From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751848AbcFJDgB (ORCPT ); Thu, 9 Jun 2016 23:36:01 -0400 Received: from mx0b-00082601.pphosted.com ([67.231.153.30]:7215 "EHLO mx0a-00082601.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1750994AbcFJDf6 (ORCPT ); Thu, 9 Jun 2016 23:35:58 -0400 Subject: Re: [PATCH] block: bio: kill BIO_MAX_SIZE To: Ming Lei , References: <1465529234-31195-1-git-send-email-ming.lei@canonical.com> CC: , Christoph Hellwig , "Mike Christie" , Hannes Reinecke , Keith Busch , Mike Snitzer From: Jens Axboe Message-ID: <575A3573.7010401@fb.com> Date: Thu, 9 Jun 2016 21:35:15 -0600 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.8.0 MIME-Version: 1.0 In-Reply-To: <1465529234-31195-1-git-send-email-ming.lei@canonical.com> Content-Type: text/plain; charset="windows-1252"; format=flowed Content-Transfer-Encoding: 7bit X-Originating-IP: [66.29.164.166] X-ClientProxiedBy: BLUPR14CA0032.namprd14.prod.outlook.com (10.163.77.170) To BLUPR15MB0451.namprd15.prod.outlook.com (10.163.214.17) X-MS-Office365-Filtering-Correlation-Id: 908072c5-f09e-43d6-678a-08d390e041ae X-Microsoft-Exchange-Diagnostics: 1;BLUPR15MB0451;2:qRzgk1JRZEtmXlZu45nL4N2cRpXpENxtReuAl5dDJOglcuqsBt9vr1EW9PckNMRvT1TVp7dYrCRm8ZVP9e2h9fHKHZNkLVlSfMVlMYonxrDXR1CfyP3f0rump8k2YB4giaSv5v30FpVeC+AN9praQ6Sm+V3ev8FYPET2wJW2X3wS4nH9yC5Zi7Epdp2M3Dgp;3:npNtXd2cBnKO5+/3uzVRrVQK2gKr1anFl42q4DQVWGi6Vz7ROR8DNLgngpVxTyjjMdmKPyqSgy6ERThxO+snKKsbVVmmiaF6KWtIwPpy8fLj1nW7QjK+sn7fFAMNBY1O X-Microsoft-Antispam: UriScan:;BCL:0;PCL:0;RULEID:;SRVR:BLUPR15MB0451; 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X-Microsoft-Exchange-Diagnostics: =?Windows-1252?Q?1;BLUPR15MB0451;23:o5moRIMvoors2boRg3LYxVpSmp0aonzhM9o5U?= =?Windows-1252?Q?d6SiFqIrK4HhAFMkUT/2ztIkJJ7Kr/1yFifC+jSbgK1Td4UDSuPbvfoy?= =?Windows-1252?Q?AifwL38WnEpc0a18XvGjf604NcFfcSFLyAWLIbJuVmrrBW4kjB8GGRo0?= =?Windows-1252?Q?7FDGxXNCtIXa1ERNOC+JCT0l3aPFXXFJHKUu6cPEyUFeD+fVhzb4gpsS?= =?Windows-1252?Q?4t4yd817PC4juUBq+WhzcrzJEKsVaa60CJtmyDaQsMuXBo6v2rvo+yw/?= =?Windows-1252?Q?+069Xzo0Jzut2btF1iwO0yba280CKMMBRp0f5xj58OnmBzeVG6zkdzuc?= =?Windows-1252?Q?htcgmva7Ail6NhVMLzFz1ZwTty29RlraVZ+VEXZVvJp819LVOpJO4OV6?= =?Windows-1252?Q?PdFpGh0aZhvU3A5nHq1NPCmxmDlWYWl4G+6ACMC4YrwzGVUXzT/gCp+8?= =?Windows-1252?Q?CHesCzRfKuWzIl8dFN6F0uiUSBHBNadloWRV6ImQ8bmmMd+UUDzt1VAb?= =?Windows-1252?Q?KAKlsXliKsi9sVEMP+Qv6yVS06ziwvoVzJq1nRuv3mSG29zE5yltuhi9?= =?Windows-1252?Q?p5DYGSba4w7nlrQ+Oyy65bwBe7RCrjs99SQSuUYrfQ3Fz8S8KX2GIO6M?= =?Windows-1252?Q?nnfyLAYteb5o2HSdEzmEyToW4vs1r77uCw0/hLWefRQsx6P+kR04NRxi?= =?Windows-1252?Q?Zsih9RE+ICH1WUnfPs8tHmSgTveVksaEZAZ+aEgHpOC2GjkD7xkz07uy?= =?Windows-1252?Q?gdIAts6Ukek46zdUa3gaYMVuiUoW49JMkCwdi9DVjBlrbg1qgzQQq/v5?= =?Windows-1252?Q?MVxzyI1g8GOlHFyy36/9l9An1UKpBfZ+cLNECzdRGtH7yOVILGK2AG1E?= =?Windows-1252?Q?NhYym3Xt/DYS6NrN5iLZaQcSSZ3+R/gWpdnmv5H+b8rMKSnUgHtVyRiv?= =?Windows-1252?Q?t7yingsG2BNsDxAQ/Z0sMaGZ3MnnO9isjYoCn34csNy5YAuCAoYDdRPb?= =?Windows-1252?Q?NEdVKIwd51BEHoD21sRjSokhee4CAizjNdaSCc5XUXmMIRnUvw8AjCRr?= =?Windows-1252?Q?fPX5zROk1stOWWCMQKevhrx7VfrHTlJzoJqZIH4hIcJ28DvzjmYC0Po0?= =?Windows-1252?Q?VbpDPvmCiyawddEP3J+klJgeBXuSJJM8xn3wuhgUmItDoaJ3LgjEfzVP?= =?Windows-1252?Q?f6rInp876DkQX7uV7+WN8v3J6jbZtUfOU76hzOWfe0w20rcyLQ9VbAQz?= =?Windows-1252?Q?/pkMaO0GARLJ73Pj/iAeDIQ8cN8Lp01wLuQ6F7qUD3A6UQdHN3B52cxb?= =?Windows-1252?Q?T6a1QMrPGy3wMUW5d4ZAB7BLlq2brKLAYkrJeDqQuVIbiQ=3D?= X-Microsoft-Exchange-Diagnostics: 1;BLUPR15MB0451;5:r5oKm5SC3973wCE/xpIEWcv7hnOjcwvyBv55vCAtA62yZ9JTuCcqXLi9OM/Ym8X+c1j/hUOVIqk8a/o5QQhRx1yrF8cwOVUfLtBc2vmKtfi/f4QZbKzN/+W3+wGUxnSWdaj1LE0oQvtMyVaal3MP3w==;24:k+bxpezA2Ik0oYsaXlg4Q5CfjioOS1ozW2qzyuSNadWU5XR72GfkjrJNw/gaHalxyjphQy+b+75QFz+hR8KI4Xn+K5l1Us1ThFJe693sqEE=;7:ElYBevjDo7Zb9Qq5feLP1MrRg8CnOb+01VKw2hHhnVPvvgKOY0AYiMjoZc+qKURgMPtkZBaJYznm1VUwfoFCwl0dgxzc2d0vLBi4kHXAQ9KWVQDVNjvQkp/AiwJI7lTdvQAUPfEV/nxULRsfpZAn1xH+CxkpAzdV7ivaDs7ZEOI4SDcY3Eq78qhePHuxnCfuuDeS3L6ngMIOrjLAs0bv5A==;20:EBGdUPjGHkwX/hECXUDYNM4/IxLAFI6MV/95Bxy4LXTSdiO81KQ0HosHKROUV/JsNyu+eLNmF3iKuAEnINVb3MEeMS3uQFBqnsahvtk4ge7YnTNiJWxpYCJdg3p1bgoSIQa/DGpf0cm/TQwiGViyC0w5Nxbmbz1Uq/7InsWvJ8M= SpamDiagnosticOutput: 1:99 SpamDiagnosticMetadata: NSPM X-MS-Exchange-CrossTenant-OriginalArrivalTime: 10 Jun 2016 03:35:21.5424 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-Transport-CrossTenantHeadersStamped: BLUPR15MB0451 X-OriginatorOrg: fb.com X-Proofpoint-Spam-Reason: safe X-FB-Internal: Safe X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2016-06-10_03:,, signatures=0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 06/09/2016 09:27 PM, Ming Lei wrote: > No one need this macro now, so remove it. Basically > only how many bvecs in one bio matters instead > of how many bytes in this bio. > > The motivation is for supporting multipage bvecs, in > which we only know what the max count of bvecs is supported > in the bio. Applied, thanks. -- Jens Axboe