bcache: use bdev_read_cache_page

Use bdev_read_cache_page instead of open coding it.

Signed-off-by: Christoph Hellwig <hch@lst.de>

diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c
index 4f89985abe4b7571332f7b417ce7b267cd4b25e7..d0905bac58c3c5a0cfc564be34b60403e1cea4f6 100644 (file)
--- a/drivers/md/bcache/super.c
+++ b/drivers/md/bcache/super.c
@@ -172,8 +172,7 @@ static const char *read_super(struct cache_sb *sb, struct block_device *bdev,
        struct page *page;
        unsigned int i;
 
-       page = read_cache_page_gfp(bdev->bd_inode->i_mapping,
-                                  SB_OFFSET >> PAGE_SHIFT, GFP_KERNEL);
+       page = bdev_read_cache_page(bdev, SB_OFFSET >> PAGE_SHIFT, GFP_KERNEL);
        if (IS_ERR(page))
                return "IO error";
        s = page_address(page) + offset_in_page(SB_OFFSET);