From: Takashi Iwai Subject: Re: [PATCH] drm/fb-helper: Fix race between deferred_io worker and dirty updater Date: Thu, 20 Oct 2016 15:23:15 +0200 Message-ID: References: <20161020132055.9646-1-tiwai@suse.de> Mime-Version: 1.0 (generated by SEMI 1.14.6 - "Maruoka") Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from mx2.suse.de (mx2.suse.de [195.135.220.15]) by gabe.freedesktop.org (Postfix) with ESMTPS id A30756EB4B for ; Thu, 20 Oct 2016 13:23:17 +0000 (UTC) In-Reply-To: <20161020132055.9646-1-tiwai@suse.de> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: dri-devel@lists.freedesktop.org Cc: Daniel Vetter , linux-kernel@vger.kernel.org List-Id: dri-devel@lists.freedesktop.org T24gVGh1LCAyMCBPY3QgMjAxNiAxNToyMDo1NSArMDIwMCwKVGFrYXNoaSBJd2FpIHdyb3RlOgo+ IAo+IFNpbmNlIDQuNyBrZXJuZWwsIHdlJ3ZlIHNlZW4gdGhlIGVycm9yIG1lc3NhZ2VzIGxpa2UK PiAKPiAga2VybmVsOiBbVFRNXSBCdWZmZXIgZXZpY3Rpb24gZmFpbGVkCj4gIGtlcm5lbDogcXhs IDAwMDA6MDA6MDIuMDogb2JqZWN0X2luaXQgZmFpbGVkIGZvciAoNDAyNjU0MDAzMiwgMHgwMDAw MDAwMSkKPiAga2VybmVsOiBbZHJtOnF4bF9hbGxvY19ib19yZXNlcnZlZCBbcXhsXV0gKkVSUk9S KiBmYWlsZWQgdG8gYWxsb2NhdGUgVlJBTSBCTwo+IAo+IG9uIFFYTCB3aGVuIHN3aXRjaGluZyBh bmQgYWNjZXNzaW5nIG9uIFZULiAgVGhlIGN1bHByaXQgd2FzIHRoZSBnZW5lcmljCj4gZGVmZXJy ZWRfaW8gY29kZSAocXhsIGRyaXZlciBzd2l0Y2hlZCB0byBpdCBzaW5jZSA0LjcpLiAgVGhlcmUg aXMgYQo+IHJhY2UgYmV0d2VlbiB0aGUgZGlydHkgY2xpcCB1cGRhdGUgYW5kIHRoZSBjYWxsIG9m IGNhbGxiYWNrLgo+IAo+IEluIGRybV9mYl9oZWxwZXJfZGlydHkoKSwgdGhlIGRpcnR5IGNsaXAg aXMgdXBkYXRlZCBpbiB0aGUgc3BpbmxvY2ssCj4gd2hpbGUgaXQga2lja3Mgb2ZmIHRoZSB1cGRh dGUgd29ya2VyIG91dHNpZGUgdGhlIHNwaW5sb2NrLiAgTWVhbndoaWxlCj4gdGhlIHVwZGF0ZSB3 b3JrZXIgY2xlYXJzIHRoZSBkaXJ0eSBjbGlwIGluIHRoZSBzcGlubG9jaywgdG9vLiAgVGh1cywK PiB3aGVuIGRybV9mYl9oZWxwZXJfZGlydHkoKSBpcyBjYWxsZWQgY29uY3VycmVudGx5LCBzY2hl ZHVsZV93b3JrKCkgaXMKPiBjYWxsZWQgYWZ0ZXIgdGhlIGNsaXAgaXMgY2xlYXJlZCBpbiB0aGUg Zmlyc3Qgd29ya2VyIGNhbGwuCj4gCj4gVGhlIGZpeCBpcyBzaW1wbHkgbW92aW5nIHNjaGVkdWxl X3dvcmsoKSBpbnNpZGUgdGhlIHNwaW5sb2NrLgo+IAo+IEJ1Z3ppbGxhOiBodHRwczovL2J1Z3Mu ZnJlZWRlc2t0b3Aub3JnL3Nob3dfYnVnLmNnaT9pZD05ODMyMgo+IEJ1Z3ppbGxhOiBodHRwczov L2J1Z3ppbGxhLnN1c2UuY29tL3Nob3dfYnVnLmNnaT9pZD0xMDAzMjk4Cj4gRml4ZXM6IGVhYTQz NGRlZmFjYSAoJ2RybS9mYi1oZWxwZXI6IEFkZCBmYl9kZWZlcnJlZF9pbyBzdXBwb3J0JykKPiBT aWduZWQtb2ZmLWJ5OiBUYWthc2hpIEl3YWkgPHRpd2FpQHN1c2UuZGU+CgpJIGZvcmdvdCB0byBw dXQgQ2MgdG8gc3RhYmxlLiAgRmVlbCBmcmVlIHRvIGFkZCBpdCBvbmNlIGlmIGl0J3MKYWNjZXB0 ZWQuCgoKdGhhbmtzLAoKVGFrYXNoaQoKPiAtLS0KPiAgZHJpdmVycy9ncHUvZHJtL2RybV9mYl9o ZWxwZXIuYyB8IDMgKy0tCj4gIDEgZmlsZSBjaGFuZ2VkLCAxIGluc2VydGlvbigrKSwgMiBkZWxl dGlvbnMoLSkKPiAKPiBkaWZmIC0tZ2l0IGEvZHJpdmVycy9ncHUvZHJtL2RybV9mYl9oZWxwZXIu YyBiL2RyaXZlcnMvZ3B1L2RybS9kcm1fZmJfaGVscGVyLmMKPiBpbmRleCAwMzQxNGJkZTFmMTUu LmJhZTM5MmRlYTJjYyAxMDA2NDQKPiAtLS0gYS9kcml2ZXJzL2dwdS9kcm0vZHJtX2ZiX2hlbHBl ci5jCj4gKysrIGIvZHJpdmVycy9ncHUvZHJtL2RybV9mYl9oZWxwZXIuYwo+IEBAIC04NjEsOSAr ODYxLDggQEAgc3RhdGljIHZvaWQgZHJtX2ZiX2hlbHBlcl9kaXJ0eShzdHJ1Y3QgZmJfaW5mbyAq aW5mbywgdTMyIHgsIHUzMiB5LAo+ICAJY2xpcC0+eTEgPSBtaW5fdCh1MzIsIGNsaXAtPnkxLCB5 KTsKPiAgCWNsaXAtPngyID0gbWF4X3QodTMyLCBjbGlwLT54MiwgeCArIHdpZHRoKTsKPiAgCWNs aXAtPnkyID0gbWF4X3QodTMyLCBjbGlwLT55MiwgeSArIGhlaWdodCk7Cj4gLQlzcGluX3VubG9j a19pcnFyZXN0b3JlKCZoZWxwZXItPmRpcnR5X2xvY2ssIGZsYWdzKTsKPiAtCj4gIAlzY2hlZHVs ZV93b3JrKCZoZWxwZXItPmRpcnR5X3dvcmspOwo+ICsJc3Bpbl91bmxvY2tfaXJxcmVzdG9yZSgm aGVscGVyLT5kaXJ0eV9sb2NrLCBmbGFncyk7Cj4gIH0KPiAgCj4gIC8qKgo+IC0tIAo+IDIuMTAu MQo+IApfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpkcmkt ZGV2ZWwgbWFpbGluZyBsaXN0CmRyaS1kZXZlbEBsaXN0cy5mcmVlZGVza3RvcC5vcmcKaHR0cHM6 Ly9saXN0cy5mcmVlZGVza3RvcC5vcmcvbWFpbG1hbi9saXN0aW5mby9kcmktZGV2ZWwK