On Wed, Jan 17, 2007 at 05:39:51PM +0300, Evgeniy Polyakov wrote: > On Wed, Jan 17, 2007 at 07:21:42PM +0530, Suparna Bhattacharya (suparna@xxxxxxxxxx) wrote: > > > > Since you are implementing new APIs here, have you considered doing an > > aio_sendfilev to be able to send a header with the data ? > > It is doable, but why people do not like corking? > With Linux less than microsecond syscall overhead it is better and more > flexible solution, doesn't it? That is what I used to think as well. However ... The problem as I understand it now is not about bunching data together, but of ensuring some sort of atomicity between the header and the data, when there can be multiple outstanding aio requests on the same socket - i.e ensuring strict ordering without other data coming in between, when data to be sent is not already in cache, and in the meantime another sendfile or aio write requests comes in for the same socket. Without having to lock the socket when reading data from disk. There are alternate ways to address this, aio_sendfilev is one of the options I have heard people requesting. Regards Suparna > > I'm not saying - 'no, there will not be any *v variants', just getting > more info. > > > Regards > > Suparna > > -- > Evgeniy Polyakov -- Suparna Bhattacharya (suparna@xxxxxxxxxx) Linux Technology Center IBM Software Lab, India - 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
