From mboxrd@z Thu Jan 1 00:00:00 1970 From: "majianpeng" Subject: Re: Re: md:When opened /proc/mdstat, increase the refcount of Date: Mon, 27 Feb 2012 09:21:50 +0800 Message-ID: <201202270921472184397@gmail.com> References: <201202261255005786849@gmail.com>, <201202261633221401738@gmail.com>, <20120226220120.3dbe3a3b@notabene.brown> Mime-Version: 1.0 Content-Type: text/plain; charset="gb2312" Content-Transfer-Encoding: base64 Return-path: Sender: linux-raid-owner@vger.kernel.org To: NeilBrown Cc: linux-raid List-Id: linux-raid.ids bXkgcGF0Y2ggaXM6DQotLS0NCiBmcy9wcm9jL2lub2RlLmMgfCAgIDEzICsrKysrKysrKysrLS0N CiAxIGZpbGVzIGNoYW5nZWQsIDExIGluc2VydGlvbnMoKyksIDIgZGVsZXRpb25zKC0pDQoNCmRp ZmYgLS1naXQgYS9mcy9wcm9jL2lub2RlLmMgYi9mcy9wcm9jL2lub2RlLmMNCmluZGV4IDg0ZmQz MjMuLjc4ZGJiMDMgMTAwNjQ0DQotLS0gYS9mcy9wcm9jL2lub2RlLmMNCisrKyBiL2ZzL3Byb2Mv aW5vZGUuYw0KQEAgLTMxNyw2ICszMTcsNyBAQCBzdGF0aWMgaW50IHByb2NfcmVnX29wZW4oc3Ry dWN0IGlub2RlICppbm9kZSwgc3RydWN0IGZpbGUgKmZpbGUpDQogCWludCAoKm9wZW4pKHN0cnVj dCBpbm9kZSAqLCBzdHJ1Y3QgZmlsZSAqKTsNCiAJaW50ICgqcmVsZWFzZSkoc3RydWN0IGlub2Rl ICosIHN0cnVjdCBmaWxlICopOw0KIAlzdHJ1Y3QgcGRlX29wZW5lciAqcGRlbzsNCisJY29uc3Qg c3RydWN0IGZpbGVfb3BlcmF0aW9ucyAqZm9wczsNCiANCiAJLyoNCiAJICogV2hhdCBmb3IsIHlv dSBhc2s/IFdlbGwsIHdlIGNhbiBoYXZlIG9wZW4sIHJtbW9kLCByZW1vdmVfcHJvY19lbnRyeQ0K QEAgLTMzOSw3ICszNDAsMTIgQEAgc3RhdGljIGludCBwcm9jX3JlZ19vcGVuKHN0cnVjdCBpbm9k ZSAqaW5vZGUsIHN0cnVjdCBmaWxlICpmaWxlKQ0KIAkJcmV0dXJuIC1FTk9FTlQ7DQogCX0NCiAJ cGRlLT5wZGVfdXNlcnMrKzsNCi0Jb3BlbiA9IHBkZS0+cHJvY19mb3BzLT5vcGVuOw0KKwkvKg0K KwkgKklmIHByb2NfZm9wcyBkZWZpbmVkIGluIG1vZHVsZSBhbmQgdXNlZCAub3duZXIgPSBUSElT X01PRFVMRSxzbyBvcGVuIG11c3QNCisJICpnZXQgYSByZWZlcmVuY2Ugb2YgbW9kdWxlLg0KKwkg Ki8NCisJZm9wcyA9IGZvcHNfZ2V0KHBkZS0+cHJvY19mb3BzKTsNCisJb3BlbiA9IGZvcHMtPm9w ZW47DQogCXJlbGVhc2UgPSBwZGUtPnByb2NfZm9wcy0+cmVsZWFzZTsNCiAJc3Bpbl91bmxvY2so JnBkZS0+cGRlX3VubG9hZF9sb2NrKTsNCiANCkBAIC0zNTQsOCArMzYwLDEwIEBAIHN0YXRpYyBp bnQgcHJvY19yZWdfb3BlbihzdHJ1Y3QgaW5vZGUgKmlub2RlLCBzdHJ1Y3QgZmlsZSAqZmlsZSkN CiAJCS8qIFN0cmljdGx5IGZvciAidG9vIGxhdGUiIC0+cmVsZWFzZSBpbiBwcm9jX3JlZ19yZWxl YXNlKCkuICovDQogCQlwZGVvLT5yZWxlYXNlID0gcmVsZWFzZTsNCiAJCWxpc3RfYWRkKCZwZGVv LT5saCwgJnBkZS0+cGRlX29wZW5lcnMpOw0KLQl9IGVsc2UNCisJfSBlbHNlCXsNCisJCWZvcHNf cHV0KHBkZS0+cHJvY19mb3BzKTsNCiAJCWtmcmVlKHBkZW8pOw0KKwl9DQogCV9fcGRlX3VzZXJz X2RlYyhwZGUpOw0KIAlzcGluX3VubG9jaygmcGRlLT5wZGVfdW5sb2FkX2xvY2spOw0KIAlyZXR1 cm4gcnY7DQpAQCAtNDAyLDYgKzQxMCw3IEBAIHN0YXRpYyBpbnQgcHJvY19yZWdfcmVsZWFzZShz dHJ1Y3QgaW5vZGUgKmlub2RlLCBzdHJ1Y3QgZmlsZSAqZmlsZSkNCiAJfQ0KIAlwZGUtPnBkZV91 c2VycysrOw0KIAlyZWxlYXNlID0gcGRlLT5wcm9jX2ZvcHMtPnJlbGVhc2U7DQorCWZvcHNfcHV0 KHBkZS0+cHJvY19mb3BzKTsNCiAJaWYgKHBkZW8pIHsNCiAJCWxpc3RfZGVsKCZwZGVvLT5saCk7 DQogCQlrZnJlZShwZGVvKTsNCg0KSSB0ZXN0ZWQgb2ssYnV0IEFsIFZpcm8gc2FpZCBkZWFkbG9j aywgSSBkaWQgbm90IHRlc3RlZC4NCg0KLS0tLS0tLS0tLS0tLS0tLS0tCQkJCSANCm1hamlhbnBl bmcNCjIwMTItMDItMjcNCg0KLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLS0t LS0tLS0tLS0tLS0tLS0tLS0tLS0tLQ0Kt6K8/sjLo7pOZWlsQnJvd24NCreiy83I1cbao7oyMDEy LTAyLTI2IDE5OjAxOjMyDQrK1bz+yMujum1hamlhbnBlbmcNCrOty82jumxpbnV4LXJhaWQNCtb3 zOKjulJlOiBtZDpXaGVuIG9wZW5lZCAvcHJvYy9tZHN0YXQsIGluY3JlYXNlIHRoZSByZWZjb3Vu dCBvZg0KDQpPbiBTdW4sIDI2IEZlYiAyMDEyIDE2OjMzOjI1ICswODAwICJtYWppYW5wZW5nIiA8 bWFqaWFucGVuZ0BnbWFpbC5jb20+IHdyb3RlOg0KDQo+IEkgd3JvdGUgYSBsZXR0ZXIgdG8gbWFp bnRhaW5lciBvZiBwcm9jZnMuIEhlJ3MgYW5zd2VyIGlzIGZvbGxvdzoNCj4gPk5vLiAgUmVhZCBy ZW1vdmVfcHJvY19lbnRyeSgpLCBlc3BlY2lhbGx5IHRoZSBwYXJ0IHVuZGVyIC0+cGRlX3VubG9h ZF9sb2NrLg0KPiA+VGhlIHdob2xlIGRhbW4gcG9pbnQgb2YgdGhhdCBzdHVmZiBpcyB0aGF0IG9w ZW5lZCBmaWxlIG9uIHByb2NmcyBkb2VzICpub3QqDQo+ID5waW4gdGhlIG1vZHVsZSBkb3duOyBJ TyBpbiBwcm9ncmVzcyBkb2VzLCBidXQgdGhhdCdzIGl0Lg0KPiA+WW91IGNhbid0IGRlYWRsb2Nr IHJtbW9kIGZvb2JhciA8L3Byb2MvY3JhcC9mb29iYXI7IHdpdGggeW91ciBwYXRjaCB3ZSdsbA0K PiA+YmUgYmFjayB0byBhIHBpbGUgb2YgZGVhZGxvY2tzIGluIHRoZXJlLg0KPiA+SU9XLCBOQUsu DQoNCkhtbW0uLi4gdGhhdCBzb3VuZHMgbGlrZSBBbCBWaXJvLg0KDQpJIHNlZSB0aGUgcG9pbnQg b2YgdGhhdCBjb2RlIG5vdy4gIEFuZCB5b3VyIHBhdGNoIHdvdWxkIGJlIG9wZW4gdG8gdGhlIHNh bWUNCnByb2JsZW0gd291bGRuJ3QgaXQuIGkuZS4NCiAgICBybW1vZCBtZF9tb2QgPCAvcHJvYy9t ZHN0YXQNCg0Kd291bGQgZGVhZGxvY2s/Pw0KDQpTbyB3ZSBzdGlsbCBuZWVkIHRvIGZpbmQgYSBm aXggdGhhdCBhY3R1YWxseSB3b3JrcyBjb3JyZWN0bHkuDQoNClRoYXQgcHJvYmFibHkgbWVhbnMg bW92aW5nIHRoZSBjYWxsIHRvICdwb2xsX3dhaXQnIGludG8gcHJvY2ZzIGNvZGUsIGFuZCB1c2lu Zw0KYSB3YWl0X3F1ZXVlX2hlYWQgd2hpY2ggaXMgbWFuYWdlZCBieSBwcm9jZnMuDQoNClNvIG1h eWJlOg0KIC0gcHV0IGEgd2FpdF9xdWV1ZV9oZWFkIGluICdzdHJ1Y3QgcHJvY19kaXJfZW50cnkn DQogLSBoYXZlIHByb2NfcmVnX3BvbGwgY2FsbCBwb2xsX3dhaXQgcGFzc2luZyB0aGF0IHdhaXRf cXVldWVfaGVhZA0KIC0gd3JpdGUgYSBmdW5jdGlvbiBlLmcuIHByb2NfcG9sbF93YWtlIHdoaWNo IGNhbGxzIHdha2VfdXAgb24gdGhhdA0KICAgd2FpdF9xdWV1ZV9oZWFkDQogLSBoYXZlIG1kLmMg c2F2ZSB0aGUgcmV0dXJuIHZhbHVlIGZyb20gcHJvY19jcmVhdGUsIGFuZCBjYWxsIHRoZSBhYm92 ZQ0KICAgZnVuY3Rpb24gaW5zdGVhZCBvZiBjYWxsaW5nICJ3YWtlX3VwKCZtZF9ldmVudF93YWl0 ZXJzKSINCg0KVGhhdCBzaG91bGQgd29yay4NCg0KTmVpbEJyb3duDQo=