Обсуждение: Patch for unreleased memory in buf_init.c

Hello,

attached is a patch to fix a memory leak in buf_init.c

Ulrich

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"Ulrich Neumann" <U_Neumann@gne.de> writes:
> attached is a patch to fix a memory leak in buf_init.c

You've *got* to be kidding :-(

            regards, tom lane

Oh, I take that back --- I misread where you'd put the free()s.

Hmm, so the point is to reclaim memory during a shmem reinit cycle?
Might be worth doing, but I fear this is unlikely to be the only such
leakage ...

            regards, tom lane

I said:
> Hmm, so the point is to reclaim memory during a shmem reinit cycle?

But on third think, it doesn't do that either, and in fact is just a
waste of cycles.  ShutdownBufferPoolAccess is only called in a backend
that is about to exit, and the storage you propose it should release
is local to that backend ...

So the patch appears harmless but also useless.  A backend on-exit
routine is generally only interested in cleaning up state that is
visible to other backends --- I can't see any point in expending cycles
to tidy up local memory that's about to vanish.

            regards, tom lane