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Date:   Fri, 5 May 2017 08:21:34 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Wei Wang <wei.w.wang@...el.com>
Cc:     kbuild-all@...org, virtio-dev@...ts.oasis-open.org,
        linux-kernel@...r.kernel.org, qemu-devel@...gnu.org,
        virtualization@...ts.linux-foundation.org, kvm@...r.kernel.org,
        linux-mm@...ck.org, mst@...hat.com, david@...hat.com,
        dave.hansen@...el.com, cornelia.huck@...ibm.com,
        akpm@...ux-foundation.org, mgorman@...hsingularity.net,
        aarcange@...hat.com, amit.shah@...hat.com, pbonzini@...hat.com,
        wei.w.wang@...el.com, liliang.opensource@...il.com
Subject: Re: [PATCH v10 4/6] mm: function to offer a page block on the free
 list

Hi Wei,

[auto build test WARNING on linus/master]
[also build test WARNING on v4.11 next-20170504]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Wei-Wang/Extend-virtio-balloon-for-fast-de-inflating-fast-live-migration/20170505-052958
reproduce: make htmldocs

All warnings (new ones prefixed by >>):

   WARNING: convert(1) not found, for SVG to PDF conversion install ImageMagick (https://www.imagemagick.org)
   arch/x86/include/asm/uaccess_32.h:1: warning: no structured comments found
>> mm/page_alloc.c:4663: warning: No description found for parameter 'zone'
>> mm/page_alloc.c:4663: warning: No description found for parameter 'order'
>> mm/page_alloc.c:4663: warning: No description found for parameter 'migratetype'
>> mm/page_alloc.c:4663: warning: No description found for parameter 'page'
   include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results'
   include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request'
   include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results'
   include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request'
   include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results'
   include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request'
   include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results'
   include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request'
   include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results'
   include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request'
   include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results'
   include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request'
   include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results'
   include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request'
   include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results'
   include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request'
   include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results'
   include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request'
   include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results'
   include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request'
   include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results'
   include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request'
   include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results'
   include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request'
   include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results'
   include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request'
   include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results'
   include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request'
   include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results'
   include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request'
   include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results'
   include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request'
   include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results'
   include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request'
   include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results'
   include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request'
   include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results'
   include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request'
   include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results'
   include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request'
   include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results'
   include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request'
   include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results'
   include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request'
   include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results'
   include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request'
   include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results'
   include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request'
   include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results'
   include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request'
   include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results'
   include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request'
   include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results'
   include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request'
   include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results'
   include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request'
   include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results'
   include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request'
   include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results'
   include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request'
   include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results'
   include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request'
   include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results'
   include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request'
   include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results'
   include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request'
   include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results'
   include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request'
   include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results'
   include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request'
   include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results'
   include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request'
   include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results'
   include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request'
   include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results'
   include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request'
   include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results'
   include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request'
   include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results'
   include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request'
   include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results'
   include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request'
   include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results'
   include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request'
   include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results'
   include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request'
   include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results'
   include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request'
   include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results'
   include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request'
   include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results'
   include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request'
   include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results'
   include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request'
   include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results'
   include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request'
   include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results'
   include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request'
   include/net/cfg80211.h:1738: warning: No description found for parameter 'report_results'
   include/net/cfg80211.h:1738: warning: Excess struct/union/enum/typedef member 'results_wk' description in 'cfg80211_sched_scan_request'

vim +/zone +4663 mm/page_alloc.c

  4647	 * Heuristically get a page block in the system that is unused.
  4648	 * It is possible that pages from the page block are used immediately after
  4649	 * report_unused_page_block() returns. It is the caller's responsibility
  4650	 * to either detect or prevent the use of such pages.
  4651	 *
  4652	 * The free list to check: zone->free_area[order].free_list[migratetype].
  4653	 *
  4654	 * If the caller supplied page block (i.e. **page) is on the free list, offer
  4655	 * the next page block on the list to the caller. Otherwise, offer the first
  4656	 * page block on the list.
  4657	 *
  4658	 * Return 0 when a page block is found on the caller specified free list.
  4659	 */
  4660	int report_unused_page_block(struct zone *zone, unsigned int order,
  4661				     unsigned int migratetype, struct page **page)
  4662	{
> 4663		struct zone *this_zone;
  4664		struct list_head *this_list;
  4665		int ret = 0;
  4666		unsigned long flags;
  4667	
  4668		/* Sanity check */
  4669		if (zone == NULL || page == NULL || order >= MAX_ORDER ||
  4670		    migratetype >= MIGRATE_TYPES)
  4671			return -EINVAL;

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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