nilfs2: remove useless b_low and b_high fields from nilfs_bmap struct

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>

1 files changed, 0 insertions, 4 deletions

diff --git a/fs/nilfs2/bmap.h b/fs/nilfs2/bmap.h
index 978073bf5650..28c77bb71bb7 100644
--- a/fs/nilfs2/bmap.h
+++ b/fs/nilfs2/bmap.h
@@ -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;