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authorChristoph Hellwig <hch@lst.de>2015-01-14 12:42:34 +0300
committerJens Axboe <axboe@fb.com>2015-01-21 00:03:01 +0300
commit495a276e1ca96af622edb67ad0f85431935b20d2 (patch)
tree6ff49a955028c9b1f61c722cbbc38976448d8056 /fs/fs-writeback.c
parent564f00f6c03a9339c259eb71a5b3aa8ef7ff1c2e (diff)
downloadlinux-495a276e1ca96af622edb67ad0f85431935b20d2.tar.xz
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>
Diffstat (limited to 'fs/fs-writeback.c')
-rw-r--r--fs/fs-writeback.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/fs/fs-writeback.c b/fs/fs-writeback.c
index 2d609a5fbfea..e8116a44cc29 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;
}