From mboxrd@z Thu Jan 1 00:00:00 1970 From: majianpeng Subject: [PATCH 1/2] fs/block-dev.c:fix performance regression in O_DIRECT writes to md block devices. Date: Mon, 16 Jul 2012 09:30:50 +0800 Message-ID: <201207160930466402203@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="gb2312" Content-Transfer-Encoding: base64 Cc: linux-raid , linux-fsdevel To: "Neil Brown" , viro Return-path: Received: from mail-pb0-f46.google.com ([209.85.160.46]:52350 "EHLO mail-pb0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751873Ab2GPB3u (ORCPT ); Sun, 15 Jul 2012 21:29:50 -0400 Sender: linux-fsdevel-owner@vger.kernel.org List-ID: Rm9yIHJlZ3VsYXIgZmlsZSwgd3JpdGUgb3BlcmFpb24gdXNlZCBibGtfcGx1ZyBmdW5jdGlvbi5C dXQgZm9yIGJsb2NrDQpmaWxlLHdyaXRlIG9wZXJhdGlvbiBkaWQgbm90IHVzZSBibGtfcGx1Zy4N Cg0KU2lnbmVkLW9mZi1ieTogSmlhbnBlbmcgTWEgPG1hamlhbnBlbmdAZ21haWwuY29tPg0KLS0t DQogZnMvYmxvY2tfZGV2LmMgfCAgICA3ICsrKysrKy0NCiAxIGZpbGVzIGNoYW5nZWQsIDYgaW5z ZXJ0aW9ucygrKSwgMSBkZWxldGlvbnMoLSkNCg0KZGlmZiAtLWdpdCBhL2ZzL2Jsb2NrX2Rldi5j IGIvZnMvYmxvY2tfZGV2LmMNCmluZGV4IGMyYmJlMWYuLjIyY2Q0MzYgMTAwNjQ0DQotLS0gYS9m cy9ibG9ja19kZXYuYw0KKysrIGIvZnMvYmxvY2tfZGV2LmMNCkBAIC0yMTUsOSArMjE1LDE0IEBA IGJsa2Rldl9kaXJlY3RfSU8oaW50IHJ3LCBzdHJ1Y3Qga2lvY2IgKmlvY2IsIGNvbnN0IHN0cnVj dCBpb3ZlYyAqaW92LA0KIHsNCiAJc3RydWN0IGZpbGUgKmZpbGUgPSBpb2NiLT5raV9maWxwOw0K IAlzdHJ1Y3QgaW5vZGUgKmlub2RlID0gZmlsZS0+Zl9tYXBwaW5nLT5ob3N0Ow0KKwlzdHJ1Y3Qg YmxrX3BsdWcgcGx1ZzsNCisJc3NpemVfdCByZXQ7DQogDQotCXJldHVybiBfX2Jsb2NrZGV2X2Rp cmVjdF9JTyhydywgaW9jYiwgaW5vZGUsIElfQkRFVihpbm9kZSksIGlvdiwgb2Zmc2V0LA0KKwli bGtfc3RhcnRfcGx1ZygmcGx1Zyk7DQorCXJldCA9ICBfX2Jsb2NrZGV2X2RpcmVjdF9JTyhydywg aW9jYiwgaW5vZGUsIElfQkRFVihpbm9kZSksIGlvdiwgb2Zmc2V0LA0KIAkJCQkgICAgbnJfc2Vn cywgYmxrZGV2X2dldF9ibG9ja3MsIE5VTEwsIE5VTEwsIDApOw0KKwlibGtfZmluaXNoX3BsdWco JnBsdWcpOw0KKwlyZXR1cm4gcmV0Ow0KIH0NCiANCiBpbnQgX19zeW5jX2Jsb2NrZGV2KHN0cnVj dCBibG9ja19kZXZpY2UgKmJkZXYsIGludCB3YWl0KQ0KLS0gDQoxLjcuNS40DQo=