Re: [PATCH v3 2/3] sha1_file: open window into packfiles with O_CLOEXEC

On Thu, Oct 27, 2016 at 4:09 PM, Linus Torvalds
[off-list ref] wrote:

That said, now that I think about it, I should double-check: maybe
open() doesn't actually set atime at all, and we *could* do NOATIME
with SETFL after all.

Checked. Yup. O_NOATIME could easily be done with SETFL:, because as
with O_CLOEXEC, it only affects operations _after_ the open. The open
itself doesn't set the access time.

So I was full of it.

But the basic issue still remains - I'd really prefer to have NOATIME
stay around for all those poor misguided souls that for some reason
don't like "relatime" or run old kernels. But whether it is with
O_NOATIME at open time or with F_SETFL, I don't care.

            Linus