linux-kernel - fs/fscache/cookie.c:32:14: sparse: sparse: symbol 'fscache_lru_cookie_timeout' was not declared. Should it be static?

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Message-ID: <202201251717.ssGUprks-lkp@intel.com>
Date:   Tue, 25 Jan 2022 17:18:32 +0800
From:   kernel test robot <lkp@...el.com>
To:     David Howells <dhowells@...hat.com>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        Jeff Layton <jlayton@...nel.org>
Subject: fs/fscache/cookie.c:32:14: sparse: sparse: symbol
 'fscache_lru_cookie_timeout' was not declared. Should it be static?

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   dd81e1c7d5fb126e5fbc5c9e334d7b3ec29a16a0
commit: 12bb21a29c19aae50cfad4e2bb5c943108f34a7d fscache: Implement cookie user counting and resource pinning
date:   3 weeks ago
config: csky-randconfig-s032-20220120 (https://download.01.org/0day-ci/archive/20220125/202201251717.ssGUprks-lkp@intel.com/config)
compiler: csky-linux-gcc (GCC) 11.2.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # apt-get install sparse
        # sparse version: v0.6.4-dirty
        # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=12bb21a29c19aae50cfad4e2bb5c943108f34a7d
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 12bb21a29c19aae50cfad4e2bb5c943108f34a7d
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=csky SHELL=/bin/bash block// fs/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>


sparse warnings: (new ones prefixed by >>)
>> fs/fscache/cookie.c:32:14: sparse: sparse: symbol 'fscache_lru_cookie_timeout' was not declared. Should it be static?

vim +/fscache_lru_cookie_timeout +32 fs/fscache/cookie.c

    23	
    24	#define fscache_cookie_hash_shift 15
    25	static struct hlist_bl_head fscache_cookie_hash[1 << fscache_cookie_hash_shift];
    26	static LIST_HEAD(fscache_cookies);
    27	static DEFINE_RWLOCK(fscache_cookies_lock);
    28	static LIST_HEAD(fscache_cookie_lru);
    29	static DEFINE_SPINLOCK(fscache_cookie_lru_lock);
    30	DEFINE_TIMER(fscache_cookie_lru_timer, fscache_cookie_lru_timed_out);
    31	static DECLARE_WORK(fscache_cookie_lru_work, fscache_cookie_lru_worker);
  > 32	static const char fscache_cookie_states[FSCACHE_COOKIE_STATE__NR] = "-LCAIFUWRD";
    33	unsigned int fscache_lru_cookie_timeout = 10 * HZ;
    34	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org