On Tue, Jul 07, 2020 at 04:52:37PM +0100, Matthew Wilcox wrote: > But userspace has to _do_ something with that information anyway. So > it must already have somewhere to put that information. > > I do think that interpretation of that field should be a separate flag > from WRITE_APPEND so apps which genuinely don't care about where the I/O > ended up don't have to allocate some temporary storage. eg a logging > application which just needs to know that it managed to append to the > end of the log and doesn't need to do anything if it's successful.
I agree with the concept of a flag for just returning the write location. Because if you don't need that O_APPEND is all you need anyway.
