fs/namei.c:6321:9: sparse: sparse: cast from restricted gfp_t

fs/namei.c:6321:9: sparse: sparse: cast from restricted gfp_t

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   a635d6748234582ea287c5ffeae28b9b23f91c7e
commit: feb662d9168b63e1d4c02671ec96005410c6f3ce slab: support for compiler-assisted type-based slab cache partitioning
date:   8 weeks ago
config: mips-randconfig-r111-20260711 (https://download.01.org/0day-ci/archive/20260711/202607110912.nZTqfCrH-lkp@intel.com/config)
compiler: clang version 23.0.0git (https://github.com/llvm/llvm-project b3e6e6dabdc02153552a64fc74ff5c7532447eed)
sparse: v0.6.5-rc1
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260711/202607110912.nZTqfCrH-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
| Fixes: feb662d9168b ("slab: support for compiler-assisted type-based slab cache partitioning")
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202607110912.nZTqfCrH-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
   fs/namei.c:159:33: sparse: sparse: undefined identifier '__builtin_infer_alloc_token'
   fs/namei.c:159:33: sparse: sparse: undefined identifier '__builtin_infer_alloc_token'
   fs/namei.c:159:33: sparse: sparse: undefined identifier '__builtin_infer_alloc_token'
   fs/namei.c:793:12: sparse: sparse: undefined identifier '__builtin_infer_alloc_token'
   fs/namei.c:793:12: sparse: sparse: undefined identifier '__builtin_infer_alloc_token'
   fs/namei.c:793:12: sparse: sparse: undefined identifier '__builtin_infer_alloc_token'
>> fs/namei.c:6321:9: sparse: sparse: cast from restricted gfp_t

vim +6321 fs/namei.c

d60874cd58fcb21 Miklos Szeredi          2016-10-04  6299  
^1da177e4c3f415 Linus Torvalds          2005-04-16  6300  /* get the link contents into pagecache */
b4c173dfbb6c785 Miklos Szeredi          2025-02-20  6301  static char *__page_get_link(struct dentry *dentry, struct inode *inode,
fceef393a538134 Al Viro                 2015-12-29  6302  			     struct delayed_call *callback)
^1da177e4c3f415 Linus Torvalds          2005-04-16  6303  {
5f152cc012f42e1 Matthew Wilcox (Oracle  2025-05-14  6304) 	struct folio *folio;
6b2553918d8b4e6 Al Viro                 2015-11-17  6305  	struct address_space *mapping = inode->i_mapping;
6b2553918d8b4e6 Al Viro                 2015-11-17  6306  
d3883d4f9344934 Al Viro                 2015-11-17  6307  	if (!dentry) {
5f152cc012f42e1 Matthew Wilcox (Oracle  2025-05-14  6308) 		folio = filemap_get_folio(mapping, 0);
5f152cc012f42e1 Matthew Wilcox (Oracle  2025-05-14  6309) 		if (IS_ERR(folio))
6b2553918d8b4e6 Al Viro                 2015-11-17  6310  			return ERR_PTR(-ECHILD);
5f152cc012f42e1 Matthew Wilcox (Oracle  2025-05-14  6311) 		if (!folio_test_uptodate(folio)) {
5f152cc012f42e1 Matthew Wilcox (Oracle  2025-05-14  6312) 			folio_put(folio);
d3883d4f9344934 Al Viro                 2015-11-17  6313  			return ERR_PTR(-ECHILD);
d3883d4f9344934 Al Viro                 2015-11-17  6314  		}
d3883d4f9344934 Al Viro                 2015-11-17  6315  	} else {
5f152cc012f42e1 Matthew Wilcox (Oracle  2025-05-14  6316) 		folio = read_mapping_folio(mapping, 0, NULL);
5f152cc012f42e1 Matthew Wilcox (Oracle  2025-05-14  6317) 		if (IS_ERR(folio))
5f152cc012f42e1 Matthew Wilcox (Oracle  2025-05-14  6318) 			return ERR_CAST(folio);
d3883d4f9344934 Al Viro                 2015-11-17  6319  	}
4ec373b74e96f92 Matthew Wilcox (Oracle  2025-05-14  6320) 	set_delayed_call(callback, page_put_link, folio);
21fc61c73c3903c Al Viro                 2015-11-17 @6321  	BUG_ON(mapping_gfp_mask(mapping) & __GFP_HIGHMEM);
5f152cc012f42e1 Matthew Wilcox (Oracle  2025-05-14  6322) 	return folio_address(folio);
b4c173dfbb6c785 Miklos Szeredi          2025-02-20  6323  }
b4c173dfbb6c785 Miklos Szeredi          2025-02-20  6324  

:::::: The code at line 6321 was first introduced by commit
:::::: 21fc61c73c3903c4c312d0802da01ec2b323d174 don't put symlink bodies in pagecache into highmem

:::::: TO: Al Viro <viro@zeniv.linux.org.uk>
:::::: CC: Al Viro <viro@zeniv.linux.org.uk>

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