函数逻辑报告

函数名称：For moronic filesystems that do not allow holes in file.* We may have to extend the file.

函数原型：int cont_write_begin(struct file *file, struct address_space *mapping, loff_t pos, unsigned len, unsigned flags, struct page **pagep, void **fsdata, get_block_t *get_block, loff_t *bytes)

返回类型：int

参数：