linux-kernel - Re: [PATCH 2/2] nfsd: Don't leave work of closing files to a work queue.

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Date:   Tue, 5 Dec 2023 14:36:14 +0800
From:   kernel test robot <lkp@...el.com>
To:     NeilBrown <neilb@...e.de>, Al Viro <viro@...iv.linux.org.uk>,
        Christian Brauner <brauner@...nel.org>,
        Jens Axboe <axboe@...nel.dk>, Oleg Nesterov <oleg@...hat.com>,
        Chuck Lever <chuck.lever@...cle.com>,
        Jeff Layton <jlayton@...nel.org>,
        Ingo Molnar <mingo@...hat.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Juri Lelli <juri.lelli@...hat.com>,
        Vincent Guittot <vincent.guittot@...aro.org>
Cc:     oe-kbuild-all@...ts.linux.dev, linux-fsdevel@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-nfs@...r.kernel.org
Subject: Re: [PATCH 2/2] nfsd: Don't leave work of closing files to a work
 queue.

Hi NeilBrown,

kernel test robot noticed the following build warnings:

[auto build test WARNING on tip/sched/core]
[also build test WARNING on linus/master v6.7-rc4]
[cannot apply to brauner-vfs/vfs.all next-20231205]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/NeilBrown/Allow-a-kthread-to-declare-that-it-calls-task_work_run/20231204-094248
base:   tip/sched/core
patch link:    https://lore.kernel.org/r/20231204014042.6754-3-neilb%40suse.de
patch subject: [PATCH 2/2] nfsd: Don't leave work of closing files to a work queue.
config: sh-allmodconfig (https://download.01.org/0day-ci/archive/20231205/202312051443.02Ddb5pd-lkp@intel.com/config)
compiler: sh4-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231205/202312051443.02Ddb5pd-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202312051443.02Ddb5pd-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> fs/nfsd/filecache.c:431: warning: Function parameter or member 'nn' not described in 'nfsd_file_dispose_some'

vim +431 fs/nfsd/filecache.c

   425	
   426	/**
   427	 * nfsd_file_dispose_some
   428	 *
   429	 */
   430	void nfsd_file_dispose_some(struct nfsd_net *nn)
 > 431	{
   432		struct nfsd_fcache_disposal *l = nn->fcache_disposal;
   433		LIST_HEAD(dispose);
   434		int i;
   435	
   436		if (list_empty(&l->freeme))
   437			return;
   438		spin_lock(&l->lock);
   439		for (i = 0; i < 8 && !list_empty(&l->freeme); i++)
   440			list_move(l->freeme.next, &dispose);
   441		spin_unlock(&l->lock);
   442		if (!list_empty(&l->freeme))
   443			svc_wake_up(nn->nfsd_serv);
   444		nfsd_file_dispose_list(&dispose);
   445	}
   446	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki