linux-kernel - [PATCH v3 0/3] some fixes and clean up for mempolicy

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Message-ID: <1510882624-44342-1-git-send-email-xieyisheng1@huawei.com>
Date:   Fri, 17 Nov 2017 09:37:01 +0800
From:   Yisheng Xie <xieyisheng1@...wei.com>
To:     <akpm@...ux-foundation.org>, <vbabka@...e.cz>, <mhocko@...e.com>,
        <mingo@...nel.org>, <rientjes@...gle.com>,
        <n-horiguchi@...jp.nec.com>, <salls@...ucsb.edu>,
        <ak@...ux.intel.com>, <cl@...ux.com>
CC:     <linux-mm@...ck.org>, <linux-kernel@...r.kernel.org>,
        <linux-api@...r.kernel.org>, <tanxiaojun@...wei.com>
Subject: [PATCH v3 0/3] some fixes and clean up for mempolicy

This patchset is triggered by Xiojun's report of ltp test fail[1],
and I have sent a patch to resolve it by check nodes_empty of new_nodes[2].

The new version is to follow Vlastimil's suggestion, which fix by checking
the new_nodes value in function get_nodes. And I just split them to small
patches for easy to review and discussion. For more detail, please look
into each patches.

Change logs of v3:
 * remove patch get_nodes's mask miscalculation
 * check whether node is empty after AND current task node, and then nodes
   which have memory.

Change logs of v2:
 * fix get_nodes's mask miscalculation
 * remove redundant check in get_nodes
 * fix the check of nodemask from user - per Vlastimil

Any comment and complain is welome.

Thanks
Yisheng Xie

[1] https://patchwork.kernel.org/patch/10012005/
[2] https://patchwork.kernel.org/patch/10013329/

Yisheng Xie (3):
  mm/mempolicy: remove redundant check in get_nodes
  mm/mempolicy: fix the check of nodemask from user
  mm/mempolicy: add nodes_empty check in SYSC_migrate_pages

 mm/mempolicy.c | 35 +++++++++++++++++++++++++++--------
 1 file changed, 27 insertions(+), 8 deletions(-)

-- 
1.8.3.1