block += EXT4_BLOCKS_PER_GROUP(sb);
                 gdp++;
         }
 
-        sbi->s_es->s_free_blocks_count=cpu_to_le32(ext4_count_free_blocks(sb));
+        ext4_free_blocks_count_set(sbi->s_es, ext4_count_free_blocks(sb));
         sbi->s_es->s_free_inodes_count=cpu_to_le32(ext4_count_free_inodes(sb));
         return 1;
 }
@@ -1411,6 +1448,7 @@ static int ext4_fill_super (struct super_block *sb, void *data, int silent)
         int i;
         int needs_recovery;
         __le32 features;
+        __u64 blocks_count;
 
         sbi = kzalloc(sizeof(*sbi), GFP_KERNEL);
         if (!sbi)
@@ -1620,7 +1658,7 @@ static int ext4_fill_super (struct super_block *sb, void *data, int silent)
                 goto failed_mount;
         }
 
-        if (le32_to_cpu(es->s_blocks_count) >
+        if (ext4_blocks_count(es) >
                     (sector_t)(~0ULL) >> (sb->s_blocksize_bits - 9)) {
                 printk(KERN_ERR "EXT4-fs: filesystem on %s:"
                         " too large to mount safely\n", sb->s_id);
@@ -1632,9 +1670,11 @@ static int ext4_fill_super (struct super_block *sb, void *data, int silent)
 
         if (EXT4_BLOCKS_PER_GROUP(sb) == 0)
                 goto cantfind_ext4;
-        sbi->s_groups_count = ((le32_to_cpu(es->s_blocks_count) -
-                               le32_to_cpu(es->s_first_data_block) - 1)
-                                       / EXT4_BLOCKS_PER_GROUP(sb)) + 1;
+        blocks_count = (ext4_blocks_count(es) -
+                        le32_to_cpu(es->s_first_data_block) +
+                        EXT4_BLOCKS_PER_GROUP(sb) - 1);
+        do_div(blocks_count, EXT4_BLOCKS_PER_GROUP(sb));
+        sbi->s_groups_count = blocks_count;
         db_count = (sbi->s_groups_count + EXT4_DESC_PER_BLOCK(sb) - 1) /
                    EXT4_DESC_PER_BLOCK(sb);
         sbi->s_group_desc = kmalloc(db_count * sizeof (struct buffer_head *),
@@ -1949,7 +1989,7 @@ static journal_t *ext4_get_dev_journal(struct super_block *sb,
                 goto out_bdev;
         }
 
-        len = le32_to_cpu(es->s_blocks_count);
+        len = ext4_blocks_count(es);
         start = sb_block + 1;
         brelse(bh);     /* we're done with the superblock */
 
@@ -2119,7 +2159,7 @@ static void ext4_commit_super (struct super_block * sb,
         if (!sbh)
                 return;
         es->s_wtime = cpu_to_le32(get_seconds());
-        es->s_free_blocks_count = cpu_to_le32(ext4_count_free_blocks(sb));
+        ext4_free_blocks_count_set(es, ext4_count_free_blocks(sb));
         es->s_free_inodes_count = cpu_to_le32(ext4_count_free_inodes(sb));
         BUFFER_TRACE(sbh, "marking dirty");
         mark_buffer_dirty(sbh);
@@ -2312,7 +2352,7 @@ static int ext4_remount (struct super_block * sb, int * flags, char * data)
         ext4_init_journal_params(sb, sbi->s_journal);
 
         if ((*flags & MS_RDONLY) != (sb->s_flags & MS_RDONLY) ||
-                n_blocks_count > le32_to_cpu(es->s_blocks_count)) {
+                n_blocks_count > ext4_blocks_count(es)) {
                 if (sbi->s_mount_opt & EXT4_MOUNT_ABORT) {
                         err = -EROFS;
                         goto restore_opts;
@@ -2431,10 +2471,10 @@ static int ext4_statfs (struct dentry * dentry, struct kstatfs * buf)
 
         buf->f_type = EXT4_SUPER_MAGIC;
         buf->f_bsize = sb->s_blocksize;
-        buf->f_blocks = le32_to_cpu(es->s_blocks_count) - overhead;
+        buf->f_blocks = ext4_blocks_count(es) - overhead;
         buf->f_bfree = percpu_counter_sum(&sbi->s_freeblocks_counter);
-        buf->f_bavail = buf->f_bfree - le32_to_cpu(es->s_r_blocks_count);
-        if (buf->f_bfree < le32_to_cpu(es->s_r_blocks_count))
+        buf->f_bavail = buf->f_bfree - ext4_r_blocks_count(es);
+        if (buf->f_bfree < ext4_r_blocks_count(es))
                 buf->f_bavail = 0;
         buf->f_files = le32_to_cpu(es->s_inodes_count);
         buf->f_ffree = percpu_counter_sum(&sbi->s_freeinodes_counter);
diff --git a/include/linux/ext4_fs.h b/include/linux/ext4_fs.h
index 63ed89f5b27b..8e5009ee4ad8 100644
--- a/include/linux/ext4_fs.h
+++ b/include/linux/ext4_fs.h
@@ -128,10 +128,17 @@ struct ext4_group_desc
         __le16  bg_free_blocks_count;   /* Free blocks count */
         __le16  bg_free_inodes_count;   /* Free inodes count */
         __le16  bg_used_dirs_count;     /* Directories count */
-        __u16   bg_pad;
-        __le32  bg_reserved[3];
+        __u16   bg_flags;
+        __le16  bg_block_bitmap_hi;     /* Blocks bitmap block MSB */
+        __le16  bg_inode_bitmap_hi;     /* Inodes bitmap block MSB */
+        __le16  bg_inode_table_hi;      /* Inodes table block MSB */
+        __u16   bg_reserved[3];
 };
 
+#ifdef __KERNEL__
+#include <linux/ext4_fs_i.h>
+#include <linux/ext4_fs_sb.h>
+#endif
 /*
  * Macro-instructions used to manage group descriptors
  */
@@ -194,9 +201,9 @@ struct ext4_group_desc
 /* Used to pass group descriptor data when online resize is done */
 struct ext4_new_group_input {
         __u32 group;            /* Group number for this data */
-        __u32 block_bitmap;     /* Absolute block number of block bitmap */
-        __u32 inode_bitmap;     /* Absolute block number of inode bitmap */
-        __u32 inode_table;      /* Absolute block number of inode table start */
+        __u64 block_bitmap;     /* Absolute block number of block bitmap */
+        __u64 inode_bitmap;     /* Absolute block number of inode bitmap */
+        __u64 inode_table;      /* Absolute block number of inode table start */
         __u32 blocks_count;     /* Total number of blocks in this group */
         __u16 reserved_blocks;  /* Number of reserved blocks in this group */
         __u16 unused;
@@ -205,9 +212,9 @@ struct ext4_new_group_input {
 /* The struct ext4_new_group_input in kernel space, with free_blocks_count */
 struct ext4_new_group_data {
         __u32 group;
-        __u32 block_bitmap;
-        __u32 inode_bitmap;
-        __u32 inode_table;
+        __u64 block_bitmap;
+        __u64 inode_bitmap;
+        __u64 inode_table;
         __u32 blocks_count;
         __u16 reserved_blocks;
         __u16 unused;
@@ -494,14 +501,18 @@ struct ext4_super_block {
         __u8    s_def_hash_version;     /* Default hash version to use */
         __u8    s_reserved_char_pad;
         __u16   s_reserved_word_pad;
-        __le32  s_default_mount_opts;
+/*100*/ __le32  s_default_mount_opts;
         __le32  s_first_meta_bg;        /* First metablock block group */
-        __u32   s_reserved[190];        /* Padding to the end of the block */
+        __le32  s_mkfs_time;            /* When the filesystem was created */
+        __le32  s_jnl_blocks[17];       /* Backup of the journal inode */
+        /* 64bit support valid if EXT4_FEATURE_COMPAT_64BIT */
+/*150*/ __le32  s_blocks_count_hi;      /* Blocks count */
+        __le32  s_r_blocks_count_hi;    /* Reserved blocks count */
+        __le32  s_free_blocks_count_hi; /* Free blocks count */
+        __u32   s_reserved[169];        /* Padding to the end of the block */
 };
 
 #ifdef __KERNEL__
-#include <linux/ext4_fs_i.h>
-#include <linux/ext4_fs_sb.h>
 static inline struct ext4_sb_info * EXT4_SB(struct super_block *sb)
 {
         return sb->s_fs_info;
@@ -588,12 +599,14 @@ static inline int ext4_valid_inum(struct super_block *sb, unsigned long ino)
 #define EXT4_FEATURE_INCOMPAT_JOURNAL_DEV       0x0008 /* Journal device */
 #define EXT4_FEATURE_INCOMPAT_META_BG           0x0010
 #define EXT4_FEATURE_INCOMPAT_EXTENTS           0x0040 /* extents support */
+#define EXT4_FEATURE_INCOMPAT_64BIT             0x0080
 
 #define EXT4_FEATURE_COMPAT_SUPP        EXT2_FEATURE_COMPAT_EXT_ATTR
 #define EXT4_FEATURE_INCOMPAT_SUPP      (EXT4_FEATURE_INCOMPAT_FILETYPE| \
                                          EXT4_FEATURE_INCOMPAT_RECOVER| \
                                          EXT4_FEATURE_INCOMPAT_META_BG| \
-                                         EXT4_FEATURE_INCOMPAT_EXTENTS)
+                                         EXT4_FEATURE_INCOMPAT_EXTENTS| \
+                                         EXT4_FEATURE_INCOMPAT_64BIT)
 #define EXT4_FEATURE_RO_COMPAT_SUPP     (EXT4_FEATURE_RO_COMPAT_SPARSE_SUPER| \
                                          EXT4_FEATURE_RO_COMPAT_LARGE_FILE| \
                                          EXT4_FEATURE_RO_COMPAT_BTREE_DIR)
@@ -888,6 +901,53 @@ extern void ext4_abort (struct super_block *, const char *, const char *, ...)
 extern void ext4_warning (struct super_block *, const char *, const char *, ...)
         __attribute__ ((format (printf, 3, 4)));
 extern void ext4_update_dynamic_rev (struct super_block *sb);
+extern ext4_fsblk_t ext4_block_bitmap(struct ext4_group_desc *bg);
+extern ext4_fsblk_t ext4_inode_bitmap(struct ext4_group_desc *bg);
+extern ext4_fsblk_t ext4_inode_table(struct ext4_group_desc *bg);
+extern void ext4_block_bitmap_set(struct ext4_group_desc *bg, ext4_fsblk_t blk);
+extern void ext4_inode_bitmap_set(struct ext4_group_desc *bg, ext4_fsblk_t blk);
+extern void ext4_inode_table_set(struct ext4_group_desc *bg, ext4_fsblk_t blk);
+
+static inline ext4_fsblk_t ext4_blocks_count(struct ext4_super_block *es)
+{
+        return ((ext4_fsblk_t)le32_to_cpu(es->s_blocks_count_hi) << 32) |
+                le32_to_cpu(es->s_blocks_count);
+}
+
+static inline ext4_fsblk_t ext4_r_blocks_count(struct ext4_super_block *es)
+{
+        return ((ext4_fsblk_t)le32_to_cpu(es->s_r_blocks_count_hi) << 32) |
+                le32_to_cpu(es->s_r_blocks_count);
+}
+
+static inline ext4_fsblk_t ext4_free_blocks_count(struct ext4_super_block *es)
+{
+        return ((ext4_fsblk_t)le32_to_cpu(es->s_free_blocks_count_hi) << 32) |
+                le32_to_cpu(es->s_free_blocks_count);
+}
+
+static inline void ext4_blocks_count_set(struct ext4_super_block *es,
+                                         ext4_fsblk_t blk)
+{
+        es->s_blocks_count = cpu_to_le32((u32)blk);
+        es->s_blocks_count_hi = cpu_to_le32(blk >> 32);
+}
+
+static inline void ext4_free_blocks_count_set(struct ext4_super_block *es,
+                                              ext4_fsblk_t blk)
+{
+        es->s_free_blocks_count = cpu_to_le32((u32)blk);
+        es->s_free_blocks_count_hi = cpu_to_le32(blk >> 32);
+}
+
+static inline void ext4_r_blocks_count_set(struct ext4_super_block *es,
+                                           ext4_fsblk_t blk)
+{
+        es->s_r_blocks_count = cpu_to_le32((u32)blk);
+        es->s_r_blocks_count_hi = cpu_to_le32(blk >> 32);
+}
+
+
 
 #define ext4_std_error(sb, errno)                               \
 do {                                                            \