On 2017/1/13 6:44, Jaegeuk Kim wrote: > This patch adds a kernel thread to issue discard commands. > It proposes three states, D_PREP, D_SUBMIT, and D_DONE to identify current > bio status. > > Signed-off-by: Jaegeuk Kim <jaegeuk@xxxxxxxxxx> Reviewed-by: Chao Yu <yuchao0@xxxxxxxxxx>