From: Guenter Roeck <linux@roeck-us.net>
To: Christoph Lameter <cl@linux.com>, Johannes Weiner <hannes@cmpxchg.org>
Cc: akpm@linux-foundation.org, mm-commits@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
linux-fsdevel@vger.kernel.org, linux-next@vger.kernel.org,
sfr@canb.auug.org.au, mhocko@suse.cz
Subject: Re: mmotm 2015-01-22-15-04: qemu failure due to 'mm: memcontrol: remove unnecessary soft limit tree node test'
Date: Fri, 23 Jan 2015 12:33:33 -0800 [thread overview]
Message-ID: <54C2B01D.4070303@roeck-us.net> (raw)
In-Reply-To: <alpine.DEB.2.11.1501231419420.11767@gentwo.org>
On 01/23/2015 12:20 PM, Christoph Lameter wrote:
> On Fri, 23 Jan 2015, Johannes Weiner wrote:
>
>> struct mem_cgroup_tree_per_node *rtpn;
>> struct mem_cgroup_tree_per_zone *rtpz;
>> - int tmp, node, zone;
>> + int node, zone;
>>
>> for_each_node(node) {
>
> Do for_each_online_node(node) {
>
> instead?
>
Wouldn't that have unintended consequences ? So far
rb tree nodes are allocated even if a node not online;
the above would change that. Are you saying it is
unnecessary to initialize rb tree nodes if the node
is not online ?
Not that I have any idea what is correct, it just seems odd
that the existing code would do all this allocation if it is not
necessary.
Guenter
next prev parent reply other threads:[~2015-01-23 20:33 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-01-22 23:05 mmotm 2015-01-22-15-04 uploaded akpm
2015-01-23 5:04 ` mmotm 2015-01-22-15-04: qemu failures due to 'mm: account pmd page tables to the process' Guenter Roeck
2015-01-23 11:13 ` Kirill A. Shutemov
2015-01-23 15:07 ` Guenter Roeck
2015-01-23 21:55 ` Andrew Morton
2015-01-24 2:44 ` Guenter Roeck
2015-01-24 3:05 ` Guenter Roeck
2015-01-24 5:52 ` Guenter Roeck
2015-01-26 12:29 ` Kirill A. Shutemov
2015-01-26 14:03 ` Guenter Roeck
2015-01-26 14:17 ` Guenter Roeck
2015-01-27 16:16 ` Kirill A. Shutemov
2015-01-27 16:24 ` Guenter Roeck
2015-01-27 21:24 ` Andrew Morton
2015-01-28 6:16 ` Guenter Roeck
2015-01-23 5:08 ` mmotm 2015-01-22-15-04: qemu failure due to 'mm: memcontrol: remove unnecessary soft limit tree node test' Guenter Roeck
2015-01-23 14:18 ` Johannes Weiner
2015-01-23 15:17 ` Christoph Lameter
2015-01-23 16:02 ` Johannes Weiner
2015-01-23 16:59 ` Guenter Roeck
2015-01-23 17:36 ` Johannes Weiner
2015-01-23 17:38 ` Johannes Weiner
2015-01-24 2:02 ` Guenter Roeck
2015-01-27 17:24 ` Michal Hocko
2015-01-28 15:03 ` Christoph Lameter
2015-01-23 15:46 ` Guenter Roeck
2015-01-23 16:03 ` Johannes Weiner
2015-01-23 20:20 ` Christoph Lameter
2015-01-23 20:33 ` Guenter Roeck [this message]
2015-01-23 21:09 ` Christoph Lameter
2015-01-24 7:16 ` Johannes Weiner
2015-01-25 21:36 ` Valdis.Kletnieks
2015-01-26 13:37 ` Johannes Weiner
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