linux-kernel - Re: [PATCH] mm: add mmap_prepare() compatibility layer for nested file systems

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Message-ID: <202506092301.jUMzAZW1-lkp@intel.com>
Date: Mon, 9 Jun 2025 23:40:25 +0800
From: kernel test robot <lkp@...el.com>
To: Lorenzo Stoakes <lorenzo.stoakes@...cle.com>,
	Andrew Morton <akpm@...ux-foundation.org>
Cc: oe-kbuild-all@...ts.linux.dev,
	Linux Memory Management List <linux-mm@...ck.org>,
	Alexander Viro <viro@...iv.linux.org.uk>,
	Christian Brauner <brauner@...nel.org>, Jan Kara <jack@...e.cz>,
	"Liam R . Howlett" <Liam.Howlett@...cle.com>,
	Vlastimil Babka <vbabka@...e.cz>, Jann Horn <jannh@...gle.com>,
	Pedro Falcato <pfalcato@...e.de>, linux-fsdevel@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] mm: add mmap_prepare() compatibility layer for nested
 file systems

Hi Lorenzo,

kernel test robot noticed the following build warnings:

[auto build test WARNING on akpm-mm/mm-everything]

url:    https://github.com/intel-lab-lkp/linux/commits/Lorenzo-Stoakes/mm-add-mmap_prepare-compatibility-layer-for-nested-file-systems/20250609-172628
base:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything
patch link:    https://lore.kernel.org/r/20250609092413.45435-1-lorenzo.stoakes%40oracle.com
patch subject: [PATCH] mm: add mmap_prepare() compatibility layer for nested file systems
config: arc-randconfig-002-20250609 (https://download.01.org/0day-ci/archive/20250609/202506092301.jUMzAZW1-lkp@intel.com/config)
compiler: arc-linux-gcc (GCC) 10.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250609/202506092301.jUMzAZW1-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/202506092301.jUMzAZW1-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> Warning: mm/mmap.c:1921 function parameter 'vma' not described in 'compat_vma_mmap_prepare'

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