From: William Dauchy <[email protected]>
To: Jens Axboe <[email protected]>
Cc: [email protected]
Subject: Re: SQPOLL behaviour with openat
Date: Sat, 4 Jan 2020 17:41:50 +0100 [thread overview]
Message-ID: <CAJ75kXZdwF4x0Od9BE5OD0vxbkuKR2UDHSfjaQ-yhjUkpx=r2A@mail.gmail.com> (raw)
In-Reply-To: <[email protected]>
Hello Jens,
Thank you for the quick answer.
On Sat, Jan 4, 2020 at 5:28 PM Jens Axboe <[email protected]> wrote:
> sqpoll requires the use of fixed files for any sqe, at least for now.
> That's why it returns -EBADF if the request doesn't have fixed files
> specified.
I indeed forgot sqe->flags |= IOSQE_FIXED_FILE; in my modified test.
> So it cannot be used with opcodes that create (or close) file
> descriptors either.
ok, I thought `dirfd` could have been the index of my registered fd
for `openat` call. It was not very clear to me this was not possible
to use fixed files for those opcodes.
Thanks,
--
William
next prev parent reply other threads:[~2020-01-04 16:42 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-04 16:22 SQPOLL behaviour with openat wdauchy
2020-01-04 16:28 ` Jens Axboe
2020-01-04 16:41 ` William Dauchy [this message]
2020-01-04 17:41 ` Jens Axboe
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