On Thu, Mar 26, 2015 at 3:12 PM, Milosz Tanski <milosz@xxxxxxxxx> wrote: > On Thu, Mar 26, 2015 at 7:55 AM, Christoph Hellwig <hch@xxxxxxxxxxxxx> wrote: >> >> On Mon, Mar 16, 2015 at 02:27:10PM -0400, Milosz Tanski wrote: >> > This patchset introduces two new syscalls preadv2 and pwritev2. They are the >> > same syscalls as preadv and pwrite but with a flag argument. Additionally, >> > preadv2 implements an extra RWF_NONBLOCK flag. >> >> There was some arugment that we just don't wait and don't have the >> classic unix "blocking" semantics. Maybe it's time to bite the bullet >> and rename it to RWF_DONTWAIT? (I personally dont really care). > > > Sure. It is in line with the MSG_DONTWAIT flag for sendmsg() which > this whole idea is based on anyways. Okay, It's RWF_DONTWAIT now. I also split it into two RWF_DONTWAIT for the userspace API and IOCB_DONTWAIT that goes into kiocb->ki_flags. > >> >> >> Second this probably needs to be on top of Al's for-next tree: >> >> https://git.kernel.org/cgit/linux/kernel/git/viro/vfs.git/log/?h=for-next >> >> Note that this has a flags field in struct kiocb, so we could just use >> that for the flags. > > > Okay I started rebasing the patches on-top of that. I did see that > there is a new flags field "ki_flags". I see that there's already a > IOCB_EVENTFD flag. > > Did you see you Andres' question about making the flags a enum? I > usually wouldn't do that, because C++ is stronger when it comes enums, > you can't combine them then assignment them to an enum without a cast. > But in the kernel this doesn't matter. > >> >> >> Otherwise this version look fine to me, let's get it merged! >> >> Al, are yo ready to pick this up? I'd hate to miss another merge >> window. > > > Just got back from vacation today, I'll try to get this out before the > end of the week. I also have to make some adjustments to xfs-tests (to > push preadv2 into xfs_io). You'll see the patches and the pull request against viro/for-next branch tomorrow. The rebase was a bit of work since you guys changed a fair amount of stuff. > > > -- > Milosz Tanski > CTO > 16 East 34th Street, 15th floor > New York, NY 10016 > > p: 646-253-9055 > e: milosz@xxxxxxxxx P.S: Sorry for the double email / HTML spam. I'm not a my primary computer and apparently gmail randomly forgets that a thread is plain text only. Thanks gmail. -- Milosz Tanski CTO 16 East 34th Street, 15th floor New York, NY 10016 p: 646-253-9055 e: milosz@xxxxxxxxx -- To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
