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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 /fs/ext4/inode.c
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 'fs/ext4/inode.c')
-rw-r--r--fs/ext4/inode.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 488f829a887..1ee19c91868 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) /