fscrypt_zeroout_range
EXPORT_SYMBOL(fscrypt_zeroout_range);
return fscrypt_zeroout_range(inode, lblk, pblk, len);
ret = fscrypt_zeroout_range(inode, off, block, len);
int fscrypt_zeroout_range(const struct inode *inode, pgoff_t lblk,