[PATCH] ext4: switch fsblk to sector_t

Redefine ext3 in-kernel filesystem block type (ext3_fsblk_t) from unsigned
long to sector_t, to allow kernel to handle  >32 bit ext3 blocks.

Signed-off-by: Mingming Cao <cmm@us.ibm.com>
Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 9 insertions, 14 deletions

diff --git a/fs/ext4/balloc.c b/fs/ext4/balloc.c
index e9e98449137b..aa33ff271fa9 100644
--- a/fs/ext4/balloc.c
+++ b/fs/ext4/balloc.c
@@ -147,7 +147,7 @@ restart:
                 rsv = list_entry(n, struct ext4_reserve_window_node, rsv_node);
                 if (verbose)
                         printk("reservation window 0x%p "
-                               "start:  %lu, end:  %lu\n",
+                               "start:  "E3FSBLK", end:  "E3FSBLK"\n",
                                rsv, rsv->rsv_start, rsv->rsv_end);
                 if (rsv->rsv_start && rsv->rsv_start >= rsv->rsv_end) {
                         printk("Bad reservation %p (start >= end)\n",
@@ -443,10 +443,7 @@ void ext4_free_blocks_sb(handle_t *handle, struct super_block *sb,
 
 do_more:
         overflow = 0;
-        block_group = (block - le32_to_cpu(es->s_first_data_block)) /
-                      EXT4_BLOCKS_PER_GROUP(sb);
-        bit = (block - le32_to_cpu(es->s_first_data_block)) %
-                      EXT4_BLOCKS_PER_GROUP(sb);
+        ext4_get_group_no_and_offset(sb, block, &block_group, &bit);
         /*
          * Check to see if we are freeing blocks across a group
          * boundary.
@@ -1404,7 +1401,7 @@ ext4_fsblk_t ext4_new_blocks(handle_t *handle, struct inode *inode,
 {
         struct buffer_head *bitmap_bh = NULL;
         struct buffer_head *gdp_bh;
-        int group_no;
+        unsigned long group_no;
         int goal_group;
         ext4_grpblk_t grp_target_blk;   /* blockgroup relative goal block */
         ext4_grpblk_t grp_alloc_blk;    /* blockgroup-relative allocated block*/
@@ -1467,8 +1464,7 @@ ext4_fsblk_t ext4_new_blocks(handle_t *handle, struct inode *inode,
         if (goal < le32_to_cpu(es->s_first_data_block) ||
             goal >= le32_to_cpu(es->s_blocks_count))
                 goal = le32_to_cpu(es->s_first_data_block);
-        group_no = (goal - le32_to_cpu(es->s_first_data_block)) /
-                        EXT4_BLOCKS_PER_GROUP(sb);
+        ext4_get_group_no_and_offset(sb, goal, &group_no, &grp_target_blk);
         goal_group = group_no;
 retry_alloc:
         gdp = ext4_get_group_desc(sb, group_no, &gdp_bh);
@@ -1485,8 +1481,6 @@ retry_alloc:
                 my_rsv = NULL;
 
         if (free_blocks > 0) {
-                grp_target_blk = ((goal - le32_to_cpu(es->s_first_data_block)) %
-                                EXT4_BLOCKS_PER_GROUP(sb));
                 bitmap_bh = read_block_bitmap(sb, group_no);
                 if (!bitmap_bh)
                         goto io_error;
@@ -1613,7 +1607,7 @@ allocated:
         if (ret_block + num - 1 >= le32_to_cpu(es->s_blocks_count)) {
                 ext4_error(sb, "ext4_new_block",
                             "block("E3FSBLK") >= blocks count(%d) - "
-                            "block_group = %d, es == %p ", ret_block,
+                            "block_group = %lu, es == %p ", ret_block,
                         le32_to_cpu(es->s_blocks_count), group_no, es);
                 goto out;
         }
@@ -1733,9 +1727,10 @@ ext4_fsblk_t ext4_count_free_blocks(struct super_block *sb)
 static inline int
 block_in_use(ext4_fsblk_t block, struct super_block *sb, unsigned char *map)
 {
-        return ext4_test_bit ((block -
-                le32_to_cpu(EXT4_SB(sb)->s_es->s_first_data_block)) %
-                         EXT4_BLOCKS_PER_GROUP(sb), map);
+        ext4_grpblk_t offset;
+
+        ext4_get_group_no_and_offset(sb, block, NULL, &offset);
+        return ext4_test_bit (offset, map);
 }
 
 static inline int test_root(int a, int b)