From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id D13FE46BC for ; Mon, 28 Aug 2023 10:34:15 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5421BC433C8; Mon, 28 Aug 2023 10:34:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1693218855; bh=tw+PZshW9n4Io/4K8o9aLUhy8XPHN69RWJ5kaJAKpYE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=irRmYEaHjECQJ1b6squyILrLIUIB+v1ExtMv3fGjeQ1aKLQ+Ar1e5CIX/CbJsUBD0 JrBQ1g9S/ttd3SgMdcxEQqrRVJV6IqO0JUDpORfwhaYaTks2UAdlQ44X5xsXCu/T5q k5uBa1VQXXKEl5LEjo1GLPBznUZkEdw08uXWeLNM= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Ming Lei , Jens Axboe Subject: [PATCH 6.1 108/122] ublk: remove check IO_URING_F_SQE128 in ublk_ch_uring_cmd Date: Mon, 28 Aug 2023 12:13:43 +0200 Message-ID: <20230828101200.019265245@linuxfoundation.org> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20230828101156.480754469@linuxfoundation.org> References: <20230828101156.480754469@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.1-stable review patch. If anyone has any objections, please let me know. ------------------ From: Ming Lei commit 9c7c4bc986932218fd0df9d2a100509772028fb1 upstream. sizeof(struct ublksrv_io_cmd) is 16bytes, which can be held in 64byte SQE, so not necessary to check IO_URING_F_SQE128. With this change, we get chance to save half SQ ring memory. Fixed: 71f28f3136af ("ublk_drv: add io_uring based userspace block driver") Signed-off-by: Ming Lei Link: https://lore.kernel.org/r/20230220041413.1524335-1-ming.lei@redhat.com Signed-off-by: Jens Axboe Signed-off-by: Greg Kroah-Hartman --- drivers/block/ublk_drv.c | 3 --- 1 file changed, 3 deletions(-) --- a/drivers/block/ublk_drv.c +++ b/drivers/block/ublk_drv.c @@ -1223,9 +1223,6 @@ static int __ublk_ch_uring_cmd(struct io __func__, cmd->cmd_op, ub_cmd->q_id, tag, ub_cmd->result); - if (!(issue_flags & IO_URING_F_SQE128)) - goto out; - if (ub_cmd->q_id >= ub->dev_info.nr_hw_queues) goto out;