Re: [PATCH v5 06/12] drm/i915: Use huge tmpfs mountpoint helpers

kernel test robot
2025-10-22T03:27:13Z

Hi Loïc,

kernel test robot noticed the following build errors:

[auto build test ERROR on next-20251021]
[also build test ERROR on v6.18-rc2]
[cannot apply to akpm-mm/mm-everything drm-misc/drm-misc-next linus/master v6.18-rc2 v6.18-rc1 v6.17]
[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/Lo-c-Molinari/drm-shmem-helper-Simplify-page-offset-calculation-in-fault-handler/20251021-193355
base: next-20251021
patch link: https://lore.kernel.org/r/20251021113049.17242-7-loic.molinari%40collabora.com
patch subject: [PATCH v5 06/12] drm/i915: Use huge tmpfs mountpoint helpers
config: x86_64-randconfig-003-20251022 (https://download.01.org/0day-ci/archive/20251022/202510221301.wU3TSqMg-lkp@intel.com/config)
compiler: gcc-13 (Debian 13.3.0-16) 13.3.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251022/202510221301.wU3TSqMg-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/202510221301.wU3TSqMg-lkp@intel.com/

All errors (new ones prefixed by >>):

drivers/gpu/drm/i915/gem/i915_gem_shmem.c: In function '__create_shmem':
>> drivers/gpu/drm/i915/gem/i915_gem_shmem.c:511:59: error: 'struct drm_device' has no member named 'huge_mnt'
511 | filp = shmem_file_setup_with_mnt(i915->drm.huge_mnt, "i915",
| ^

vim +511 drivers/gpu/drm/i915/gem/i915_gem_shmem.c

486
487 static int __create_shmem(struct drm_i915_private *i915,
488 struct drm_gem_object *obj,
489 resource_size_t size)
490 {
491 unsigned long flags = VM_NORESERVE;
492 struct file *filp;
493
494 drm_gem_private_object_init(&i915->drm, obj, size);
495
496 /* XXX: The __shmem_file_setup() function returns -EINVAL if size is
497 * greater than MAX_LFS_FILESIZE.
498 * To handle the same error as other code that returns -E2BIG when
499 * the size is too large, we add a code that returns -E2BIG when the
500 * size is larger than the size that can be handled.
501 * If BITS_PER_LONG is 32, size > MAX_LFS_FILESIZE is always false,
502 * so we only needs to check when BITS_PER_LONG is 64.
503 * If BITS_PER_LONG is 32, E2BIG checks are processed when
504 * i915_gem_object_size_2big() is called before init_object() callback
505 * is called.
506 */
507 if (BITS_PER_LONG == 64 && size > MAX_LFS_FILESIZE)
508 return -E2BIG;
509
510 if (drm_gem_has_huge_mnt(&i915->drm))
> 511 filp = shmem_file_setup_with_mnt(i915->drm.huge_mnt, "i915",
512 size, flags);
513 else
514 filp = shmem_file_setup("i915", size, flags);
515 if (IS_ERR(filp))
516 return PTR_ERR(filp);
517
518 /*
519 * Prevent -EFBIG by allowing large writes beyond MAX_NON_LFS on shmem
520 * objects by setting O_LARGEFILE.
521 */
522 if (force_o_largefile())
523 filp->f_flags |= O_LARGEFILE;
524
525 obj->filp = filp;
526 return 0;
527 }
528

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0-DAY CI Kernel Test Service