linux-kernel - RE: [PATCH 3/14] arch/ia64: Eliminate NULL test and memset after alloc

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Date:	Tue, 24 Jun 2008 10:42:22 -0700
From:	"Luck, Tony" <tony.luck@...el.com>
To:	Julia Lawall <julia@...u.dk>,
	"akinobu.mita@...il.com" <akinobu.mita@...il.com>,
	"linux-ia64@...r.kernel.org" <linux-ia64@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"kernel-janitors@...r.kernel.org" <kernel-janitors@...r.kernel.org>
Subject: RE: [PATCH 3/14] arch/ia64: Eliminate NULL test and memset after
 alloc_bootmem

> As noted by Akinobu Mita in patch b1fceac2b9e04d278316b2faddf276015fc06e3b,
> alloc_bootmem and related functions never return NULL and always return a
> zeroed region of memory.  Thus a NULL test or memset after calls to these
> functions is unnecessary.

There is no commit b1fceac2b9e04d278316b2faddf276015fc06e3b in Linus' tree.

In addition the current alloc_bootmem() is a macro that uses __alloc_bootmem
which most defintely can return NULL.

Is this against -mm or linux-next?

-Tony
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