c2572f2b4f
brd is missing a flush_dcache_page. On 2nd thoughts, perhaps it is the pagecache's responsibility to flush user virtual aliases (the driver of course should flush kernel virtual mappings)... but anyway, there already exists cache flushing for one direction of transfer, so we should add the other. Signed-off-by: Nick Piggin <npiggin@suse.de> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>