aboutsummaryrefslogtreecommitdiffstats
path: root/include/linux/ext4_fs_sb.h
diff options
context:
space:
mode:
authorAvantika Mathur <mathur@us.ibm.com>2008-01-28 23:58:27 -0500
committerTheodore Ts'o <tytso@mit.edu>2008-01-28 23:58:27 -0500
commitfd2d42912f9f09e5250cb3b024ee0625704e9cb7 (patch)
tree23e85123e8cc06d518fd7cff665f93429e19e4e2 /include/linux/ext4_fs_sb.h
parentbba907433b85ba2adae1bb3b6fd29b4e5f35c468 (diff)
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.h2
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 {
35 unsigned long s_itb_per_group; /* Number of inode table blocks per group */ 35 unsigned long s_itb_per_group; /* Number of inode table blocks per group */
36 unsigned long s_gdb_count; /* Number of group descriptor blocks */ 36 unsigned long s_gdb_count; /* Number of group descriptor blocks */
37 unsigned long s_desc_per_block; /* Number of group descriptors per block */ 37 unsigned long s_desc_per_block; /* Number of group descriptors per block */
38 unsigned long s_groups_count; /* Number of groups in the fs */ 38 ext4_group_t s_groups_count; /* Number of groups in the fs */
39 unsigned long s_overhead_last; /* Last calculated overhead */ 39 unsigned long s_overhead_last; /* Last calculated overhead */
40 unsigned long s_blocks_last; /* Last seen block count */ 40 unsigned long s_blocks_last; /* Last seen block count */
41 struct buffer_head * s_sbh; /* Buffer containing the super block */ 41 struct buffer_head * s_sbh; /* Buffer containing the super block */