diff mbox

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

Message ID 1420739133-27514-6-git-send-email-hch@lst.de (mailing list archive)
State New, archived
Headers show

Commit Message

Christoph Hellwig Jan. 8, 2015, 5:45 p.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>
---
 fs/fs-writeback.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

Comments

Tejun Heo Jan. 11, 2015, 5:40 p.m. UTC | #1 
On Thu, Jan 08, 2015 at 06:45:26PM +0100, 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>

Thanks.
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;
 }