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| author | Avantika Mathur <mathur@us.ibm.com> | 2008-01-28 23:58:27 -0500 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2008-01-28 23:58:27 -0500 |
| commit | fd2d42912f9f09e5250cb3b024ee0625704e9cb7 (patch) | |
| tree | 23e85123e8cc06d518fd7cff665f93429e19e4e2 /include/linux/ext4_fs_sb.h | |
| parent | bba907433b85ba2adae1bb3b6fd29b4e5f35c468 (diff) | |
| download | linux-fd2d42912f9f09e5250cb3b024ee0625704e9cb7.tar.gz linux-fd2d42912f9f09e5250cb3b024ee0625704e9cb7.tar.bz2 linux-fd2d42912f9f09e5250cb3b024ee0625704e9cb7.zip | |
ext4: add ext4_group_t, and change all group variables to this type.
In many places variables for block group are of type int, which limits the
maximum number of block groups to 2^31. Each block group can have up to
2^15 blocks, with a 4K block size, and the max filesystem size is limited to
2^31 * (2^15 * 2^12) = 2^58 -- or 256 PB
This patch introduces a new type ext4_group_t, of type unsigned long, to
represent block group numbers in ext4.
All occurrences of block group variables are converted to type ext4_group_t.
Signed-off-by: Avantika Mathur <mathur@us.ibm.com>
Diffstat (limited to 'include/linux/ext4_fs_sb.h')
| -rw-r--r-- | include/linux/ext4_fs_sb.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/ext4_fs_sb.h b/include/linux/ext4_fs_sb.h index b40e827cd495..f15821c5e4c4 100644 --- a/include/linux/ext4_fs_sb.h +++ b/include/linux/ext4_fs_sb.h @@ -35,7 +35,7 @@ struct ext4_sb_info { unsigned long s_itb_per_group; /* Number of inode table blocks per group */ unsigned long s_gdb_count; /* Number of group descriptor blocks */ unsigned long s_desc_per_block; /* Number of group descriptors per block */ - unsigned long s_groups_count; /* Number of groups in the fs */ + ext4_group_t s_groups_count; /* Number of groups in the fs */ unsigned long s_overhead_last; /* Last calculated overhead */ unsigned long s_blocks_last; /* Last seen block count */ struct buffer_head * s_sbh; /* Buffer containing the super block */ |