From: Christopher Lameter <cl@linux.com>
To: Yisheng Xie <xieyisheng1@huawei.com>
Cc: Vlastimil Babka <vbabka@suse.cz>,
akpm@linux-foundation.org, mhocko@suse.com, mingo@kernel.org,
rientjes@google.com, n-horiguchi@ah.jp.nec.com,
salls@cs.ucsb.edu, linux-mm@kvack.org,
linux-kernel@vger.kernel.org, tanxiaojun@huawei.com,
linux-api@vger.kernel.org, Andi Kleen <ak@linux.intel.com>
Subject: Re: [PATCH RFC v2 4/4] mm/mempolicy: add nodes_empty check in SYSC_migrate_pages
Date: Wed, 8 Nov 2017 09:02:36 -0600 (CST) [thread overview]
Message-ID: <alpine.DEB.2.20.1711080900050.6161@nuc-kabylake> (raw)
In-Reply-To: <4b08f1e9-5449-6ea2-e7da-65fe5f678683@huawei.com>
On Wed, 8 Nov 2017, Yisheng Xie wrote:
> Another case is current process is *not* the same as target process, and
> when current process try to migrate pages of target process from old_nodes
> to new_nodes, the new_nodes should be a subset of target process cpuset.
The caller of migrate_pages should be able to migrate the target process
pages anywhere the caller can allocate memory. If that is outside the
target processes cpuset then that is fine. Pagecache pages that are not
allocated by the target process already are not subject to the target
processes restriction. So this is not that unusual.
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next prev parent reply other threads:[~2017-11-08 15:02 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-27 10:14 [PATCH RFC v2 0/4] some fixes and clean up for mempolicy Yisheng Xie
2017-10-27 10:14 ` [PATCH RFC v2 1/4] mm/mempolicy: Fix get_nodes() mask miscalculation Yisheng Xie
2017-10-31 8:34 ` Vlastimil Babka
2017-11-01 9:37 ` Yisheng Xie
2017-10-27 10:14 ` [PATCH RFC v2 2/4] mm/mempolicy: remove redundant check in get_nodes Yisheng Xie
2017-10-31 8:55 ` Vlastimil Babka
2017-10-27 10:14 ` [PATCH RFC v2 3/4] mm/mempolicy: fix the check of nodemask from user Yisheng Xie
2017-10-31 9:30 ` Vlastimil Babka
2017-10-31 11:01 ` Yisheng Xie
2017-10-31 11:28 ` Vlastimil Babka
2017-10-27 10:14 ` [PATCH RFC v2 4/4] mm/mempolicy: add nodes_empty check in SYSC_migrate_pages Yisheng Xie
2017-10-31 9:46 ` Vlastimil Babka
2017-11-06 1:31 ` Yisheng Xie
2017-11-06 7:39 ` Vlastimil Babka
2017-11-06 15:29 ` Christopher Lameter
2017-11-07 11:23 ` Yisheng Xie
2017-11-07 14:54 ` Christopher Lameter
2017-11-07 15:05 ` Vlastimil Babka
2017-11-07 15:55 ` Christopher Lameter
2017-11-08 1:38 ` Yisheng Xie
2017-11-08 15:02 ` Christopher Lameter [this message]
2017-11-09 10:54 ` Yisheng Xie
2017-11-09 15:46 ` Christopher Lameter
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