linux-kernel - Re: [PATCH] mm/filemap: Implement fast short reads

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Message-ID: <202510181054.Fmf1S18u-lkp@intel.com>
Date: Sat, 18 Oct 2025 10:38:42 +0800
From: kernel test robot <lkp@...el.com>
To: Kiryl Shutsemau <kirill@...temov.name>,
	Andrew Morton <akpm@...ux-foundation.org>,
	David Hildenbrand <david@...hat.com>,
	Matthew Wilcox <willy@...radead.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Alexander Viro <viro@...iv.linux.org.uk>,
	Christian Brauner <brauner@...nel.org>, Jan Kara <jack@...e.cz>
Cc: oe-kbuild-all@...ts.linux.dev,
	Linux Memory Management List <linux-mm@...ck.org>,
	LKML <linux-kernel@...r.kernel.org>, linux-fsdevel@...r.kernel.org,
	Kiryl Shutsemau <kas@...nel.org>
Subject: Re: [PATCH] mm/filemap: Implement fast short reads

Hi Kiryl,

kernel test robot noticed the following build errors:

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

url:    https://github.com/intel-lab-lkp/linux/commits/Kiryl-Shutsemau/mm-filemap-Implement-fast-short-reads/20251017-221655
base:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything
patch link:    https://lore.kernel.org/r/20251017141536.577466-1-kirill%40shutemov.name
patch subject: [PATCH] mm/filemap: Implement fast short reads
config: riscv-randconfig-001-20251018 (https://download.01.org/0day-ci/archive/20251018/202510181054.Fmf1S18u-lkp@intel.com/config)
compiler: riscv32-linux-gcc (GCC) 8.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251018/202510181054.Fmf1S18u-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/202510181054.Fmf1S18u-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from include/linux/sched.h:45,
                    from include/linux/rcupdate.h:27,
                    from include/linux/rculist.h:11,
                    from include/linux/dcache.h:8,
                    from include/linux/fs.h:9,
                    from fs/inode.c:7:
   fs/inode.c: In function '__address_space_init_once':
>> fs/inode.c:486:28: error: invalid type argument of '->' (have 'struct xarray')
              &mapping->i_pages->xa_lock);
                               ^~
   include/linux/seqlock_types.h:57:26: note: in definition of macro '__SEQ_LOCK'
    #define __SEQ_LOCK(expr) expr
                             ^~~~
   include/linux/seqlock.h:131:42: note: in expansion of macro 'seqcount_LOCKNAME_init'
    #define seqcount_spinlock_init(s, lock)  seqcount_LOCKNAME_init(s, lock, spinlock)
                                             ^~~~~~~~~~~~~~~~~~~~~~
   fs/inode.c:485:2: note: in expansion of macro 'seqcount_spinlock_init'
     seqcount_spinlock_init(&mapping->i_pages_delete_seqcnt,
     ^~~~~~~~~~~~~~~~~~~~~~

Kconfig warnings: (for reference only)
   WARNING: unmet direct dependencies detected for ARCH_HAS_ELF_CORE_EFLAGS
   Depends on [n]: BINFMT_ELF [=n] && ELF_CORE [=n]
   Selected by [y]:
   - RISCV [=y]


vim +486 fs/inode.c

   481	
   482	static void __address_space_init_once(struct address_space *mapping)
   483	{
   484		xa_init_flags(&mapping->i_pages, XA_FLAGS_LOCK_IRQ | XA_FLAGS_ACCOUNT);
   485		seqcount_spinlock_init(&mapping->i_pages_delete_seqcnt,
 > 486				       &mapping->i_pages->xa_lock);
   487		init_rwsem(&mapping->i_mmap_rwsem);
   488		INIT_LIST_HEAD(&mapping->i_private_list);
   489		spin_lock_init(&mapping->i_private_lock);
   490		mapping->i_mmap = RB_ROOT_CACHED;
   491	}
   492	

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