Date: Fri, 02 Mar 2001 09:22:52 -0800 (PST) From: John Baldwin <jhb@FreeBSD.org> To: Bruce Evans <bde@zeta.org.au> Cc: cvs-all@FreeBSD.org, cvs-committers@FreeBSD.org Subject: Re: cvs commit: src/sys/kern kern_intr.c Message-ID: <XFMail.010302092252.jhb@FreeBSD.org> In-Reply-To: <Pine.BSF.4.21.0103022332480.11325-100000@besplex.bde.org>
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On 02-Mar-01 Bruce Evans wrote:
> On Thu, 1 Mar 2001, John Baldwin wrote:
>
>> jhb 2001/03/01 22:07:39 PST
>>
>> Modified files:
>> sys/kern kern_intr.c
>> Log:
>> Ok, the kernel will panic in kmem_malloc() if the kernel map is full, so
>> malloc with M_WAITOK can't actually return NULL. I wish I could get two
>> people to give me the same answer about this when I ask...
>
> Erm, this (non-returning of malloc with M_WAITOK) is clearly documented
> in malloc.9. The panic is an implementation detail so it should not
> be documented. Maybe we should have a Great Renaming for malloc() like
> we did for mtx_enter() to get rid of the evil flags :-).
Heh. So officially for the final and last time:
malloc() can only return NULL if M_NOWAIT is specified.
> Bruce
--
John Baldwin <jhb@FreeBSD.org> -- http://www.FreeBSD.org/~jhb/
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