Re: [PATCH] staging: android: ion: reduce lock contention latency

[kbuild test robot]

Hi Junil,

[auto build test WARNING on staging/staging-testing]
[also build test WARNING on v4.11-rc2 next-20170310]
[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/Junil-Lee/staging-android-ion-reduce-lock-contention-latency/20170317-021346
config: i386-randconfig-i0-201711 (attached as .config)
compiler: gcc-4.8 (Debian 4.8.4-1) 4.8.4
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

All warnings (new ones prefixed by >>):

   drivers/staging/android/ion/ion_page_pool.c: In function 
'ion_page_pool_remove':
>> drivers/staging/android/ion/ion_page_pool.c:68:9: warning: assignment from 
>> incompatible pointer type [enabled by default]
       node = llist_entry((struct list_head *)node, struct page, lru);
            ^
   drivers/staging/android/ion/ion_page_pool.c:74:9: warning: assignment from 
incompatible pointer type [enabled by default]
       node = llist_entry((struct list_head *)node, struct page, lru);
            ^

vim +68 drivers/staging/android/ion/ion_page_pool.c

    52                  llist_add((struct llist_node *)&page->lru, 
&pool->low_items);
    53                  atomic_inc(&pool->low_count);
    54          }
    55  
    56          return 0;
    57  }
    58  
    59  static struct page *ion_page_pool_remove(struct ion_page_pool *pool, 
bool high)
    60  {
    61          struct page *page = NULL;
    62          struct llist_node *node;
    63  
    64          if (high) {
    65                  BUG_ON(!atomic_read(&pool->high_count));
    66                  node = llist_del_first(&pool->high_items);
    67                  if (node)
  > 68                          node = llist_entry((struct list_head *)node, 
struct page, lru);
    69                  atomic_dec(&pool->high_count);
    70          } else {
    71                  BUG_ON(!atomic_read(&pool->low_count));
    72                  node = llist_del_first(&pool->low_items);
    73                  if (node)
    74                          node = llist_entry((struct list_head *)node, 
struct page, lru);
    75                  atomic_dec(&pool->low_count);
    76          }

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

.config.gz
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