fs: use bdev_nr_sectors instead of open coding it in blkdev_max_block

Use the proper helper to read the block device size.

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

diff --git a/fs/buffer.c b/fs/buffer.c
index c615387aedcae8bd9e94fbc3faef44a2bbb2496b..3fb9c5b457ab694c06e465d6404eb73f9c4b6dc8 100644 (file)
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -878,7 +878,7 @@ link_dev_buffers(struct page *page, struct buffer_head *head)
 static sector_t blkdev_max_block(struct block_device *bdev, unsigned int size)
 {
        sector_t retval = ~((sector_t)0);
-       loff_t sz = i_size_read(bdev->bd_inode);
+       loff_t sz = bdev_nr_sectors(bdev) << SECTOR_SHIFT;
 
        if (sz) {
                unsigned int sizebits = blksize_bits(size);