Hi Sweet,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on kdave/for-next]
[also build test WARNING on linus/master v6.0-rc4 next-20220909]
[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/Sweet-Tea-Dorminy/btrfs-add-fscrypt-integration/20220906-101551
base:   https://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux.git for-next
config: loongarch-randconfig-s051-20220907
compiler: loongarch64-linux-gcc (GCC) 12.1.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # apt-get install sparse
        # sparse version: v0.6.4-39-gce1a6720-dirty
        # https://github.com/intel-lab-lkp/linux/commit/36f8808f448f0ed5f183f9de5a321409fbfbbaf0
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Sweet-Tea-Dorminy/btrfs-add-fscrypt-integration/20220906-101551
        git checkout 36f8808f448f0ed5f183f9de5a321409fbfbbaf0
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=loongarch SHELL=/bin/bash fs/crypto/

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@intel.com>

sparse warnings: (new ones prefixed by >>)
>> fs/crypto/crypto.c:94:34: sparse: sparse: restricted __le64 degrades to integer
   fs/crypto/crypto.c:94:47: sparse: sparse: restricted __le64 degrades to integer
>> fs/crypto/crypto.c:94:30: sparse: sparse: incorrect type in assignment (different base types) @@     expected restricted __le64 [usertype] lblk_num @@     got unsigned long long @@
   fs/crypto/crypto.c:94:30: sparse:     expected restricted __le64 [usertype] lblk_num
   fs/crypto/crypto.c:94:30: sparse:     got unsigned long long

vim +94 fs/crypto/crypto.c

    71	
    72	/*
    73	 * Generate the IV for the given logical block number within the given file.
    74	 * For filenames encryption, lblk_num == U64_MAX.
    75	 *
    76	 * Keep this in sync with fscrypt_limit_io_blocks().  fscrypt_limit_io_blocks()
    77	 * needs to know about any IV generation methods where the low bits of IV don't
    78	 * simply contain the lblk_num (e.g., IV_INO_LBLK_32).
    79	 */
    80	void fscrypt_generate_iv(union fscrypt_iv *iv, u64 lblk_num,
    81				 const struct fscrypt_info *ci)
    82	{
    83		u8 flags = fscrypt_policy_flags(&ci->ci_policy);
    84		struct inode *inode = ci->ci_inode;
    85		const struct fscrypt_operations *s_cop = inode->i_sb->s_cop;
    86	
    87		memset(iv, 0, ci->ci_mode->ivsize);
    88		if (s_cop->get_extent_context && lblk_num != U64_MAX) {
    89			size_t extent_offset;
    90			union fscrypt_extent_context ctx;
    91			int ret = fscrypt_get_extent_context(inode, lblk_num, &ctx, &extent_offset, NULL);
    92			WARN_ON_ONCE(ret != 0);
    93			memcpy(iv->raw, ctx.v1.iv, ci->ci_mode->ivsize);
  > 94			iv->lblk_num = iv->lblk_num + cpu_to_le64(extent_offset);
    95			return;
    96		}
    97	
    98		/*
    99		 * Filename encryption. For inode-based policies, filenames are
   100		 * encrypted as though they are lblk 0.
   101		 */
   102		if (lblk_num == U64_MAX)
   103			lblk_num = 0;
   104	
   105		if (flags & FSCRYPT_POLICY_FLAG_IV_INO_LBLK_64) {
   106			WARN_ON_ONCE(lblk_num > U32_MAX);
   107			WARN_ON_ONCE(inode->i_ino > U32_MAX);
   108			lblk_num |= (u64)inode->i_ino << 32;
   109		} else if (flags & FSCRYPT_POLICY_FLAG_IV_INO_LBLK_32) {
   110			WARN_ON_ONCE(lblk_num > U32_MAX);
   111			lblk_num = (u32)(ci->ci_hashed_ino + lblk_num);
   112		} else if (flags & FSCRYPT_POLICY_FLAG_DIRECT_KEY) {
   113			memcpy(iv->nonce, ci->ci_nonce, FSCRYPT_FILE_NONCE_SIZE);
   114		}
   115		iv->lblk_num = cpu_to_le64(lblk_num);
   116	}
   117	

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp