Directly grab the backing_dev_info from the request_queue instead of
detouring through the address_space.
Signed-off-by: Christoph Hellwig <hch@xxxxxx>
Reviewed-by: Tejun Heo <tj@xxxxxxxxxx>
---
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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