block_dev: remove DAX leftovers

DAX support for block devices was removed in commits 03cdad
("block: disable block device DAX by default") and 99a01cd
("block: remove BLK_DEV_DAX config option"), but we still kept a call to
dax_do_io and some uneeded i_flags manipulations introduced in commit
bbab37 ("block: Add support for DAX reads/writes to block devices").

Remove those leftovers.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Acked-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Jens Axboe <axboe@fb.com>

diff --git a/fs/block_dev.c b/fs/block_dev.c
index 08ae99343d92f91586b49fbf56367906855415ff..a516568f63b6e95ed6be99a25ad005dd3f611a3a 100644 (file)
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -180,9 +180,6 @@ blkdev_direct_IO(struct kiocb *iocb, struct iov_iter *iter)
        struct file *file = iocb->ki_filp;
        struct inode *inode = bdev_file_inode(file);
 
-       if (IS_DAX(inode))
-               return dax_do_io(iocb, inode, iter, blkdev_get_block,
-                               NULL, DIO_SKIP_DIO_COUNT);
        return __blockdev_direct_IO(iocb, inode, I_BDEV(inode), iter,
                                    blkdev_get_block, NULL, NULL,
                                    DIO_SKIP_DIO_COUNT);
@@ -1275,7 +1272,6 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, int for_part)
                bdev->bd_disk = disk;
                bdev->bd_queue = disk->queue;
                bdev->bd_contains = bdev;
-               bdev->bd_inode->i_flags = 0;
 
                if (!partno) {
                        ret = -ENXIO;
@@ -1303,11 +1299,8 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, int for_part)
                                }
                        }
 
-                       if (!ret) {
+                       if (!ret)
                                bd_set_size(bdev,(loff_t)get_capacity(disk)<<9);
-                               if (!bdev_dax_capable(bdev))
-                                       bdev->bd_inode->i_flags &= ~S_DAX;
-                       }
 
                        /*
                         * If the device is invalidated, rescan partition
@@ -1342,8 +1335,6 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, int for_part)
                                goto out_clear;
                        }
                        bd_set_size(bdev, (loff_t)bdev->bd_part->nr_sects << 9);
-                       if (!bdev_dax_capable(bdev))
-                               bdev->bd_inode->i_flags &= ~S_DAX;
                }
        } else {
                if (bdev->bd_contains == bdev) {