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block, dax: remove dead code in blkdev_writepages() 

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: Dave Chinner <david@fromorbit.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
This commit is contained in:
Dan Williams 2018-03-11 12:03:08 -07:00
parent f44c77630d
commit 15aa8a0118
1 changed files with 0 additions and 5 deletions
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5
fs/block_dev.c
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@ -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);
}