[ljs:project/cow-context 17/18] mm/page_idle.c:105:16: error: use of undeclared identifier 'folio_lock_anon_vma_read'

[ljs:project/cow-context 17/18] mm/page_idle.c:105:16: error: use of undeclared identifier 'folio_lock_anon_vma_read'

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/ljs/linux.git project/cow-context
head:   e02aa02fef8128743869032cb20d26f752cd9154
commit: d91a1a12c5871a70ef97dc4725f0ca758f210524 [17/18] HACK, tbh: mm: add pure CoW context mode
config: hexagon-allmodconfig (https://download.01.org/0day-ci/archive/20260507/202605071744.yAZ3Fsvu-lkp@intel.com/config)
compiler: clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260507/202605071744.yAZ3Fsvu-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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202605071744.yAZ3Fsvu-lkp@intel.com/

All errors (new ones prefixed by >>):

>> mm/page_idle.c:105:16: error: use of undeclared identifier 'folio_lock_anon_vma_read'
     105 |                 .anon_lock = folio_lock_anon_vma_read,
         |                              ^
   1 error generated.
--
>> mm/damon/ops-common.c:175:16: error: use of undeclared identifier 'folio_lock_anon_vma_read'
     175 |                 .anon_lock = folio_lock_anon_vma_read,
         |                              ^
   mm/damon/ops-common.c:239:16: error: use of undeclared identifier 'folio_lock_anon_vma_read'
     239 |                 .anon_lock = folio_lock_anon_vma_read,
         |                              ^
   2 errors generated.


vim +/folio_lock_anon_vma_read +105 mm/page_idle.c

33c3fc71c8cfa3 Vladimir Davydov        2015-09-09   96  
5acc17fd35e627 Kefeng Wang             2022-12-30   97  static void page_idle_clear_pte_refs(struct folio *folio)
33c3fc71c8cfa3 Vladimir Davydov        2015-09-09   98  {
33c3fc71c8cfa3 Vladimir Davydov        2015-09-09   99  	/*
6d4675e6013578 Minchan Kim             2022-05-19  100  	 * Since rwc.try_lock is unused, rwc is effectively immutable, so we
6d4675e6013578 Minchan Kim             2022-05-19  101  	 * can make it static to save some cycles and stack.
33c3fc71c8cfa3 Vladimir Davydov        2015-09-09  102  	 */
6d4675e6013578 Minchan Kim             2022-05-19  103  	static struct rmap_walk_control rwc = {
33c3fc71c8cfa3 Vladimir Davydov        2015-09-09  104  		.rmap_one = page_idle_clear_pte_refs_one,
2f031c6f042cb8 Matthew Wilcox (Oracle  2022-01-29 @105) 		.anon_lock = folio_lock_anon_vma_read,
33c3fc71c8cfa3 Vladimir Davydov        2015-09-09  106  	};
33c3fc71c8cfa3 Vladimir Davydov        2015-09-09  107  
4aed23a2f8aaaa Matthew Wilcox (Oracle  2022-01-29  108) 	if (!folio_mapped(folio) || !folio_raw_mapping(folio))
33c3fc71c8cfa3 Vladimir Davydov        2015-09-09  109  		return;
33c3fc71c8cfa3 Vladimir Davydov        2015-09-09  110  
95b34d66480bbc Lokesh Gidra            2025-09-23  111  	if (!folio_trylock(folio))
33c3fc71c8cfa3 Vladimir Davydov        2015-09-09  112  		return;
33c3fc71c8cfa3 Vladimir Davydov        2015-09-09  113  
84fbbe21894bb9 Matthew Wilcox (Oracle  2022-01-29  114) 	rmap_walk(folio, &rwc);
4aed23a2f8aaaa Matthew Wilcox (Oracle  2022-01-29  115) 	folio_unlock(folio);
33c3fc71c8cfa3 Vladimir Davydov        2015-09-09  116  }
33c3fc71c8cfa3 Vladimir Davydov        2015-09-09  117  

:::::: The code at line 105 was first introduced by commit
:::::: 2f031c6f042cb8a9b221a8b6b80e69de5170f830 mm/rmap: Convert rmap_walk() to take a folio

:::::: TO: Matthew Wilcox (Oracle) <willy@infradead.org>
:::::: CC: Matthew Wilcox (Oracle) <willy@infradead.org>

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