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DIR:OUT; SFP:1102; SCL:1; SRVR:AM0PR08MB2993; H:AM0PR08MB3572.eurprd08.prod.outlook.com; FPR:; SPF:None; LANG:en; PTR:InfoNoRecords; MX:1; A:1; received-spf: None (protection.outlook.com: virtuozzo.com does not designate permitted sender hosts) x-ms-exchange-senderadcheck: 1 x-microsoft-antispam-message-info: 6pNSURZdzyrezhtntFF2h7Ns0Idy4gUL0AGGJdS+8xxBzLB9+qF4C0mYKfkJcjkHaIHwdu+pAG2+Wx9obZFcbkz6D1X0Yc3mAGGgUbDCNPZi6pXMxCnQVRN4Sj+C0lgk4V3nITsxmql3I2mwG661KKMZNniFBcqmnHCKg+Z4zW2yyueAwiTSyp5TySjQ3MdAAXYsbIrif8lUBUc/xVHn3YEByH/8QhgGZYQoztTWmMxy0tOSBgX7Sw0/BhSHuwq8lgpP2JFOEfFT2L5Uu7I4bETOp9fbtGu5RwyJGzXC6XaMY44tVUdUrSWdm5vCX4mkyhAU27bqVX47Z2+teybZTephYbhLOra6/iMq5XknGdijvyoMgrggC6xqlmaNSR+3+AfPxsmSWJu/4L2tcKRKHVL7Ce7VxUdrQf/aeN7rAUk= Content-Type: text/plain; charset="utf-8" Content-ID: <90CC682A4D7D8C4FB3B6678A6231D692@eurprd08.prod.outlook.com> Content-Transfer-Encoding: base64 MIME-Version: 1.0 X-OriginatorOrg: virtuozzo.com X-MS-Exchange-CrossTenant-Network-Message-Id: 74b9bbb0-c01c-4cd6-232c-08d6effb73ea X-MS-Exchange-CrossTenant-originalarrivaltime: 13 Jun 2019 12:34:18.2446 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 0bc7f26d-0264-416e-a6fc-8352af79c58f X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-userprincipalname: vsementsov@virtuozzo.com X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM0PR08MB2993 X-detected-operating-system: by eggs.gnu.org: Windows 7 or 8 [fuzzy] X-Received-From: 40.107.13.110 Subject: Re: [Qemu-devel] [PATCH v5 07/42] block: *filtered_cow_child() for *has_zero_init() X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kevin Wolf , "qemu-devel@nongnu.org" Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" MTMuMDYuMjAxOSAxOjA5LCBNYXggUmVpdHogd3JvdGU6DQo+IGJkcnZfaGFzX3plcm9faW5pdCgp IGFuZCB0aGUgcmVsYXRlZCBiZHJ2X3VuYWxsb2NhdGVkX2Jsb2Nrc19hcmVfemVybygpDQo+IHNo b3VsZCB1c2UgYmRydl9maWx0ZXJlZF9jb3dfY2hpbGQoKSBpZiB0aGV5IHdhbnQgdG8gY2hlY2sg d2hldGhlciB0aGUNCj4gZ2l2ZW4gQkRTIGhhcyBhIENPVyBiYWNraW5nIGZpbGUuDQo+IA0KPiBT aWduZWQtb2ZmLWJ5OiBNYXggUmVpdHogPG1yZWl0ekByZWRoYXQuY29tPg0KPiAtLS0NCj4gICBi bG9jay5jIHwgNCArKy0tDQo+ICAgMSBmaWxlIGNoYW5nZWQsIDIgaW5zZXJ0aW9ucygrKSwgMiBk ZWxldGlvbnMoLSkNCj4gDQo+IGRpZmYgLS1naXQgYS9ibG9jay5jIGIvYmxvY2suYw0KPiBpbmRl eCBiZTE4MTMwOTQ0Li42NGQ2MTkwOTg0IDEwMDY0NA0KPiAtLS0gYS9ibG9jay5jDQo+ICsrKyBi L2Jsb2NrLmMNCj4gQEAgLTQ5MzMsNyArNDkzMyw3IEBAIGludCBiZHJ2X2hhc196ZXJvX2luaXQo QmxvY2tEcml2ZXJTdGF0ZSAqYnMpDQo+ICAgDQo+ICAgICAgIC8qIElmIEJTIGlzIGEgY29weSBv biB3cml0ZSBpbWFnZSwgaXQgaXMgaW5pdGlhbGl6ZWQgdG8NCj4gICAgICAgICAgdGhlIGNvbnRl bnRzIG9mIHRoZSBiYXNlIGltYWdlLCB3aGljaCBtYXkgbm90IGJlIHplcm9lcy4gICovDQo+IC0g ICAgaWYgKGJzLT5iYWNraW5nKSB7DQo+ICsgICAgaWYgKGJkcnZfZmlsdGVyZWRfY293X2NoaWxk KGJzKSkgew0KPiAgICAgICAgICAgcmV0dXJuIDA7DQo+ICAgICAgIH0NCg0KSG1tLCBpZiB5b3Ug YXJlIGZpeGluZyBiZHJ2X2hhc196ZXJvX2luaXQgYXJvdW5kIGZpbHRlcnMsIEknZCBwcmVmZXJl IHRvIGZpeCB0aGUgd2hvbGUNCmZ1bmN0aW9uLCBjb252ZXJ0aW5nIHRoZSBmb2xsb3dpbmcgaGVy ZSB0b286DQogICAgIGlmIChicy0+ZmlsZSAmJiBicy0+ZHJ2LT5pc19maWx0ZXIpIHsNCiAgICAg ICAgIHJldHVybiBiZHJ2X2hhc196ZXJvX2luaXQoYnMtPmZpbGUtPmJzKTsNCiAgICAgfQ0KDQoN CkJ1dCBpdCdzIG5vdCBhIHJlYWwgcHJvYmxlbToNCg0KUmV2aWV3ZWQtYnk6IFZsYWRpbWlyIFNl bWVudHNvdi1PZ2lldnNraXkgPHZzZW1lbnRzb3ZAdmlydHVvenpvLmNvbT4NCg0KPiAgICAgICBp ZiAoYnMtPmRydi0+YmRydl9oYXNfemVyb19pbml0KSB7DQo+IEBAIC00OTUxLDcgKzQ5NTEsNyBA QCBib29sIGJkcnZfdW5hbGxvY2F0ZWRfYmxvY2tzX2FyZV96ZXJvKEJsb2NrRHJpdmVyU3RhdGUg KmJzKQ0KPiAgIHsNCj4gICAgICAgQmxvY2tEcml2ZXJJbmZvIGJkaTsNCj4gICANCj4gLSAgICBp ZiAoYnMtPmJhY2tpbmcpIHsNCj4gKyAgICBpZiAoYmRydl9maWx0ZXJlZF9jb3dfY2hpbGQoYnMp KSB7DQo+ICAgICAgICAgICByZXR1cm4gZmFsc2U7DQo+ICAgICAgIH0NCj4gICANCj4gDQoNCg0K LS0gDQpCZXN0IHJlZ2FyZHMsDQpWbGFkaW1pcg0K