for a socket file , what does "file->f_op->poll()" do ?

[horseriver <horserivers@xxxxxxxxx>]

hi:

  for a socket file point , what will this function do ?

  file->f_op->poll();       ///poll is declared  in the file-operations struct .

  but I do not find this function's definition .

  Is there some advice?

thanks!

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