From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Jianpeng Ma" Subject: [RFC PATCH] fs/direct-io.c: Add REQ_NOIDLE for last bio . Date: Fri, 10 Aug 2012 20:37:14 +0800 Message-ID: <201208102037120467864@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="gb2312" Content-Transfer-Encoding: base64 Cc: linux-fsdevel , linux-kernel To: viro Return-path: Sender: linux-kernel-owner@vger.kernel.org List-Id: linux-fsdevel.vger.kernel.org Rm9yIGxhc3QgYmlvIG9mIGRpbywgdGhlcmUgYXJlIG5vIGJpbyB3aWxsIGNvbWUuU28gc2V0IFJF UV9OT0lETEUuDQoNClNpZ25lZC1vZmYtYnk6IEppYW5wZW5nIE1hIDxtYWppYW5wZW5nQGdtYWls LmNvbT4NCi0tLQ0KIGZzL2RpcmVjdC1pby5jIHwgICAxNSArKysrKysrKysrKystLS0NCiAxIGZp bGUgY2hhbmdlZCwgMTIgaW5zZXJ0aW9ucygrKSwgMyBkZWxldGlvbnMoLSkNCg0KZGlmZiAtLWdp dCBhL2ZzL2RpcmVjdC1pby5jIGIvZnMvZGlyZWN0LWlvLmMNCmluZGV4IDFmYWY0Y2IuLjdjNjk1 OGYgMTAwNjQ0DQotLS0gYS9mcy9kaXJlY3QtaW8uYw0KKysrIGIvZnMvZGlyZWN0LWlvLmMNCkBA IC0xMjcsNiArMTI3LDcgQEAgc3RydWN0IGRpbyB7DQogCWludCBwYWdlX2Vycm9yczsJCS8qIGVy cm5vIGZyb20gZ2V0X3VzZXJfcGFnZXMoKSAqLw0KIAlpbnQgaXNfYXN5bmM7CQkJLyogaXMgSU8g YXN5bmMgPyAqLw0KIAlpbnQgaW9fZXJyb3I7CQkJLyogSU8gZXJyb3IgaW4gY29tcGxldGlvbiBw YXRoICovDQorCXNlY3Rvcl90IGVuZF9zZWN0b3I7CQkvKiB0aGUgbGFzdCBzZWN0b3IgZm9yIHRo aXMgZGlvICovDQogCXVuc2lnbmVkIGxvbmcgcmVmY291bnQ7CQkvKiBkaXJlY3RfaW9fd29ya2Vy KCkgYW5kIGJpb3MgKi8NCiAJc3RydWN0IGJpbyAqYmlvX2xpc3Q7CQkvKiBzaW5nbHkgbGlua2Vk IHZpYSBiaV9wcml2YXRlICovDQogCXN0cnVjdCB0YXNrX3N0cnVjdCAqd2FpdGVyOwkvKiB3YWl0 aW5nIHRhc2sgKE5VTEwgaWYgbm9uZSkgKi8NCkBAIC0zNjksMjEgKzM3MCwyOCBAQCBzdGF0aWMg aW5saW5lIHZvaWQgZGlvX2Jpb19zdWJtaXQoc3RydWN0IGRpbyAqZGlvLCBzdHJ1Y3QgZGlvX3N1 Ym1pdCAqc2RpbykNCiB7DQogCXN0cnVjdCBiaW8gKmJpbyA9IHNkaW8tPmJpbzsNCiAJdW5zaWdu ZWQgbG9uZyBmbGFnczsNCi0NCisJaW50IHJ3ID0gZGlvLT5ydzsNCiAJYmlvLT5iaV9wcml2YXRl ID0gZGlvOw0KIA0KIAlzcGluX2xvY2tfaXJxc2F2ZSgmZGlvLT5iaW9fbG9jaywgZmxhZ3MpOw0K IAlkaW8tPnJlZmNvdW50Kys7DQogCXNwaW5fdW5sb2NrX2lycXJlc3RvcmUoJmRpby0+YmlvX2xv Y2ssIGZsYWdzKTsNCiANCisJLyoNCisJICogSWYgYmlvIGlzIHRoZSBsYXN0IGZvciBkaW8sc28g bm8gYmlvIGNhbiBhcnJpdmUgZm9yIGxvdy1sZXZlbA0KKwkgKiB1bmxlc3MgdGhpcyBkaW8gY29t cGxldGVkLg0KKwkgKi8NCisJaWYgKGJpby0+Ymlfc2VjdG9yICsgYmlvX3NlY3RvcnMoYmlvKSA+ PSBkaW8tPmVuZF9zZWN0b3IpDQorCQlydyB8PSBSRVFfTk9JRExFOw0KKw0KIAlpZiAoZGlvLT5p c19hc3luYyAmJiBkaW8tPnJ3ID09IFJFQUQpDQogCQliaW9fc2V0X3BhZ2VzX2RpcnR5KGJpbyk7 DQogDQogCWlmIChzZGlvLT5zdWJtaXRfaW8pDQotCQlzZGlvLT5zdWJtaXRfaW8oZGlvLT5ydywg YmlvLCBkaW8tPmlub2RlLA0KKwkJc2Rpby0+c3VibWl0X2lvKHJ3LCBiaW8sIGRpby0+aW5vZGUs DQogCQkJICAgICAgIHNkaW8tPmxvZ2ljYWxfb2Zmc2V0X2luX2Jpbyk7DQogCWVsc2UNCi0JCXN1 Ym1pdF9iaW8oZGlvLT5ydywgYmlvKTsNCisJCXN1Ym1pdF9iaW8ocncsIGJpbyk7DQogDQogCXNk aW8tPmJpbyA9IE5VTEw7DQogCXNkaW8tPmJvdW5kYXJ5ID0gMDsNCkBAIC0xMTQ3LDYgKzExNTUs NyBAQCBkb19ibG9ja2Rldl9kaXJlY3RfSU8oaW50IHJ3LCBzdHJ1Y3Qga2lvY2IgKmlvY2IsIHN0 cnVjdCBpbm9kZSAqaW5vZGUsDQogDQogCWRpby0+aW5vZGUgPSBpbm9kZTsNCiAJZGlvLT5ydyA9 IHJ3Ow0KKwlkaW8tPmVuZF9zZWN0b3IgPSBlbmQgPj4gOTsNCiAJc2Rpby5ibGtiaXRzID0gYmxr Yml0czsNCiAJc2Rpby5ibGtmYWN0b3IgPSBpbm9kZS0+aV9ibGtiaXRzIC0gYmxrYml0czsNCiAJ c2Rpby5ibG9ja19pbl9maWxlID0gb2Zmc2V0ID4+IGJsa2JpdHM7DQotLSANCjEuNy45LjUNCg==