Linux read系统调用之 page_cache_sync_readahead()
1 page_cache_sync_readahead()上篇文章说道在 do_generic_file_read() 函数中 label find_page 中调用 page_cache_sync_readahead() 启动同步预读。void page_cache_sync_readahead(struct address_space *mapping, struct ...