From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Google-Smtp-Source: AH8x226c6EuNnjPlS3LkMSDok5hjmfs2RJW0rkbZwnRhXoyQuwLhqb7OK82CNBPjBCVfiHbyKYJ+ ARC-Seal: i=1; a=rsa-sha256; t=1518597171; cv=none; d=google.com; s=arc-20160816; b=t9xYyCJ2kT08foBFHRsCOGLYYyxKfamj+23GIxKoGzfXwRdXYGZBt0C67hzISjyzpz Xzcp1wBZpJ9duU8WTOYOvS4P9RcnsNGmiX69oOogWdyQEYjhUt8V2AcSEeDdtKLlUQo1 2ylb9S01Dukqo88Vs4sWPMfjTdtkkbeEvh4PYtJiI4euo6qse48GT1rovJVDvW/vRSb0 znYDu3WdGGuk7Y8APVjVyh8VzY6dHD2Doao+HdxpEc/TZFdMQ2Ek/jOLSNElg5YVCwou AasrN0ubB9ZZPmwGqg6U4mXxisBfDmOgkeZ8lPowhLKKPjZx8++/h138KtX8LebzFUis BP5Q== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=content-transfer-encoding:mime-version:references:in-reply-to:date :to:from:subject:message-id:arc-authentication-results; bh=leEcykurPKH4vZrF3uIO3XlLnqRCnASPuU8dKA0xvdk=; b=R2wd9Qp55mbcYci5yqYxNAvCj3nXQftDlFMtDcU+TSWkjeVSnEeCKzOwf+NsnPbf4b nJ+DlByX6LCMTo08F3zU02VAYvBY0Gpz1IxTfWVVbxeDxycFXcDjL/oEg3RJmwCXgsfu /SDGeaZ40J/XAQiFcwyYoRz9uz4J+kFmN+NzMooQiS52qozULvL68g8lmGurAbkVspfH /uq7Bi9Yq301HYKPzD+0mjQ3p96CyyEUefewNjSj8RNGLm6Z8fa5lIvi+/SkBhkueLXn 9Rpc8TCofn2EF6mivqzGSNZ3OiSeXLAytqSQQbPvrJGvTM3V/nzeJJ0YZ5xoW8M+xhOL eoTw== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of jthumshirn@suse.de designates 195.135.220.15 as permitted sender) smtp.mailfrom=jthumshirn@suse.de Authentication-Results: mx.google.com; spf=pass (google.com: domain of jthumshirn@suse.de designates 195.135.220.15 as permitted sender) smtp.mailfrom=jthumshirn@suse.de Message-ID: <1518597168.24629.4.camel@suse.de> Subject: Re: [PATCH] lib/scatterlist: Add SG_CHAIN and SG_EMARK macros for LSB encodings From: Johannes Thumshirn To: Anshuman Khandual , linux-kernel@vger.kernel.org, gregkh@linuxfoundation.org, bart.vanassche@wdc.com, axboe@kernel.dk, chris@chris-wilson.co.uk, tvrtko.ursulin@intel.com Date: Wed, 14 Feb 2018 09:32:48 +0100 In-Reply-To: <20180214045804.9113-1-khandual@linux.vnet.ibm.com> References: <20180214045804.9113-1-khandual@linux.vnet.ibm.com> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.20.5 Mime-Version: 1.0 Content-Transfer-Encoding: 8bit X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: =?utf-8?q?1592351049846277975?= X-GMAIL-MSGID: =?utf-8?q?1592364548180620804?= X-Mailing-List: linux-kernel@vger.kernel.org List-ID: On Wed, 2018-02-14 at 10:28 +0530, Anshuman Khandual wrote: > This replaces scatterlist->page_link LSB encodings with SG_CHAIN and > SG_EMARK definitions without any functional change. > > Signed-off-by: Anshuman Khandual > --- >  include/linux/scatterlist.h | 23 +++++++++++++---------- >  1 file changed, 13 insertions(+), 10 deletions(-) > > diff --git a/include/linux/scatterlist.h > b/include/linux/scatterlist.h > index 22b2131bcdcd..63d00bdb2fb3 100644 > --- a/include/linux/scatterlist.h > +++ b/include/linux/scatterlist.h > @@ -65,16 +65,18 @@ struct sg_table { >   */ >   >  #define SG_MAGIC 0x87654321 > +#define SG_CHAIN 0x01 > +#define SG_EMARK 0x02 SG_EMARK sounds strange, what about SG_END? -- Johannes Thumshirn                                          Storage jthu mshirn@suse.de                                +49 911 74053 689 SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg GF: Felix Imendörffer, Jane Smithard, Graham Norton HRB 21284 (AG Nürnberg) Key fingerprint = EC38 9CAB C2C4 F25D 8600 D0D0 0393 969D 2D76 0850