Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
From:   Jeff Moyer <jmoyer@redhat.com>
To:     adam.manzanares@wdc.com
Cc:     viro@zeniv.linux.org.uk, linux-fsdevel@vger.kernel.org,
        axboe@kernel.dk, bcrl@kvack.org, tglx@linutronix.de,
        mingo@kernel.org, pombredanne@nexb.com,
        kstewart@linuxfoundation.org, gregkh@linuxfoundation.org,
        bigeasy@linutronix.de, jack@suse.cz, darrick.wong@oracle.com,
        rgoldwyn@suse.com, linux-block@vger.kernel.org,
        linux-kernel@vger.kernel.org, linux-aio@kvack.org,
        linux-api@vger.kernel.org, hch@infradead.org
Subject: Re: [PATCH v5 0/5] AIO add per-command iopriority
In-Reply-To: <20180521160147.2372-1-adam.manzanares@wdc.com> (adam
        manzanares's message of "Mon, 21 May 2018 09:01:42 -0700")
References: <20180521160147.2372-1-adam.manzanares@wdc.com>
User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.3 (gnu/linux)
Date:   Mon, 21 May 2018 16:57:37 -0400
Message-ID: <x49fu2kvi9q.fsf@segfault.boston.devel.redhat.com>
MIME-Version: 1.0
Content-Type: text/plain
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

Hi, Adam,

adam.manzanares@wdc.com writes:

> From: Adam Manzanares <adam.manzanares@wdc.com>
>
> This is the per-I/O equivalent of the ioprio_set system call.
> See the following link for performance implications on a SATA HDD:
> https://lkml.org/lkml/2016/12/6/495
>
> First patch factors ioprio_check_cap function out of ioprio_set system call to
> also be used by the aio ioprio interface.
>
> Second patch converts kiocb ki_hint field to a u16 to avoid kiocb bloat.
>
> Third patch passes ioprio hint from aio iocb to kiocb and inititalizes kiocb
> ioprio value appropriately when it is not explicitly set.
>
> Fourth patch enables the feature for blkdev.
>
> Fifth patch enables the feature for iomap direct IO
>
> Note: this work is based on top of linux-vfs/for-next

I'll cook up a libaio test case.  Can you put together a man-pages
update for this?

Thanks!
Jeff