From mboxrd@z Thu Jan 1 00:00:00 1970 From: "=?ISO-8859-1?B?cmVtYXBlcg==?=" Subject: Re:[PATCH] fs/buffer.c: Remove the unnecessary init operation afterallocating buffer_head. Date: Fri, 19 Apr 2013 14:06:27 +0800 Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: base64 To: "=?ISO-8859-1?B?bGludXgtZnNkZXZlbA==?=" Return-path: Received: from mail-da0-f47.google.com ([209.85.210.47]:51632 "EHLO mail-da0-f47.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756029Ab3DSGGf (ORCPT ); Fri, 19 Apr 2013 02:06:35 -0400 Received: by mail-da0-f47.google.com with SMTP id s35so1783112dak.20 for ; Thu, 18 Apr 2013 23:06:35 -0700 (PDT) Sender: linux-fsdevel-owner@vger.kernel.org List-ID: aSBkb24ndCB1bmRlcnN0YW5kIHdoeSB0aGUgaW5pdF9idWZmZXIoKSBzaG91bGQgcmVsYXkg b24gdGhlIG1lbW9yeSBhbGxvY2F0aW9uIGJlaGF2aW9yLCA6KQ0KIA0KIA0KLS0tLS0tLS0t LS0tLS0tLS0tIE9yaWdpbmFsIC0tLS0tLS0tLS0tLS0tLS0tLQ0KRnJvbTogICJtYWppYW5w ZW5nIjxtYWppYW5wZW5nQGdtYWlsLmNvbT47DQpEYXRlOiAgRnJpLCBBcHIgMTksIDIwMTMg MTA6MjkgQU0NClRvOiAgIkFsIFZpcm8iPHZpcm9AemVuaXYubGludXgub3JnLnVrPjsgImFr cG0iPGFrcG1AbGludXgtZm91bmRhdGlvbi5vcmc+OyAidHl0c28iPHR5dHNvQG1pdC5lZHU+ OyANCkNjOiAgImxpbnV4LWZzZGV2ZWwiPGxpbnV4LWZzZGV2ZWxAdmdlci5rZXJuZWwub3Jn PjsgImxpbnV4LWtlcm5lbCI8bGludXgta2VybmVsQHZnZXIua2VybmVsLm9yZz47ICJsaW51 eC1leHQ0IjxsaW51eC1leHQ0QHZnZXIua2VybmVsLm9yZz47IA0KU3ViamVjdDogIFtQQVRD SF0gZnMvYnVmZmVyLmM6IFJlbW92ZSB0aGUgdW5uZWNlc3NhcnkgaW5pdCBvcGVyYXRpb24g YWZ0ZXJhbGxvY2F0aW5nIGJ1ZmZlcl9oZWFkLg0KDQogDQpCZWNhdXNlIGFsbG9jIHN0cnVj dCBidWZmZXJfaGVhZCB1c2luZyBrbWVtX2NhY2hlX3phbGxvYyxzbyBpdCdzIG5vdCBuZWVk IHRvDQpjYWxsICdpbml0X2J1ZmZlcihiaCwgTlVMTCwgTlVMTCknLg0KDQpTaWduZWQtb2Zm LWJ5OiBKaWFucGVuZyBNYSA8bWFqaWFucGVuZ0BnbWFpbC5jb20+DQotLS0NCiBmcy9idWZm ZXIuYyAgICAgICB8IDIgLS0NCiBmcy9qYmQvam91cm5hbC5jICB8IDEgLQ0KIGZzL2piZDIv am91cm5hbC5jIHwgMSAtDQogMyBmaWxlcyBjaGFuZ2VkLCA0IGRlbGV0aW9ucygtKQ0KDQpk aWZmIC0tZ2l0IGEvZnMvYnVmZmVyLmMgYi9mcy9idWZmZXIuYw0KaW5kZXggYjRkY2IzNC4u NTJiNzczOSAxMDA2NDQNCi0tLSBhL2ZzL2J1ZmZlci5jDQorKysgYi9mcy9idWZmZXIuYw0K QEAgLTg2NSw4ICs4NjUsNiBAQCB0cnlfYWdhaW46DQogDQogICAgICAgICAvKiBMaW5rIHRo ZSBidWZmZXIgdG8gaXRzIHBhZ2UgKi8NCiAgICAgICAgIHNldF9iaF9wYWdlKGJoLCBwYWdl LCBvZmZzZXQpOw0KLQ0KLSAgICAgICAgaW5pdF9idWZmZXIoYmgsIE5VTEwsIE5VTEwpOw0K ICAgICB9DQogICAgIHJldHVybiBoZWFkOw0KIC8qDQpkaWZmIC0tZ2l0IGEvZnMvamJkL2pv dXJuYWwuYyBiL2ZzL2piZC9qb3VybmFsLmMNCmluZGV4IDgxY2M3ZWEuLjBjM2ZlOTAgMTAw NjQ0DQotLS0gYS9mcy9qYmQvam91cm5hbC5jDQorKysgYi9mcy9qYmQvam91cm5hbC5jDQpA QCAtMzExLDcgKzMxMSw2IEBAIGludCBqb3VybmFsX3dyaXRlX21ldGFkYXRhX2J1ZmZlcih0 cmFuc2FjdGlvbl90ICp0cmFuc2FjdGlvbiwNCiAgICAgbmV3X2JoID0gYWxsb2NfYnVmZmVy X2hlYWQoR0ZQX05PRlN8X19HRlBfTk9GQUlMKTsNCiAgICAgLyoga2VlcCBzdWJzZXF1ZW50 IGFzc2VydGlvbnMgc2FuZSAqLw0KICAgICBuZXdfYmgtPmJfc3RhdGUgPSAwOw0KLSAgICBp bml0X2J1ZmZlcihuZXdfYmgsIE5VTEwsIE5VTEwpOw0KICAgICBhdG9taWNfc2V0KCZuZXdf YmgtPmJfY291bnQsIDEpOw0KICAgICBuZXdfamggPSBqb3VybmFsX2FkZF9qb3VybmFsX2hl YWQobmV3X2JoKTsgICAgLyogVGhpcyBzbGVlcHMgKi8NCiANCmRpZmYgLS1naXQgYS9mcy9q YmQyL2pvdXJuYWwuYyBiL2ZzL2piZDIvam91cm5hbC5jDQppbmRleCBlZDEwOTkxLi45NTEy MGM2IDEwMDY0NA0KLS0tIGEvZnMvamJkMi9qb3VybmFsLmMNCisrKyBiL2ZzL2piZDIvam91 cm5hbC5jDQpAQCAtMzY4LDcgKzM2OCw2IEBAIHJldHJ5X2FsbG9jOg0KIA0KICAgICAvKiBr ZWVwIHN1YnNlcXVlbnQgYXNzZXJ0aW9ucyBzYW5lICovDQogICAgIG5ld19iaC0+Yl9zdGF0 ZSA9IDA7DQotICAgIGluaXRfYnVmZmVyKG5ld19iaCwgTlVMTCwgTlVMTCk7DQogICAgIGF0 b21pY19zZXQoJm5ld19iaC0+Yl9jb3VudCwgMSk7DQogICAgIG5ld19qaCA9IGpiZDJfam91 cm5hbF9hZGRfam91cm5hbF9oZWFkKG5ld19iaCk7ICAgIC8qIFRoaXMgc2xlZXBzICovDQog DQotLSANCjEuOC4yLnJjMi40Lmc3Nzk5NTg4DQoNCi0tDQpUbyB1bnN1YnNjcmliZSBmcm9t IHRoaXMgbGlzdDogc2VuZCB0aGUgbGluZSAidW5zdWJzY3JpYmUgbGludXgtZnNkZXZlbCIg aW4NCnRoZSBib2R5IG9mIGEgbWVzc2FnZSB0byBtYWpvcmRvbW9Admdlci5rZXJuZWwub3Jn DQpNb3JlIG1ham9yZG9tbyBpbmZvIGF0ICBodHRwOi8vdmdlci5rZXJuZWwub3JnL21ham9y ZG9tby1pbmZvLmh0bWw=