diff mbox

[05/12] block_dev: get bdev inode bdi directly from the block device

Message ID 1421228561-16857-6-git-send-email-hch@lst.de (mailing list archive)
State New, archived
Headers show

Commit Message

Christoph Hellwig Jan. 14, 2015, 9:42 a.m. UTC 
Directly grab the backing_dev_info from the request_queue instead of
detouring through the address_space.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Tejun Heo <tj@kernel.org>
---
 fs/fs-writeback.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

Comments

Jan Kara Jan. 14, 2015, 1 p.m. UTC | #1 
On Wed 14-01-15 10:42:34, Christoph Hellwig wrote:
> Directly grab the backing_dev_info from the request_queue instead of
> detouring through the address_space.
> 
> Signed-off-by: Christoph Hellwig <hch@lst.de>
> Reviewed-by: Tejun Heo <tj@kernel.org>
  Looks good. You can add:
Reviewed-by: Jan Kara <jack@suse.cz>

								Honza

> ---
>  fs/fs-writeback.c | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
> index 2d609a5..e8116a4 100644
> --- a/fs/fs-writeback.c
> +++ b/fs/fs-writeback.c
> @@ -69,10 +69,10 @@ EXPORT_SYMBOL(writeback_in_progress);
>  static inline struct backing_dev_info *inode_to_bdi(struct inode *inode)
>  {
>  	struct super_block *sb = inode->i_sb;
> -
> +#ifdef CONFIG_BLOCK
>  	if (sb_is_blkdev_sb(sb))
> -		return inode->i_mapping->backing_dev_info;
> -
> +		return blk_get_backing_dev_info(I_BDEV(inode));
> +#endif
>  	return sb->s_bdi;
>  }
>  
> -- 
> 1.9.1
> 
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diff mbox

Patch

diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
index 2d609a5..e8116a4 100644
--- a/fs/fs-writeback.c
+++ b/fs/fs-writeback.c
@@ -69,10 +69,10 @@  EXPORT_SYMBOL(writeback_in_progress);
 static inline struct backing_dev_info *inode_to_bdi(struct inode *inode)
 {
 	struct super_block *sb = inode->i_sb;
-
+#ifdef CONFIG_BLOCK
 	if (sb_is_blkdev_sb(sb))
-		return inode->i_mapping->backing_dev_info;
-
+		return blk_get_backing_dev_info(I_BDEV(inode));
+#endif
 	return sb->s_bdi;
 }