Return-Path: linux-nfs-owner@vger.kernel.org Received: from umail.ceopen.cn ([202.10.79.62]:59186 "HELO ceopen.cn" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with SMTP id S1753000Ab2BAQPQ (ORCPT ); Wed, 1 Feb 2012 11:15:16 -0500 Date: Thu, 2 Feb 2012 00:09:01 +0800 From: "wangjing" To: "linux-nfs" References: <201202012212229514260@300.cn> Subject: may i ask a question about nfs fs ? thanks a lot. Message-ID: <201202020009007716206@300.cn> Mime-Version: 1.0 Content-Type: text/plain; charset="gb2312" Sender: linux-nfs-owner@vger.kernel.org List-ID: DQptYXkgaSBhc2sgYSBxdWVzdGlvbj8gdGhhbmtzIGEgbG90Lg0KDQp0aGUgYmFja2dyb3VuZA0K ICAgMaGiTGludXggZnMgaGFzICAgL25mc21udC93b3JrX3B1Yi93ZWIgYW5kIC9uZnNtbnQvd29y a19pbndvcmsvd2ViIKOsdGhleSB1c2UgTkZTIFYzIG1vdW50DQogICAyoaJ0aGVyZSBpcyBtYW55 IHByb2Nlc3Mgd2lsbCByZWFkIGFuZCB3cml0ZSBmaWxlcyBpbiB0aGUgZGlyIC9uZnNtbnQvd29y a19wdWIvd2ViIA0KICAgM6GiY3JvbiB3aWxsIGRlbCAgYWxsIGZpbGVzIGluIGRpciAgL25mc21u dC93b3JrX3B1Yi93ZWIgaW4gcGVyaW9ko6xhbmQgd2lsbCBjb3B5IGFsbCB0aGUgZmlsZXMgd2hp Y2ggaW4gdGhlIGRpciAvbmZzbW50L3dvcmtfaW53b3JrL3dlYiANCg0KaW4gc29tZSB0aW1lcyBk ZWxldGUgYWxsIGZpbGVzIGluICAvbmZzbW50L3dvcmtfcHViL3dlYiB3aWxsIGZhaWxkICxiZWNh dXNlIHRoZXJlIGlzIHNvbWUgLm5mc1hYWFgNCg0KDQoNCk15IHF1ZXN0aW9uIGlzIDpjYW4gaSBt b2RpZnkgbmZzX3NpbGx5cmVuYW1lIGZ1bm5jaW9uICBpbiB0aGUgZnMvbmZzL2Rpci5jICwgZ2Vu ZXJhbCBhbGwgLm5mc1hYWCBpbiAvdG1wLGFuZCBtYWtlIGtlcm5lbCA/DQoNCg0KDQpzdGF0aWMg aW50IG5mc19zaWxseXJlbmFtZShzdHJ1Y3QgaW5vZGUgKmRpciwgc3RydWN0IGRlbnRyeSAqZGVu dHJ5KQ0Kew0Kc3RhdGljIHVuc2lnbmVkIGludCBzaWxseWNvdW50ZXI7DQpjb25zdCBpbnQgICAg ICBpX2lub3NpemUgID0gc2l6ZW9mKGRpci0+aV9pbm8pKjI7DQpjb25zdCBpbnQgICAgICBjb3Vu dGVyc2l6ZSA9IHNpemVvZihzaWxseWNvdW50ZXIpKjI7DQpjb25zdCBpbnQgICAgICBzbGVuICAg ICAgID0gc3RybGVuKCIubmZzIikgKyBpX2lub3NpemUgKyBjb3VudGVyc2l6ZTsNCmNoYXIgICAg ICAgICAgIHNpbGx5W3NsZW4rMV07DQpzdHJ1Y3QgcXN0ciAgICBxc2lsbHk7DQpzdHJ1Y3QgZGVu dHJ5ICpzZGVudHJ5Ow0KaW50ICAgICAgICAgICAgZXJyb3IgPSAtRUlPOw0KZGZwcmludGsoVkZT LCAiTkZTOiBzaWxseS1yZW5hbWUoJXMvJXMsIGN0PSVkKVxuIiwNCmRlbnRyeS0+ZF9wYXJlbnQt PmRfbmFtZS5uYW1lLCBkZW50cnktPmRfbmFtZS5uYW1lLCANCmF0b21pY19yZWFkKCZkZW50cnkt PmRfY291bnQpKTsNCmlmIChhdG9taWNfcmVhZCgmZGVudHJ5LT5kX2NvdW50KSA9PSAxKQ0KZ290 byBvdXQ7ICAvKiBObyBuZWVkIHRvIHNpbGx5IHJlbmFtZS4gKi8NCiNpZmRlZiBORlNfUEFSQU5P SUENCmlmICghZGVudHJ5LT5kX2lub2RlKQ0KcHJpbnRrKCJORlM6IHNpbGx5LXJlbmFtaW5nICVz LyVzLCBuZWdhdGl2ZSBkZW50cnk/P1xuIiwNCmRlbnRyeS0+ZF9wYXJlbnQtPmRfbmFtZS5uYW1l LCBkZW50cnktPmRfbmFtZS5uYW1lKTsNCiNlbmRpZg0KLyoNCiAqIFdlIGRvbid0IGFsbG93IGEg ZGVudHJ5IHRvIGJlIHNpbGx5LXJlbmFtZWQgdHdpY2UuDQogKi8NCmVycm9yID0gLUVCVVNZOw0K aWYgKGRlbnRyeS0+ZF9mbGFncyAmIERDQUNIRV9ORlNGU19SRU5BTUVEKQ0KZ290byBvdXQ7DQpz cHJpbnRmKHNpbGx5LCAiLm5mcyUqLipseCIsDQppX2lub3NpemUsIGlfaW5vc2l6ZSwgZGVudHJ5 LT5kX2lub2RlLT5pX2lubyk7DQpzZGVudHJ5ID0gTlVMTDsNCmRvIHsNCmNoYXIgKnN1ZmZpeCA9 IHNpbGx5ICsgc2xlbiAtIGNvdW50ZXJzaXplOw0KZHB1dChzZGVudHJ5KTsNCnNpbGx5Y291bnRl cisrOw0Kc3ByaW50ZihzdWZmaXgsICIlKi4qeCIsIGNvdW50ZXJzaXplLCBjb3VudGVyc2l6ZSwg c2lsbHljb3VudGVyKTsNCmRmcHJpbnRrKFZGUywgInRyeWluZyB0byByZW5hbWUgJXMgdG8gJXNc biIsDQogZGVudHJ5LT5kX25hbWUubmFtZSwgc2lsbHkpOw0Kc2RlbnRyeSA9IGxvb2t1cF9vbmUo c2lsbHksIGRlbnRyeS0+ZF9wYXJlbnQpOw0KLyoNCiAqIE4uQi4gQmV0dGVyIHRvIHJldHVybiBF QlVTWSBoZXJlIC4uLiBpdCBjb3VsZCBiZQ0KICogZGFuZ2Vyb3VzIHRvIGRlbGV0ZSB0aGUgZmls ZSB3aGlsZSBpdCdzIGluIHVzZS4NCiAqLw0KaWYgKElTX0VSUihzZGVudHJ5KSkNCmdvdG8gb3V0 Ow0KfSB3aGlsZShzZGVudHJ5LT5kX2lub2RlICE9IE5VTEwpOyAvKiBuZWVkIG5lZ2F0aXZlIGxv b2t1cCAqLw0KbmZzX3phcF9jYWNoZXMoZGlyKTsNCnFzaWxseS5uYW1lID0gc2lsbHk7DQpxc2ls bHkubGVuICA9IHN0cmxlbihzaWxseSk7DQplcnJvciA9IE5GU19QUk9UTyhkaXIpLT5yZW5hbWUo ZGlyLCAmZGVudHJ5LT5kX25hbWUsIGRpciwgJnFzaWxseSk7ICAvL2NhbiBpIG1vZGlmeSB0aGlz IHRvIHNvbHZlIG15IGlzc2l1ZSAgv8m38dDeuMQgtMu0prT6wuvAtL3ivvbOysziDQppZiAoIWVy cm9yKSB7DQpuZnNfcmVuZXdfdGltZXMoZGVudHJ5KTsNCmRfbW92ZShkZW50cnksIHNkZW50cnkp Ow0KZXJyb3IgPSBuZnNfYXN5bmNfdW5saW5rKGRlbnRyeSk7DQogIC8qIElmIHdlIHJldHVybiAw IHdlIGRvbid0IHVubGluayAqLw0KfQ0KZHB1dChzZGVudHJ5KTsNCm91dDoNCnJldHVybiBlcnJv cjsNCn0NCg0KDQoNCg0KMjAxMi0wMi0wMSANCndhbmdqaW5nDQo=