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nilfs2: remove useless b_low and b_high fields from nilfs_bmap struct

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This will cut off 16 bytes from the nilfs_bmap struct which is
embedded in the on-memory inode of nilfs.

The b_high field was never used, and the b_low field stores a constant
value which can be determined by whether the inode uses btree for
block mapping or not.

Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
This commit is contained in:
Ryusuke Konishi
2009-05-24 00:09:44 +09:00
parent e473c1f265
commit 3033342a0b
6 changed files with 18 additions and 43 deletions
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4
fs/nilfs2/bmap.h
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@@ -125,8 +125,6 @@ static inline int nilfs_bmap_is_new_ptr(unsigned long ptr)
* @b_inode: owner of bmap
* @b_ops: bmap operation table
* @b_pops: bmap ptr operation table
* @b_low: low watermark of conversion
* @b_high: high watermark of conversion
* @b_last_allocated_key: last allocated key for data block
* @b_last_allocated_ptr: last allocated ptr for data block
* @b_state: state
@@ -140,8 +138,6 @@ struct nilfs_bmap {
struct inode *b_inode;
const struct nilfs_bmap_operations *b_ops;
const struct nilfs_bmap_ptr_operations *b_pops;
__u64 b_low;
__u64 b_high;
__u64 b_last_allocated_key;
__u64 b_last_allocated_ptr;
int b_state;