From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) by ml01.01.org (Postfix) with ESMTP id 5814B1A1F8D for ; Thu, 12 May 2016 12:36:28 -0700 (PDT) Date: Thu, 12 May 2016 13:36:24 -0600 From: Ross Zwisler Subject: Re: [PATCH 5/7] dax: New fault locking Message-ID: <20160512193624.GA20719@linux.intel.com> References: <1463070560-1979-1-git-send-email-jack@suse.cz> <1463070560-1979-6-git-send-email-jack@suse.cz> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <1463070560-1979-6-git-send-email-jack@suse.cz> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: linux-nvdimm-bounces@lists.01.org Sender: "Linux-nvdimm" To: Jan Kara Cc: Ted Tso , linux-nvdimm@lists.01.org, linux-fsdevel@vger.kernel.org, linux-ext4@vger.kernel.org List-ID: T24gVGh1LCBNYXkgMTIsIDIwMTYgYXQgMDY6Mjk6MThQTSArMDIwMCwgSmFuIEthcmEgd3JvdGU6 Cj4gQ3VycmVudGx5IERBWCBwYWdlIGZhdWx0IGxvY2tpbmcgaXMgcmFjeS4KPiAKPiBDUFUwICh3 cml0ZSBmYXVsdCkJCUNQVTEgKHJlYWQgZmF1bHQpCj4gCj4gX19kYXhfZmF1bHQoKQkJCV9fZGF4 X2ZhdWx0KCkKPiAgIGdldF9ibG9jayhpbm9kZSwgYmxvY2ssICZiaCwgMCkgLT4gbm90IG1hcHBl ZAo+IAkJCQkgIGdldF9ibG9jayhpbm9kZSwgYmxvY2ssICZiaCwgMCkKPiAJCQkJICAgIC0+IG5v dCBtYXBwZWQKPiAgIGlmICghYnVmZmVyX21hcHBlZCgmYmgpKQo+ICAgICBpZiAodm1mLT5mbGFn cyAmIEZBVUxUX0ZMQUdfV1JJVEUpCj4gICAgICAgZ2V0X2Jsb2NrKGlub2RlLCBibG9jaywgJmJo LCAxKSAtPiBhbGxvY2F0ZXMgYmxvY2tzCj4gICBpZiAocGFnZSkgLT4gbm8KPiAJCQkJICBpZiAo IWJ1ZmZlcl9tYXBwZWQoJmJoKSkKPiAJCQkJICAgIGlmICh2bWYtPmZsYWdzICYgRkFVTFRfRkxB R19XUklURSkgewo+IAkJCQkgICAgfSBlbHNlIHsKPiAJCQkJICAgICAgZGF4X2xvYWRfaG9sZSgp Owo+IAkJCQkgICAgfQo+ICAgZGF4X2luc2VydF9tYXBwaW5nKCkKPiAKPiBBbmQgd2UgYXJlIGlu IGEgc2l0dWF0aW9uIHdoZXJlIHdlIGZhaWwgaW4gZGF4X3JhZGl4X2VudHJ5KCkgd2l0aCAtRUlP Lgo+IAo+IEFub3RoZXIgcHJvYmxlbSB3aXRoIHRoZSBjdXJyZW50IERBWCBwYWdlIGZhdWx0IGxv Y2tpbmcgaXMgdGhhdCB0aGVyZSBpcwo+IG5vIHJhY2UtZnJlZSB3YXkgdG8gY2xlYXIgZGlydHkg dGFnIGluIHRoZSByYWRpeCB0cmVlLiBXZSBjYW4gYWx3YXlzCj4gZW5kIHVwIHdpdGggY2xlYW4g cmFkaXggdHJlZSBhbmQgZGlydHkgZGF0YSBpbiBDUFUgY2FjaGUuCj4gCj4gV2UgZml4IHRoZSBm aXJzdCBwcm9ibGVtIGJ5IGludHJvZHVjaW5nIGxvY2tpbmcgb2YgZXhjZXB0aW9uYWwgcmFkaXgK PiB0cmVlIGVudHJpZXMgaW4gREFYIG1hcHBpbmdzIGFjdGluZyB2ZXJ5IHNpbWlsYXJseSB0byBw YWdlIGxvY2sgYW5kIHRodXMKPiBzeW5jaHJvbml6aW5nIHByb3Blcmx5IGZhdWx0cyBhZ2FpbnN0 IHRoZSBzYW1lIG1hcHBpbmcgaW5kZXguIFRoZSBzYW1lCj4gbG9jayBjYW4gbGF0ZXIgYmUgdXNl ZCB0byBhdm9pZCByYWNlcyB3aGVuIGNsZWFyaW5nIHJhZGl4IHRyZWUgZGlydHkKPiB0YWcuCj4g Cj4gUmV2aWV3ZWQtYnk6IE5laWxCcm93biA8bmVpbGJAc3VzZS5jb20+Cj4gUmV2aWV3ZWQtYnk6 IFJvc3MgWndpc2xlciA8cm9zcy56d2lzbGVyQGxpbnV4LmludGVsLmNvbT4KPiBTaWduZWQtb2Zm LWJ5OiBKYW4gS2FyYSA8amFja0BzdXNlLmN6Pgo+IC0tLQo8Pgo+IEBAIC04OTcsMTMgKzExNjYs MTAgQEAgaW50IF9fZGF4X3BtZF9mYXVsdChzdHJ1Y3Qgdm1fYXJlYV9zdHJ1Y3QgKnZtYSwgdW5z aWduZWQgbG9uZyBhZGRyZXNzLAo+ICAJCSAqIHRoZSB3cml0ZSB0byBpbnNlcnQgYSBkaXJ0eSBl bnRyeS4KPiAgCQkgKi8KPiAgCQlpZiAod3JpdGUpIHsKPiAtCQkJZXJyb3IgPSBkYXhfcmFkaXhf ZW50cnkobWFwcGluZywgcGdvZmYsIGRheC5zZWN0b3IsCj4gLQkJCQkJdHJ1ZSwgdHJ1ZSk7Cj4g LQkJCWlmIChlcnJvcikgewo+IC0JCQkJZGF4X3BtZF9kYmcoJmJoLCBhZGRyZXNzLAo+IC0JCQkJ CQkiUE1EIHJhZGl4IGluc2VydGlvbiBmYWlsZWQiKTsKPiAtCQkJCWdvdG8gZmFsbGJhY2s7Cj4g LQkJCX0KPiArCQkJLyoKPiArCQkJICogV2Ugc2hvdWxkIGluc2VydCByYWRpeC10cmVlIGVudHJ5 IGFuZCBkaXJ0eSBpdCBoZXJlLgo+ICsJCQkgKiBGb3Igbm93IHRoaXMgaXMgYnJva2VuLi4uCj4g KwkJCSAqLwoKV2l0aCB0aGlzIGNoYW5nZSB0aGUgJ2Vycm9yJyB2YXJpYWJsZSBpbiBfX2RheF9w bWRfZmF1bHQoKSBpcyBub3cgdW51c2VkLApyZXN1bHRpbmcgaW4gYSBjb21waWxlciB3YXJuaW5n LgoKZnMvZGF4LmM6IEluIGZ1bmN0aW9uIOKAmF9fZGF4X3BtZF9mYXVsdOKAmToKZnMvZGF4LmM6 MTAxOTo2OiB3YXJuaW5nOiB1bnVzZWQgdmFyaWFibGUg4oCYZXJyb3LigJkgWy1XdW51c2VkLXZh cmlhYmxlXQogIGludCBlcnJvciwgcmVzdWx0ID0gMDsKICAgICAgICBeCgpfX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpMaW51eC1udmRpbW0gbWFpbGluZyBs aXN0CkxpbnV4LW52ZGltbUBsaXN0cy4wMS5vcmcKaHR0cHM6Ly9saXN0cy4wMS5vcmcvbWFpbG1h bi9saXN0aW5mby9saW51eC1udmRpbW0K