Evgeniy Polyakov <johnpol@xxxxxxxxxxx> writes: > > aio_sendfile_path() is essentially aio_sendfile(), except that it takes > source filename as parameter, has a pointer to private header > and its size (which allows to send header and file's content in one syscall > instead of three (open, send, sendfile) and returns opened file descriptor. Are you sure this is a useful optimization? Do you have numbers vs open+aio_sendfile+close? Compared to the cost of sending a complete file three system calls should be quite in the noise. And Linux system calls are not that expensive (few hundred cycles normally) Adding such compound system calls would be a worrying precedent because I'm sure others would want them then for their favourite system call combo too. If they were really useful it might make more sense to have a batch() system call that works for arbitary calls, but I'm not convinced yet it's even needed. It would be certainly ugly. -Andi - To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
