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From: Andrew Morton <akpm@linux-foundation.org>
To: Hugh Dickins <hughd@google.com>
Cc: Petr Holasek <pholasek@redhat.com>,
	Andrea Arcangeli <aarcange@redhat.com>,
	Izik Eidus <izik.eidus@ravellosystems.com>,
	linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: Re: [PATCH 6/11] ksm: remove old stable nodes more thoroughly
Date: Mon, 28 Jan 2013 15:44:07 -0800	[thread overview]
Message-ID: <20130128154407.16a623a4.akpm@linux-foundation.org> (raw)
In-Reply-To: <alpine.LNX.2.00.1301251800550.29196@eggly.anvils>

On Fri, 25 Jan 2013 18:01:59 -0800 (PST)
Hugh Dickins <hughd@google.com> wrote:

> +static int remove_all_stable_nodes(void)
> +{
> +	struct stable_node *stable_node;
> +	int nid;
> +	int err = 0;
> +
> +	for (nid = 0; nid < nr_node_ids; nid++) {
> +		while (root_stable_tree[nid].rb_node) {
> +			stable_node = rb_entry(root_stable_tree[nid].rb_node,
> +						struct stable_node, node);
> +			if (remove_stable_node(stable_node)) {
> +				err = -EBUSY;

It's a bit rude to overwrite remove_stable_node()'s return value.

> +				break;	/* proceed to next nid */
> +			}
> +			cond_resched();

Why is this here?

> +		}
> +	}
> +	return err;
> +}

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  parent reply	other threads:[~2013-01-28 23:44 UTC|newest]

Thread overview: 69+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-01-26  1:53 [PATCH 0/11] ksm: NUMA trees and page migration Hugh Dickins
2013-01-26  1:54 ` [PATCH 1/11] ksm: allow trees per NUMA node Hugh Dickins
2013-01-27  1:14   ` Simon Jeons
2013-01-27  2:54     ` Hugh Dickins
2013-01-27  3:16       ` Simon Jeons
2013-01-27 21:55         ` Hugh Dickins
2013-01-28 23:03   ` Andrew Morton
2013-01-29  1:17     ` Hugh Dickins
2013-01-28 23:08   ` Andrew Morton
2013-01-29  1:38     ` Hugh Dickins
2013-02-05 16:41   ` Mel Gorman
2013-02-07 23:57     ` Hugh Dickins
2013-01-26  1:56 ` [PATCH 2/11] ksm: add sysfs ABI Documentation Hugh Dickins
2013-01-26  1:58 ` [PATCH 3/11] ksm: trivial tidyups Hugh Dickins
2013-01-28 23:11   ` Andrew Morton
2013-01-29  1:44     ` Hugh Dickins
2013-01-26  1:59 ` [PATCH 4/11] ksm: reorganize ksm_check_stable_tree Hugh Dickins
2013-02-05 16:48   ` Mel Gorman
2013-02-08  0:07     ` Hugh Dickins
2013-02-14 11:30       ` Mel Gorman
2013-01-26  2:00 ` [PATCH 5/11] ksm: get_ksm_page locked Hugh Dickins
2013-01-27  2:36   ` Simon Jeons
2013-01-27 22:08     ` Hugh Dickins
2013-01-28  0:36       ` Simon Jeons
2013-01-28  3:35         ` Hugh Dickins
2013-01-27  2:48   ` Simon Jeons
2013-01-27 22:10     ` Hugh Dickins
2013-02-05 17:18   ` Mel Gorman
2013-02-08  0:33     ` Hugh Dickins
2013-02-14 11:34       ` Mel Gorman
2013-01-26  2:01 ` [PATCH 6/11] ksm: remove old stable nodes more thoroughly Hugh Dickins
2013-01-27  4:55   ` Simon Jeons
2013-01-27 23:05     ` Hugh Dickins
2013-01-28  1:42       ` Simon Jeons
2013-01-28  4:14         ` Hugh Dickins
2013-01-28  2:12   ` Simon Jeons
2013-01-28  4:19     ` Hugh Dickins
2013-01-28  6:36   ` Simon Jeons
2013-01-28 23:44   ` Andrew Morton [this message]
2013-01-29  2:03     ` Hugh Dickins
2013-02-05 17:55   ` Mel Gorman
2013-02-08 19:33     ` Hugh Dickins
2013-02-14 11:58       ` Mel Gorman
2013-02-14 22:19         ` Hugh Dickins
2013-01-26  2:03 ` [PATCH 7/11] ksm: make KSM page migration possible Hugh Dickins
2013-01-27  5:47   ` Simon Jeons
2013-01-27 23:12     ` Hugh Dickins
2013-01-28  0:41       ` Simon Jeons
2013-01-28  3:44         ` Hugh Dickins
2013-02-05 19:11   ` Mel Gorman
2013-02-08 20:52     ` Hugh Dickins
2013-01-26  2:05 ` [PATCH 8/11] ksm: make !merge_across_nodes migration safe Hugh Dickins
2013-01-27  8:49   ` Simon Jeons
2013-01-27 23:25     ` Hugh Dickins
2013-01-28  3:44   ` Simon Jeons
2013-01-26  2:06 ` [PATCH 9/11] ksm: enable KSM page migration Hugh Dickins
2013-01-26  2:07 ` [PATCH 10/11] mm: remove offlining arg to migrate_pages Hugh Dickins
2013-01-26  2:10 ` [PATCH 11/11] ksm: stop hotremove lockdep warning Hugh Dickins
2013-01-27  6:23   ` Simon Jeons
2013-01-27 23:35     ` Hugh Dickins
2013-02-08 18:45   ` Gerald Schaefer
2013-02-11 22:13     ` Hugh Dickins
2013-01-28 23:54 ` [PATCH 0/11] ksm: NUMA trees and page migration Andrew Morton
2013-01-29  0:49   ` Izik Eidus
2013-01-29  2:26     ` Izik Eidus
2013-01-29 16:51       ` Andrea Arcangeli
2013-01-31  0:05         ` Ric Mason
2013-01-29  1:07   ` Hugh Dickins
2013-01-29 10:45     ` Gleb Natapov

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