linux-kernel - Re: linux-next: manual merge of the akpm-current tree with the block tree

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Date:	Mon, 2 Nov 2015 00:05:26 +0800
From:	kbuild test robot <lkp@...el.com>
To:	Stephen Rothwell <sfr@...b.auug.org.au>
Cc:	kbuild-all@...org, Andrew Morton <akpm@...ux-foundation.org>,
	Jens Axboe <axboe@...nel.dk>, linux-next@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Mel Gorman <mgorman@...hsingularity.net>,
	Dan Williams <dan.j.williams@...el.com>
Subject: Re: linux-next: manual merge of the akpm-current tree with the block
 tree

Hi Stephen,

[auto build test ERROR on block/for-next -- if it's inappropriate base, please suggest rules for selecting the more suitable base]

url:    https://github.com/0day-ci/linux/commits/Stephen-Rothwell/linux-next-manual-merge-of-the-akpm-current-tree-with-the-block-tree/20151101-235406
config: x86_64-randconfig-x019-201544 (attached as .config)
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All errors (new ones prefixed by >>):

   block/blk-core.c: In function 'blk_queue_enter':
>> block/blk-core.c:641:8: error: implicit declaration of function 'gfpflags_allow_blocking' [-Werror=implicit-function-declaration]
      if (!gfpflags_allow_blocking(gfp))
           ^
   In file included from include/linux/linkage.h:4:0,
                    from include/linux/kernel.h:6,
                    from block/blk-core.c:14:
   block/blk-core.c: In function 'generic_make_request':
>> block/blk-core.c:2041:33: error: '__GFP_RECLAIM' undeclared (first use in this function)
      if (likely(blk_queue_enter(q, __GFP_RECLAIM) == 0)) {
                                    ^
   include/linux/compiler.h:165:40: note: in definition of macro 'likely'
    # define likely(x) __builtin_expect(!!(x), 1)
                                           ^
   block/blk-core.c:2041:33: note: each undeclared identifier is reported only once for each function it appears in
      if (likely(blk_queue_enter(q, __GFP_RECLAIM) == 0)) {
                                    ^
   include/linux/compiler.h:165:40: note: in definition of macro 'likely'
    # define likely(x) __builtin_expect(!!(x), 1)
                                           ^
   cc1: some warnings being treated as errors

vim +/gfpflags_allow_blocking +641 block/blk-core.c

   635		while (true) {
   636			int ret;
   637	
   638			if (percpu_ref_tryget_live(&q->q_usage_counter))
   639				return 0;
   640	
 > 641			if (!gfpflags_allow_blocking(gfp))
   642				return -EBUSY;
   643	
   644			ret = wait_event_interruptible(q->mq_freeze_wq,

---
0-DAY kernel test infrastructure                Open Source Technology Center
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Download attachment ".config.gz" of type "application/octet-stream" (25667 bytes)