Re: [PATCH v2 18/19] mm, swap: drop the SWAP_HAS_CACHE flag
From: kernel test robot
Date: Mon Nov 17 2025 - 06:04:27 EST
Hi Kairui,
kernel test robot noticed the following build warnings:
[auto build test WARNING on 41218ede767f6b218185af65ce919d0cade75f6b]
url: https://github.com/intel-lab-lkp/linux/commits/Kairui-Song/mm-swap-rename-__read_swap_cache_async-to-swap_cache_alloc_folio/20251117-021532
base: 41218ede767f6b218185af65ce919d0cade75f6b
patch link: https://lore.kernel.org/r/20251117-swap-table-p2-v2-18-37730e6ea6d5%40tencent.com
patch subject: [PATCH v2 18/19] mm, swap: drop the SWAP_HAS_CACHE flag
config: alpha-defconfig (https://download.01.org/0day-ci/archive/20251117/202511171848.KXjpAtyR-lkp@xxxxxxxxx/config)
compiler: alpha-linux-gcc (GCC) 15.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251117/202511171848.KXjpAtyR-lkp@xxxxxxxxx/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@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202511171848.KXjpAtyR-lkp@xxxxxxxxx/
All warnings (new ones prefixed by >>):
>> mm/swapfile.c:88:19: warning: 'Unused_offset' defined but not used [-Wunused-const-variable=]
88 | static const char Unused_offset[] = "Unused swap offset entry ";
| ^~~~~~~~~~~~~
vim +/Unused_offset +88 mm/swapfile.c
^1da177e4c3f415 Linus Torvalds 2005-04-16 84
^1da177e4c3f415 Linus Torvalds 2005-04-16 85 static const char Bad_file[] = "Bad swap file entry ";
^1da177e4c3f415 Linus Torvalds 2005-04-16 86 static const char Unused_file[] = "Unused swap file entry ";
^1da177e4c3f415 Linus Torvalds 2005-04-16 87 static const char Bad_offset[] = "Bad swap offset entry ";
^1da177e4c3f415 Linus Torvalds 2005-04-16 @88 static const char Unused_offset[] = "Unused swap offset entry ";
^1da177e4c3f415 Linus Torvalds 2005-04-16 89
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