taglinefilesource code
newtime825fs/buffer.cint newtime;
newtime829fs/buffer.cnewtime = jiffies + (flag ? bdf_prm.b_un.age_super : 
newtime831fs/buffer.cif(!buf->b_flushtime || buf->b_flushtime > newtime)
newtime832fs/buffer.cbuf->b_flushtime = newtime;