drm/i915: Check if the size is too big while creating shmem file
authorGwan-gyeong Mun <gwan-gyeong.mun@intel.com>
Wed, 28 Dec 2022 19:22:50 +0000 (21:22 +0200)
committerRodrigo Vivi <rodrigo.vivi@intel.com>
Fri, 30 Dec 2022 09:19:27 +0000 (04:19 -0500)
commit662c04e2b8c6fe8eb2f2b88c62e25c8241d0f793
tree30837f61018f2a6875a065f93d615137c467d7d3
parent6949aa0eadafec9f4e83920a798330025c049ce5
drm/i915: Check if the size is too big while creating shmem file

The __shmem_file_setup() function returns -EINVAL if size is greater than
MAX_LFS_FILESIZE. To handle the same error as other code that returns
-E2BIG when the size is too large, it add a code that returns -E2BIG when
the size is larger than the size that can be handled.

v4: If BITS_PER_LONG is 32, size > MAX_LFS_FILESIZE is always false, so it
    checks only when BITS_PER_LONG is 64.

Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Matthew Auld <matthew.auld@intel.com>
Cc: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Signed-off-by: Gwan-gyeong Mun <gwan-gyeong.mun@intel.com>
Reviewed-by: Nirmoy Das <nirmoy.das@intel.com>
Reviewed-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Reported-by: kernel test robot <lkp@intel.com>
Reviewed-by: Andrzej Hajda <andrzej.hajda@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221228192252.917299-5-gwan-gyeong.mun@intel.com
drivers/gpu/drm/i915/gem/i915_gem_shmem.c