On 04.11.2021 15:37, Keith Busch wrote:
On Thu, Nov 04, 2021 at 06:34:31PM +0100, Christoph Hellwig wrote:
On Thu, Nov 04, 2021 at 10:32:35AM -0700, Darrick J. Wong wrote:
> I also wonder if it would be useful (since we're already having a
> discussion elsewhere about data integrity syscalls for pmem) to be able
> to call this sort of thing against files? In which case we'd want
> another preadv2 flag or something, and then plumb all that through the
> vfs/iomap as needed?
IFF we do this (can't answer if there is a need) we should not
overload read with it. It is an operation that does not return
data but just a status, so let's not get into that mess.
If there is a need for this, a new io_uring opcode seems like the
appropirate user facing interface for it.
+1 to this. I was looking at the patchset yesterday and this was one of
the questions I had. Any reasons to not do it this way Chaitanya?
