Commit 495a276e authored Jan 14, 2015 by Christoph Hellwig Committed by Jens Axboe Jan 20, 2015

block_dev: get bdev inode bdi directly from the block device



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>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jens Axboe <axboe@fb.com>

parent 564f00f6

fs/fs-writeback.c

+3 −3

Original line number	Diff line number	Diff line
		@@ -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;
		}