linux-kernel - Re: [PATCH 1/2] zram: introduce compressed data writeback

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Message-ID: <tykowgjsd2gogsufmlz5vrh4eov4gnwsawrqx65ckf2s24cqwm@utqeq2m3cgw3>
Date: Mon, 1 Dec 2025 18:10:32 +0900
From: Sergey Senozhatsky <senozhatsky@...omium.org>
To: kernel test robot <lkp@...el.com>
Cc: Sergey Senozhatsky <senozhatsky@...omium.org>, 
	Andrew Morton <akpm@...ux-foundation.org>, Richard Chang <richardycc@...gle.com>, 
	oe-kbuild-all@...ts.linux.dev, Linux Memory Management List <linux-mm@...ck.org>, 
	Brian Geffon <bgeffon@...gle.com>, Minchan Kim <minchan@...nel.org>, linux-kernel@...r.kernel.org, 
	linux-block@...r.kernel.org
Subject: Re: [PATCH 1/2] zram: introduce compressed data writeback

On (25/11/29 17:07), kernel test robot wrote:
> Hi Sergey,
> 
> kernel test robot noticed the following build warnings:
> 
> [auto build test WARNING on akpm-mm/mm-everything]
> [also build test WARNING on next-20251128]
> [cannot apply to axboe/for-next linus/master v6.18-rc7]
> [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/Sergey-Senozhatsky/zram-introduce-compressed-data-writeback/20251129-010716
> base:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything
> patch link:    https://lore.kernel.org/r/20251128170442.2988502-2-senozhatsky%40chromium.org
> patch subject: [PATCH 1/2] zram: introduce compressed data writeback
> config: x86_64-randconfig-011-20251129 (https://download.01.org/0day-ci/archive/20251129/202511291628.NZif1jdx-lkp@intel.com/config)
> compiler: gcc-14 (Debian 14.2.0-19) 14.2.0
> reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251129/202511291628.NZif1jdx-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/202511291628.NZif1jdx-lkp@intel.com/
> 
> All warnings (new ones prefixed by >>):
> 
> >> drivers/block/zram/zram_drv.c:2099:12: warning: 'zram_read_from_zspool_raw' defined but not used [-Wunused-function]
>     2099 | static int zram_read_from_zspool_raw(struct zram *zram, struct page *page,
>          |            ^~~~~~~~~~~~~~~~~~~~~~~~~

Fixed in v2.  Thanks.