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| author | Avantika Mathur <mathur@us.ibm.com> | 2008-01-29 07:58:27 +0300 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2008-01-29 07:58:27 +0300 |
| commit | fd2d42912f9f09e5250cb3b024ee0625704e9cb7 (patch) | |
| tree | 23e85123e8cc06d518fd7cff665f93429e19e4e2 /fs/ext4/inode.c | |
| parent | bba907433b85ba2adae1bb3b6fd29b4e5f35c468 (diff) | |
| download | linux-fd2d42912f9f09e5250cb3b024ee0625704e9cb7.tar.xz | |
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/inode.c')
| -rw-r--r-- | fs/ext4/inode.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 488f829a8879..1ee19c918686 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -2464,7 +2464,8 @@ out_stop: static ext4_fsblk_t ext4_get_inode_block(struct super_block *sb, unsigned long ino, struct ext4_iloc *iloc) { - unsigned long desc, group_desc, block_group; + unsigned long desc, group_desc; + ext4_group_t block_group; unsigned long offset; ext4_fsblk_t block; struct buffer_head *bh; @@ -2551,7 +2552,7 @@ static int __ext4_get_inode_loc(struct inode *inode, struct ext4_group_desc *desc; int inodes_per_buffer; int inode_offset, i; - int block_group; + ext4_group_t block_group; int start; block_group = (inode->i_ino - 1) / |