Re: crash in pipe_create()

[enami tsugutomo <enami%sm.sony.co.jp@localhost>]

> Since the newly introduced pipe_ctor returns failure, pool_cache_get()
> has to check if the returned value isn't NULL even if it passes
> PR_WAIT.

Please read as follows:

"Since the newly introduced pipe_ctor returns failure, pipe_create()
has to check if the return value of pool_cache_get() isn't NULL even
if it passes PR_WAIT."

enami.