ce3077ee80
This flag was added byfe0f07d08e("direct-io: only inc/deci inode->i_dio_count for file systems") as means to optimise the atomic modificaiton of the variable for blockdevices. However with the advent of542ff7bf18("block: new direct I/O implementation") it became unused. So let's remove it. Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nikolay Borisov <nborisov@suse.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>