[PATCH v7 03/14] block, dax: remove dead code in blkdev_writepages()

Dan Williams
2018-03-21T23:10:19Z

Block device inodes never have S_DAX set, so kill the check for DAX and
diversion to dax_writeback_mapping_range().

Cc: Jeff Moyer <jmoyer@redhat.com>
Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
Cc: Matthew Wilcox <mawilcox@microsoft.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Dave Chinner <david@fromorbit.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
---
fs/block_dev.c | 5 -----
1 file changed, 5 deletions(-)

diff --git a/fs/block_dev.c b/fs/block_dev.c
index fe09ef9c21f3..846ee2d31781 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -1946,11 +1946,6 @@ static int blkdev_releasepage(struct page *page, gfp_t wait)
static int blkdev_writepages(struct address_space *mapping,
struct writeback_control *wbc)
{
- if (dax_mapping(mapping)) {
- struct block_device *bdev = I_BDEV(mapping->host);
-
- return dax_writeback_mapping_range(mapping, bdev, wbc);
- }
return generic_writepages(mapping, wbc);
}