linux-kernel - Re: [PATCH 1/2] mm, nobootmem: Add return value check in __alloc_memory_core

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Message-ID: <20140107151942.GA3231@htj.dyndns.org>
Date:	Tue, 7 Jan 2014 10:19:42 -0500
From:	Tejun Heo <tj@...nel.org>
To:	Philipp Hachtmann <phacht@...ux.vnet.ibm.com>
Cc:	akpm@...ux-foundation.org, jiang.liu@...wei.com,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	iamjoonsoo.kim@....com, hannes@...xchg.org,
	tangchen@...fujitsu.com, toshi.kani@...com
Subject: Re: [PATCH 1/2] mm, nobootmem: Add return value check in
 __alloc_memory_core_early()

On Tue, Jan 07, 2014 at 04:16:13PM +0100, Philipp Hachtmann wrote:
> When memblock_reserve() fails because memblock.reserved.regions cannot
> be resized, the caller (e.g. alloc_bootmem()) is not informed of the
> failed allocation. Therefore alloc_bootmem() silently returns the same
> pointer again and again.
> This patch adds a check for the return value of memblock_reserve() in
> __alloc_memory_core().
> 
> Signed-off-by: Philipp Hachtmann <phacht@...ux.vnet.ibm.com>

Reviewed-by: Tejun Heo <tj@...nel.org>

Thanks.

-- 
tejun
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