diff options
| 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 /fs/ext4/super.c | |
| parent | bba907433b85ba2adae1bb3b6fd29b4e5f35c468 (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 'fs/ext4/super.c')
| -rw-r--r-- | fs/ext4/super.c | 20 |
1 files changed, 9 insertions, 11 deletions
diff --git a/fs/ext4/super.c b/fs/ext4/super.c index 6302b036c121..df8842b43544 100644 --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -1364,7 +1364,7 @@ static int ext4_check_descriptors (struct super_block * sb) struct ext4_group_desc * gdp = NULL; int desc_block = 0; int flexbg_flag = 0; - int i; + ext4_group_t i; if (EXT4_HAS_INCOMPAT_FEATURE(sb, EXT4_FEATURE_INCOMPAT_FLEX_BG)) flexbg_flag = 1; @@ -1386,7 +1386,7 @@ static int ext4_check_descriptors (struct super_block * sb) if (block_bitmap < first_block || block_bitmap > last_block) { ext4_error (sb, "ext4_check_descriptors", - "Block bitmap for group %d" + "Block bitmap for group %lu" " not in group (block %llu)!", i, block_bitmap); return 0; @@ -1395,7 +1395,7 @@ static int ext4_check_descriptors (struct super_block * sb) if (inode_bitmap < first_block || inode_bitmap > last_block) { ext4_error (sb, "ext4_check_descriptors", - "Inode bitmap for group %d" + "Inode bitmap for group %lu" " not in group (block %llu)!", i, inode_bitmap); return 0; @@ -1405,17 +1405,16 @@ static int ext4_check_descriptors (struct super_block * sb) inode_table + sbi->s_itb_per_group - 1 > last_block) { ext4_error (sb, "ext4_check_descriptors", - "Inode table for group %d" + "Inode table for group %lu" " not in group (block %llu)!", i, inode_table); return 0; } if (!ext4_group_desc_csum_verify(sbi, i, gdp)) { ext4_error(sb, __FUNCTION__, - "Checksum for group %d failed (%u!=%u)\n", i, - le16_to_cpu(ext4_group_desc_csum(sbi, i, - gdp)), - le16_to_cpu(gdp->bg_checksum)); + "Checksum for group %lu failed (%u!=%u)\n", + i, le16_to_cpu(ext4_group_desc_csum(sbi, i, + gdp)), le16_to_cpu(gdp->bg_checksum)); return 0; } if (!flexbg_flag) @@ -1429,7 +1428,6 @@ static int ext4_check_descriptors (struct super_block * sb) return 1; } - /* ext4_orphan_cleanup() walks a singly-linked list of inodes (starting at * the superblock) which were deleted from all directories, but held open by * a process at the time of a crash. We walk the list and try to delete these @@ -1570,7 +1568,7 @@ static ext4_fsblk_t descriptor_loc(struct super_block *sb, ext4_fsblk_t logical_sb_block, int nr) { struct ext4_sb_info *sbi = EXT4_SB(sb); - unsigned long bg, first_meta_bg; + ext4_group_t bg, first_meta_bg; int has_super = 0; first_meta_bg = le32_to_cpu(sbi->s_es->s_first_meta_bg); @@ -2678,7 +2676,7 @@ static int ext4_statfs (struct dentry * dentry, struct kstatfs * buf) if (test_opt(sb, MINIX_DF)) { sbi->s_overhead_last = 0; } else if (sbi->s_blocks_last != ext4_blocks_count(es)) { - unsigned long ngroups = sbi->s_groups_count, i; + ext4_group_t ngroups = sbi->s_groups_count, i; ext4_fsblk_t overhead = 0; smp_rmb(); |