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From: Damien Le Moal <Damien.LeMoal@wdc.com>
To: Johannes Thumshirn <Johannes.Thumshirn@wdc.com>,
	Jens Axboe <axboe@kernel.dk>,
	"linux-block@vger.kernel.org" <linux-block@vger.kernel.org>,
	Paolo Valente <paolo.valente@linaro.org>,
	"linux-f2fs-devel@lists.sourceforge.net" 
	<linux-f2fs-devel@lists.sourceforge.net>,
	Jaegeuk Kim <jaegeuk@kernel.org>, Chao Yu <yuchao0@huawei.com>
Subject: Re: [PATCH v4 3/6] block: change ioprio_valid() to an inline function
Date: Wed, 11 Aug 2021 08:51:30 +0000	[thread overview]
Message-ID: <DM6PR04MB708110464CF08693EE8BFEABE7F89@DM6PR04MB7081.namprd04.prod.outlook.com> (raw)
In-Reply-To: PH0PR04MB7416DCAE9D84B4ED25E4C2ED9BF89@PH0PR04MB7416.namprd04.prod.outlook.com

On 2021/08/11 16:56, Johannes Thumshirn wrote:
> On 11/08/2021 05:37, Damien Le Moal wrote:
>> Change the ioprio_valid() macro in include/usapi/linux/ioprio.h to an                                        uapi ~^
> 
>> inline function declared on the kernel side in include/linux/ioprio.h.
>> Also improve checks on the class value by checking the upper bound
>> value.
> 
> But I think it needs to stay in include/uapi/linux/ioprio.h as it's there
> since the 2.6.x days (I've checked back to v2.6.39.4) so the chance of
> user-space using it is quite high.

include/uapi/linux/ioprio.h is being introduced with kernel 5.15. This user
header did not exist now and in previous kernels. include/linux/ioprio.h has
been around for a while though, but that is a kernel header, not an application
header.


-- 
Damien Le Moal
Western Digital Research

  reply	other threads:[~2021-08-11  8:51 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-11  3:36 [PATCH v4 0/6] IO priority fixes and improvements Damien Le Moal
2021-08-11  3:36 ` [PATCH v4 1/6] block: bfq: fix bfq_set_next_ioprio_data() Damien Le Moal
2021-08-11  3:36 ` [PATCH v4 2/6] block: improve ioprio class description comment Damien Le Moal
2021-08-11  3:36 ` [PATCH v4 3/6] block: change ioprio_valid() to an inline function Damien Le Moal
2021-08-11  7:56   ` Johannes Thumshirn
2021-08-11  8:51     ` Damien Le Moal [this message]
2021-08-11  9:14       ` Johannes Thumshirn
2021-08-11  3:37 ` [PATCH v4 4/6] block: fix IOPRIO_PRIO_CLASS() and IOPRIO_PRIO_VALUE() macros Damien Le Moal
2021-08-11  3:37 ` [PATCH v4 5/6] block: Introduce IOPRIO_NR_LEVELS Damien Le Moal
2021-08-11  3:37 ` [PATCH v4 6/6] block: fix default IO priority handling Damien Le Moal
2021-08-18  9:53 ` [PATCH v4 0/6] IO priority fixes and improvements Damien Le Moal
2021-08-18 13:24 ` Jens Axboe
2021-08-18 21:52   ` Damien Le Moal

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