[V5,4/5] QUOTA cleanup: Use inode->i_blkbits to get block bits

quota: Use inode->i_blkbits to get block bits

From: Mingming Cao <cmm@us.ibm.com>

Andrew has suggested to use inode->i_blkbits to get the block bits info,
rather than use super block's blockbits. That should be faster and emit
less code.

Signed-off-by: Mingming Cao <cmm@us.ibm.com>
---
 include/linux/quotaops.h |   23 ++++++++---------------
 1 file changed, 8 insertions(+), 15 deletions(-)



--
To unsubscribe from this list: send the line "unsubscribe linux-ext4" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html

On Mon 05-01-09 20:41:14, Mingming Cao wrote:
> quota: Use inode->i_blkbits to get block bits
> 
> From: Mingming Cao <cmm@us.ibm.com>
> 
> Andrew has suggested to use inode->i_blkbits to get the block bits info,
> rather than use super block's blockbits. That should be faster and emit
> less code.
> 
> Signed-off-by: Mingming Cao <cmm@us.ibm.com>
  Thanks. The patch is fine. You can add "Acked-by: Jan Kara <jack@suse.cz>"

										Honza
> ---
>  include/linux/quotaops.h |   23 ++++++++---------------
>  1 file changed, 8 insertions(+), 15 deletions(-)
> 
> Index: linux-2.6.28-git7/include/linux/quotaops.h
> ===================================================================
> --- linux-2.6.28-git7.orig/include/linux/quotaops.h	2009-01-05 20:06:37.000000000 -0800
> +++ linux-2.6.28-git7/include/linux/quotaops.h	2009-01-05 20:06:52.000000000 -0800
> @@ -412,39 +412,32 @@ static inline void vfs_dq_free_space(str
>  
>  static inline int vfs_dq_prealloc_block_nodirty(struct inode *inode, qsize_t nr)
>  {
> -	return vfs_dq_prealloc_space_nodirty(inode,
> -			nr << inode->i_sb->s_blocksize_bits);
> +	return vfs_dq_prealloc_space_nodirty(inode, nr << inode->i_blkbits);
>  }
>  
>  static inline int vfs_dq_prealloc_block(struct inode *inode, qsize_t nr)
>  {
> -	return vfs_dq_prealloc_space(inode,
> -			nr << inode->i_sb->s_blocksize_bits);
> +	return vfs_dq_prealloc_space(inode, nr << inode->i_blkbits);
>  }
>  
>  static inline int vfs_dq_alloc_block_nodirty(struct inode *inode, qsize_t nr)
>  {
> - 	return vfs_dq_alloc_space_nodirty(inode,
> -			nr << inode->i_sb->s_blocksize_bits);
> +	return vfs_dq_alloc_space_nodirty(inode, nr << inode->i_blkbits);
>  }
>  
> -
>  static inline int vfs_dq_alloc_block(struct inode *inode, qsize_t nr)
>  {
> -	return vfs_dq_alloc_space(inode,
> -			nr << inode->i_sb->s_blocksize_bits);
> +	return vfs_dq_alloc_space(inode, nr << inode->i_blkbits);
>  }
>  
>  static inline int vfs_dq_reserve_block(struct inode *inode, qsize_t nr)
>  {
> -	return vfs_dq_reserve_space(inode,
> -			nr << inode->i_blkbits);
> +	return vfs_dq_reserve_space(inode, nr << inode->i_blkbits);
>  }
>  
>  static inline int vfs_dq_claim_block(struct inode *inode, qsize_t nr)
>  {
> -	return vfs_dq_claim_space(inode,
> -			nr << inode->i_blkbits);
> +	return vfs_dq_claim_space(inode, nr << inode->i_blkbits);
>  }
>  
>  static inline
> @@ -455,12 +448,12 @@ void vfs_dq_release_reservation_block(st
>  
>  static inline void vfs_dq_free_block_nodirty(struct inode *inode, qsize_t nr)
>  {
> -	vfs_dq_free_space_nodirty(inode, nr << inode->i_sb->s_blocksize_bits);
> +	vfs_dq_free_space_nodirty(inode, nr << inode->i_blkbits);
>  }
>  
>  static inline void vfs_dq_free_block(struct inode *inode, qsize_t nr)
>  {
> -	vfs_dq_free_space(inode, nr << inode->i_sb->s_blocksize_bits);
> +	vfs_dq_free_space(inode, nr << inode->i_blkbits);
>  }
>  
>  /*
> 
>