From patchwork Tue Nov 7 14:18:27 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Minwoo Im X-Patchwork-Id: 10046765 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 1B6766031B for ; Tue, 7 Nov 2017 14:18:53 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 0E9AA28F5C for ; Tue, 7 Nov 2017 14:18:53 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 01B3529004; Tue, 7 Nov 2017 14:18:52 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.5 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, FREEMAIL_FROM, RCVD_IN_DNSWL_HI, RCVD_IN_SORBS_SPAM autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 904F628F5C for ; Tue, 7 Nov 2017 14:18:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751460AbdKGOSw (ORCPT ); Tue, 7 Nov 2017 09:18:52 -0500 Received: from mail-pg0-f65.google.com ([74.125.83.65]:46740 "EHLO mail-pg0-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751352AbdKGOSv (ORCPT ); Tue, 7 Nov 2017 09:18:51 -0500 Received: by mail-pg0-f65.google.com with SMTP id k7so11138594pga.3 for ; Tue, 07 Nov 2017 06:18:51 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id; bh=xRCLCLrkGjETuhmN3DYoy9CsqqxdL8qzxOGlAkXMuYU=; b=GPS7yjsyHXlhMH5OT7oiTVY9aWEG0+ttSwQ/nseg4y+YCX6+1Fo+qtZmQWeUttF+iD HnP1pUgWk1g3YJShALVyFq0MLhZtyGozN8v0g+XlSY1j0LP98fV3B22U2RLoXpbxgC9A KDGhXkOfeJXY8Yx8Pdhrj1MYILEEcnUcOa4GwZ2aoe6VAUXjm0iGk3bzdrKiK/6jSrgH r1cAZ6lZ/EIAkuzvFa3PqkAe7jfQEb5l7q+uoCkpzDITaz37h8/Td2gvaNC6ELDrL8Ke JIHEKzNnN8kc2IKwOJXOXTAuhdKZ4JLzGZoS4sDs4DzCwI5JUfl1VEd8g00QdN7+KrMZ klIw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id; bh=xRCLCLrkGjETuhmN3DYoy9CsqqxdL8qzxOGlAkXMuYU=; b=JFOFJ6EAeXvm+6gkVYY9TztVAYJcvw5HwXUAiFlSU/pOvlOtT2YWXuOnmL5HXaZIDX EWBqkBCT5NY6Ldg9u/3lGcn8wHpy7DXZs7P8yYkyK9IHMQRnQDVfLrQk4GqhVICZbitG v2g7jEyqJNKlZBqh17s5qkLcBwwVJ2+6xhsG7yCPa7GyAn2tXIE6cf+uA/yphc0TxD4q goMjCXKWRZme7xnCTicnjDPpYFH5fYeG0MIN0bajITDw+9mUInD1dxyW3GAm68asMLDt qg7nnH4KumWw2gNdbzIbb+SFghaim1XcIo4SqTycdRfvU/8GSlyqm26phXPJSb+9Fe5J DXBQ== X-Gm-Message-State: AMCzsaVEBEIDVUghYNqorLO0bwkd6aM81aYTVBth+Glyfku9pcCUefgo KkEcW56fVijWEjwPysIKoNU= X-Google-Smtp-Source: ABhQp+QGpGFtDklauqB8MQpXVZAfvjj3CrVzUrP8qUJqRxfbQ2UcOSXu/nnTOlgA80eiCFUmNJskxg== X-Received: by 10.99.3.1 with SMTP id 1mr19170597pgd.111.1510064330755; Tue, 07 Nov 2017 06:18:50 -0800 (PST) Received: from localhost.localdomain ([123.213.206.163]) by smtp.gmail.com with ESMTPSA id j1sm3809525pfj.108.2017.11.07.06.18.47 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Tue, 07 Nov 2017 06:18:49 -0800 (PST) From: Minwoo Im To: Jens Axboe Cc: linux-block@vger.kernel.org, Minwoo Im , Minwoo Im Subject: [PATCH] null_blk: add an usage for shared tags in documentation Date: Tue, 7 Nov 2017 23:18:27 +0900 Message-Id: <1510064307-20916-1-git-send-email-minwoo.im.dev@gmail.com> X-Mailer: git-send-email 2.7.4 Sender: linux-block-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP add usage explanation for a shared_tags of commit 82f402fefa50f1675bf918bcd009981bd6b30ac8 ("null_blk: add support for shared tags") to this documentation. Signed-off-by: Minwoo Im --- Documentation/block/null_blk.txt | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/Documentation/block/null_blk.txt b/Documentation/block/null_blk.txt index b7161c8..e1d1aa9 100644 --- a/Documentation/block/null_blk.txt +++ b/Documentation/block/null_blk.txt @@ -77,3 +77,8 @@ use_lightnvm=[0/1]: Default: 0 no_sched=[0/1]: Default: 0 0: nullb* use default blk-mq io scheduler. 1: nullb* doesn't use io scheduler. + +shared_tags=[0/1]: Default: 0 + 0: Tag set is not shared. + 1: Tag set shared between devices for blk-mq. + Requires nr_devices to be bigger than 1.