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From: Florian Weimer <fweimer@redhat.com>
To: ur bridge via Libc-help <libc-help@sourceware.org>
Subject: Re: Where could I find the definition of __vm_deallocate() called
 by __munmap()?
References: <BN8PR18MB264364A7C08742127454F68EC4ED9@BN8PR18MB2643.namprd18.prod.outlook.com>
Date: Sat, 31 Jul 2021 19:51:29 +0200
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 (ur bridge via Libc-help's message of "Sat, 31 Jul 2021 17:37:16
 +0000")
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* ur bridge via Libc-help:

> I=E2=80=99m reading the malloc.c code, and find that when __munmap() is c=
alled
> to free a mmapped chunk, the control flow will fall into
> sysdeps/mach/munmap.c, where __vm_deallocate() will be
> called. However, I cannot find its definition. Where could it be?

This is Hurd code.  For Linux, __munmap is indeed a thin system call
wrapper.

Thanks,
Florian