From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Fri, 22 Sep 2000 07:27:30 -0300 (BRST) From: Rik van Riel Subject: Re: test9-pre5+t9p2-vmpatch VM deadlock during write-intensive workload In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: MULTIPART/Mixed; BOUNDARY="1443086817-781029003-969615251=:12532" Content-ID: Sender: owner-linux-mm@kvack.org Return-Path: To: Molnar Ingo Cc: "David S. Miller" , torvalds@transmeta.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org List-ID: --1443086817-781029003-969615251=:12532 Content-Type: TEXT/PLAIN; CHARSET=US-ASCII Content-ID: On Fri, 22 Sep 2000, Molnar Ingo wrote: > yep this has done the trick, the deadlock is gone. I've attached the full > VM-fixes patch (this fix included) against vanilla test9-pre5. Linus, could you please include this patch in the next pre patch? (in the mean time, I'll go back to looking at the balancing thing with shared memory ... which is unrelated to this deadlock problem) thanks, Rik -- "What you're running that piece of shit Gnome?!?!" -- Miguel de Icaza, UKUUG 2000 http://www.conectiva.com/ http://www.surriel.com/ --1443086817-781029003-969615251=:12532 Content-Type: TEXT/PLAIN; CHARSET=US-ASCII; NAME="vmfixes-2.4.0-test9-A1" Content-Transfer-Encoding: BASE64 Content-ID: Content-Description: Content-Disposition: ATTACHMENT; FILENAME="vmfixes-2.4.0-test9-A1" LS0tIGxpbnV4L2ZzL2J1ZmZlci5jLm9yaWcJRnJpIFNlcCAyMiAwMjozMTow NyAyMDAwDQorKysgbGludXgvZnMvYnVmZmVyLmMJRnJpIFNlcCAyMiAwMjoz MToxMyAyMDAwDQpAQCAtNzA2LDkgKzcwNiw3IEBADQogc3RhdGljIHZvaWQg cmVmaWxsX2ZyZWVsaXN0KGludCBzaXplKQ0KIHsNCiAJaWYgKCFncm93X2J1 ZmZlcnMoc2l6ZSkpIHsNCi0JCWJhbGFuY2VfZGlydHkoTk9ERVYpOw0KLQkJ d2FrZXVwX2tzd2FwZCgwKTsgLyogV2UgY2FuJ3Qgd2FpdCBiZWNhdXNlIG9m IF9fR0ZQX0lPICovDQotCQlzY2hlZHVsZSgpOw0KKwkJdHJ5X3RvX2ZyZWVf cGFnZXMoR0ZQX0JVRkZFUik7DQogCX0NCiB9DQogDQotLS0gbGludXgvbW0v ZmlsZW1hcC5jLm9yaWcJRnJpIFNlcCAyMiAwMjozMTowNyAyMDAwDQorKysg bGludXgvbW0vZmlsZW1hcC5jCUZyaSBTZXAgMjIgMDI6MzE6MTMgMjAwMA0K QEAgLTI1NSw3ICsyNTUsNyBAQA0KIAkgKiB1cCBrc3dhcGQuDQogCSAqLw0K IAlhZ2VfcGFnZV91cChwYWdlKTsNCi0JaWYgKGluYWN0aXZlX3Nob3J0YWdl KCkgPiAoaW5hY3RpdmVfdGFyZ2V0ICogMykgLyA0KQ0KKwlpZiAoaW5hY3Rp dmVfc2hvcnRhZ2UoKSA+IGluYWN0aXZlX3RhcmdldCAvIDIgJiYgZnJlZV9z aG9ydGFnZSgpKQ0KIAkJCXdha2V1cF9rc3dhcGQoMCk7DQogbm90X2ZvdW5k Og0KIAlyZXR1cm4gcGFnZTsNCi0tLSBsaW51eC9tbS9wYWdlX2FsbG9jLmMu b3JpZwlGcmkgU2VwIDIyIDAyOjMxOjA3IDIwMDANCisrKyBsaW51eC9tbS9w YWdlX2FsbG9jLmMJRnJpIFNlcCAyMiAwMjozMToxMyAyMDAwDQpAQCAtNDQ0 LDcgKzQ0NCw4IEBADQogCQkgKiBwcm9jZXNzZXMsIGV0YykuDQogCQkgKi8N CiAJCWlmIChnZnBfbWFzayAmIF9fR0ZQX1dBSVQpIHsNCi0JCQl3YWtldXBf a3N3YXBkKDEpOw0KKwkJCXRyeV90b19mcmVlX3BhZ2VzKGdmcF9tYXNrKTsN CisJCQltZW1vcnlfcHJlc3N1cmUrKzsNCiAJCQlnb3RvIHRyeV9hZ2FpbjsN CiAJCX0NCiAJfQ0KLS0tIGxpbnV4L21tL3N3YXAuYy5vcmlnCUZyaSBTZXAg MjIgMDI6MzE6MDcgMjAwMA0KKysrIGxpbnV4L21tL3N3YXAuYwlGcmkgU2Vw IDIyIDAyOjMxOjEzIDIwMDANCkBAIC0yMzMsMjcgKzIzMywxMSBAQA0KIAlz cGluX2xvY2soJnBhZ2VtYXBfbHJ1X2xvY2spOw0KIAlpZiAoIVBhZ2VMb2Nr ZWQocGFnZSkpDQogCQlCVUcoKTsNCi0JLyoNCi0JICogSGVpc2VuYnVnIENv bXBlbnNhdG9yKHRtKQ0KLQkgKiBUaGlzIGJ1ZyBzaG91bGRuJ3QgdHJpZ2dl ciwgYnV0IGZvciB1bmtub3duIHJlYXNvbnMgaXQNCi0JICogc29tZXRpbWVz IGRvZXMuIElmIHRoZXJlIGFyZSBubyBzaWducyBvZiBsaXN0IGNvcnJ1cHRp b24sDQotCSAqIHdlIGlnbm9yZSB0aGUgcHJvYmxlbS4gRWxzZSB3ZSBCVUco KS4uLg0KLQkgKi8NCi0JaWYgKFBhZ2VBY3RpdmUocGFnZSkgfHwgUGFnZUlu YWN0aXZlRGlydHkocGFnZSkgfHwNCi0JCQkJCVBhZ2VJbmFjdGl2ZUNsZWFu KHBhZ2UpKSB7DQotCQlzdHJ1Y3QgbGlzdF9oZWFkICogcGFnZV9scnUgPSAm cGFnZS0+bHJ1Ow0KLQkJaWYgKHBhZ2VfbHJ1LT5uZXh0LT5wcmV2ICE9IHBh Z2VfbHJ1KSB7DQotCQkJcHJpbnRrKCJWTTogbHJ1X2NhY2hlX2FkZCwgYml0 IG9yIGxpc3QgY29ycnVwdGlvbi4uXG4iKTsNCi0JCQlCVUcoKTsNCi0JCX0N Ci0JCXByaW50aygiVk06IGxydV9jYWNoZV9hZGQsIHBhZ2UgYWxyZWFkeSBp biBsaXN0IVxuIik7DQotCQlnb3RvIHBhZ2VfYWxyZWFkeV9vbl9saXN0Ow0K LQl9DQorCURFQlVHX0FERF9QQUdFDQogCWFkZF9wYWdlX3RvX2FjdGl2ZV9s aXN0KHBhZ2UpOw0KIAkvKiBUaGlzIHNob3VsZCBiZSByZWxhdGl2ZWx5IHJh cmUgKi8NCiAJaWYgKCFwYWdlLT5hZ2UpDQogCQlkZWFjdGl2YXRlX3BhZ2Vf bm9sb2NrKHBhZ2UpOw0KLXBhZ2VfYWxyZWFkeV9vbl9saXN0Og0KIAlzcGlu X3VubG9jaygmcGFnZW1hcF9scnVfbG9jayk7DQogfQ0KIA0KLS0tIGxpbnV4 L21tL3Ztc2Nhbi5jLm9yaWcJRnJpIFNlcCAyMiAwMjozMTowNyAyMDAwDQor KysgbGludXgvbW0vdm1zY2FuLmMJRnJpIFNlcCAyMiAwMjozMToyNyAyMDAw DQpAQCAtMzc3LDcgKzM3Nyw3IEBADQogI2RlZmluZSBTV0FQX1NISUZUIDUN CiAjZGVmaW5lIFNXQVBfTUlOIDgNCiANCi1zdGF0aWMgaW50IHN3YXBfb3V0 KHVuc2lnbmVkIGludCBwcmlvcml0eSwgaW50IGdmcF9tYXNrKQ0KK3N0YXRp YyBpbnQgc3dhcF9vdXQodW5zaWduZWQgaW50IHByaW9yaXR5LCBpbnQgZ2Zw X21hc2ssIHVuc2lnbmVkIGxvbmcgaWRsZV90aW1lKQ0KIHsNCiAJc3RydWN0 IHRhc2tfc3RydWN0ICogcDsNCiAJaW50IGNvdW50ZXI7DQpAQCAtNDA3LDYg KzQwNyw3IEBADQogCQlzdHJ1Y3QgbW1fc3RydWN0ICpiZXN0ID0gTlVMTDsN CiAJCWludCBwaWQgPSAwOw0KIAkJaW50IGFzc2lnbiA9IDA7DQorCQlpbnQg Zm91bmRfdGFzayA9IDA7DQogCXNlbGVjdDoNCiAJCXJlYWRfbG9jaygmdGFz a2xpc3RfbG9jayk7DQogCQlwID0gaW5pdF90YXNrLm5leHRfdGFzazsNCkBA IC00MTYsNiArNDE3LDExIEBADQogCQkJCWNvbnRpbnVlOw0KIAkgCQlpZiAo bW0tPnJzcyA8PSAwKQ0KIAkJCQljb250aW51ZTsNCisJCQkvKiBTa2lwIHRh c2tzIHdoaWNoIGhhdmVuJ3Qgc2xlcHQgbG9uZyBlbm91Z2ggeWV0IHdoZW4g aWRsZS1zd2FwcGluZy4gKi8NCisJCQlpZiAoaWRsZV90aW1lICYmICFhc3Np Z24gJiYgKCEocC0+c3RhdGUgJiBUQVNLX0lOVEVSUlVQVElCTEUpIHx8DQor CQkJCQl0aW1lX2JlZm9yZShwLT5zbGVlcF90aW1lICsgaWRsZV90aW1lICog SFosIGppZmZpZXMpKSkNCisJCQkJY29udGludWU7DQorCQkJZm91bmRfdGFz aysrOw0KIAkJCS8qIFJlZnJlc2ggc3dhcF9jbnQ/ICovDQogCQkJaWYgKGFz c2lnbiA9PSAxKSB7DQogCQkJCW1tLT5zd2FwX2NudCA9IChtbS0+cnNzID4+ IFNXQVBfU0hJRlQpOw0KQEAgLTQzMCw3ICs0MzYsNyBAQA0KIAkJfQ0KIAkJ cmVhZF91bmxvY2soJnRhc2tsaXN0X2xvY2spOw0KIAkJaWYgKCFiZXN0KSB7 DQotCQkJaWYgKCFhc3NpZ24pIHsNCisJCQlpZiAoIWFzc2lnbiAmJiBmb3Vu ZF90YXNrID4gMCkgew0KIAkJCQlhc3NpZ24gPSAxOw0KIAkJCQlnb3RvIHNl bGVjdDsNCiAJCQl9DQpAQCAtNjkxLDkgKzY5Nyw5IEBADQogCQkJICogTm93 IHRoZSBwYWdlIGlzIHJlYWxseSBmcmVlYWJsZSwgc28gd2UNCiAJCQkgKiBt b3ZlIGl0IHRvIHRoZSBpbmFjdGl2ZV9jbGVhbiBsaXN0Lg0KIAkJCSAqLw0K LQkJCVVubG9ja1BhZ2UocGFnZSk7DQogCQkJZGVsX3BhZ2VfZnJvbV9pbmFj dGl2ZV9kaXJ0eV9saXN0KHBhZ2UpOw0KIAkJCWFkZF9wYWdlX3RvX2luYWN0 aXZlX2NsZWFuX2xpc3QocGFnZSk7DQorCQkJVW5sb2NrUGFnZShwYWdlKTsN CiAJCQljbGVhbmVkX3BhZ2VzKys7DQogCQl9IGVsc2Ugew0KIAkJCS8qDQpA QCAtNzAxLDkgKzcwNyw5IEBADQogCQkJICogSXQncyBubyB1c2Uga2VlcGlu ZyBpdCBoZXJlLCBzbyB3ZSBtb3ZlIGl0IHRvDQogCQkJICogdGhlIGFjdGl2 ZSBsaXN0Lg0KIAkJCSAqLw0KLQkJCVVubG9ja1BhZ2UocGFnZSk7DQogCQkJ ZGVsX3BhZ2VfZnJvbV9pbmFjdGl2ZV9kaXJ0eV9saXN0KHBhZ2UpOw0KIAkJ CWFkZF9wYWdlX3RvX2FjdGl2ZV9saXN0KHBhZ2UpOw0KKwkJCVVubG9ja1Bh Z2UocGFnZSk7DQogCQl9DQogCX0NCiAJc3Bpbl91bmxvY2soJnBhZ2VtYXBf bHJ1X2xvY2spOw0KQEAgLTg2MCw2ICs4NjYsNyBAQA0KIHN0YXRpYyBpbnQg cmVmaWxsX2luYWN0aXZlKHVuc2lnbmVkIGludCBnZnBfbWFzaywgaW50IHVz ZXIpDQogew0KIAlpbnQgcHJpb3JpdHksIGNvdW50LCBzdGFydF9jb3VudCwg bWFkZV9wcm9ncmVzczsNCisJdW5zaWduZWQgbG9uZyBpZGxlX3RpbWU7DQog DQogCWNvdW50ID0gaW5hY3RpdmVfc2hvcnRhZ2UoKSArIGZyZWVfc2hvcnRh Z2UoKTsNCiAJaWYgKHVzZXIpDQpAQCAtODY5LDE2ICs4NzYsMjggQEANCiAJ LyogQWx3YXlzIHRyaW0gU0xBQiBjYWNoZXMgd2hlbiBtZW1vcnkgZ2V0cyBs b3cuICovDQogCWttZW1fY2FjaGVfcmVhcChnZnBfbWFzayk7DQogDQorCS8q DQorCSAqIENhbGN1bGF0ZSB0aGUgbWluaW11bSB0aW1lIChpbiBzZWNvbmRz KSBhIHByb2Nlc3MgbXVzdA0KKwkgKiBoYXZlIHNsZXB0IGJlZm9yZSB3ZSBj b25zaWRlciBpdCBmb3IgaWRsZSBzd2FwcGluZy4NCisJICogVGhpcyBtdXN0 IGJlIHRoZSBudW1iZXIgb2Ygc2Vjb25kcyBpdCB0YWtlcyB0byBnbyB0aHJv dWdoDQorCSAqIGFsbCBvZiB0aGUgY2FjaGUuIERvaW5nIHRoaXMgaWRsZSBz d2FwcGluZyBtYWtlcyB0aGUgVk0NCisJICogc21vb3RoZXIgb25jZSB3ZSBz dGFydCBoaXR0aW5nIHN3YXAuDQorCSAqLw0KKwlpZGxlX3RpbWUgPSBhdG9t aWNfcmVhZCgmcGFnZV9jYWNoZV9zaXplKTsNCisJaWRsZV90aW1lICs9IGF0 b21pY19yZWFkKCZidWZmZXJtZW1fcGFnZXMpOw0KKwlpZGxlX3RpbWUgLz0g KGluYWN0aXZlX3RhcmdldCArIDEpOw0KKw0KIAlwcmlvcml0eSA9IDY7DQog CWRvIHsNCiAJCW1hZGVfcHJvZ3Jlc3MgPSAwOw0KIA0KLQkJaWYgKGN1cnJl bnQtPm5lZWRfcmVzY2hlZCkgew0KKwkJaWYgKGN1cnJlbnQtPm5lZWRfcmVz Y2hlZCAmJiAoZ2ZwX21hc2sgJiBfX0dGUF9JTykpIHsNCiAJCQlfX3NldF9j dXJyZW50X3N0YXRlKFRBU0tfUlVOTklORyk7DQogCQkJc2NoZWR1bGUoKTsN CiAJCX0NCiANCi0JCXdoaWxlIChyZWZpbGxfaW5hY3RpdmVfc2Nhbihwcmlv cml0eSwgMSkpIHsNCisJCXdoaWxlIChyZWZpbGxfaW5hY3RpdmVfc2Nhbihw cmlvcml0eSwgMSkgfHwNCisJCQkJc3dhcF9vdXQocHJpb3JpdHksIGdmcF9t YXNrLCBpZGxlX3RpbWUpKSB7DQogCQkJbWFkZV9wcm9ncmVzcyA9IDE7DQog CQkJaWYgKCEtLWNvdW50KQ0KIAkJCQlnb3RvIGRvbmU7DQpAQCAtOTEzLDcg KzkzMiw3IEBADQogCQkvKg0KIAkJICogVGhlbiwgdHJ5IHRvIHBhZ2Ugc3R1 ZmYgb3V0Li4NCiAJCSAqLw0KLQkJd2hpbGUgKHN3YXBfb3V0KHByaW9yaXR5 LCBnZnBfbWFzaykpIHsNCisJCXdoaWxlIChzd2FwX291dChwcmlvcml0eSwg Z2ZwX21hc2ssIDApKSB7DQogCQkJbWFkZV9wcm9ncmVzcyA9IDE7DQogCQkJ aWYgKCEtLWNvdW50KQ0KIAkJCQlnb3RvIGRvbmU7DQpAQCAtOTYzLDcgKzk4 Miw4IEBADQogCSAqIGJlZm9yZSB3ZSBnZXQgYXJvdW5kIHRvIG1vdmluZyB0 aGVtIHRvIHRoZSBvdGhlcg0KIAkgKiBsaXN0LCBzbyB0aGlzIGlzIGEgcmVs YXRpdmVseSBjaGVhcCBvcGVyYXRpb24uDQogCSAqLw0KLQlpZiAoZnJlZV9z aG9ydGFnZSgpKQ0KKwlpZiAoZnJlZV9zaG9ydGFnZSgpIHx8IG5yX2luYWN0 aXZlX2RpcnR5X3BhZ2VzID4gbnJfZnJlZV9wYWdlcygpICsNCisJCQlucl9p bmFjdGl2ZV9jbGVhbl9wYWdlcygpKQ0KIAkJcmV0ICs9IHBhZ2VfbGF1bmRl cihnZnBfbWFzaywgdXNlcik7DQogDQogCS8qDQpAQCAtMTA3MCw5ICsxMDkw LDEyIEBADQogCQlydW5fdGFza19xdWV1ZSgmdHFfZGlzayk7DQogDQogCQkv KiANCi0JCSAqIElmIHdlJ3ZlIGVpdGhlciBjb21wbGV0ZWx5IGdvdHRlbiBy aWQgb2YgdGhlDQotCQkgKiBmcmVlIHBhZ2Ugc2hvcnRhZ2Ugb3IgdGhlIGlu YWN0aXZlIHBhZ2Ugc2hvcnRhZ2UNCi0JCSAqIGlzIGdldHRpbmcgbG93LCB0 aGVuIHN0b3AgZWF0aW5nIENQVSB0aW1lLg0KKwkJICogV2UgZ28gdG8gc2xl ZXAgaWYgZWl0aGVyIHRoZSBmcmVlIHBhZ2Ugc2hvcnRhZ2UNCisJCSAqIG9y IHRoZSBpbmFjdGl2ZSBwYWdlIHNob3J0YWdlIGlzIGdvbmUuIFdlIGRvIHRo aXMNCisJCSAqIGJlY2F1c2U6DQorCQkgKiAxKSB3ZSBuZWVkIG5vIG1vcmUg ZnJlZSBwYWdlcyAgIG9yDQorCQkgKiAyKSB0aGUgaW5hY3RpdmUgcGFnZXMg bmVlZCB0byBiZSBmbHVzaGVkIHRvIGRpc2ssDQorCQkgKiAgICBpdCB3b3Vs ZG4ndCBoZWxwIHRvIGVhdCBDUFUgdGltZSBub3cgLi4uDQogCQkgKg0KIAkJ ICogV2UgZ28gdG8gc2xlZXAgZm9yIG9uZSBzZWNvbmQsIGJ1dCBpZiBpdCdz IG5lZWRlZA0KIAkJICogd2UnbGwgYmUgd29rZW4gdXAgZWFybGllci4uLg0K LS0tIGxpbnV4L2luY2x1ZGUvbGludXgvc2NoZWQuaC5vcmlnCUZyaSBTZXAg MjIgMDI6MzE6MDQgMjAwMA0KKysrIGxpbnV4L2luY2x1ZGUvbGludXgvc2No ZWQuaAlGcmkgU2VwIDIyIDAyOjMxOjEzIDIwMDANCkBAIC0yOTgsNiArMjk4 LDcgQEANCiAJICogdGhhdCdzIGp1c3QgZmluZS4pDQogCSAqLw0KIAlzdHJ1 Y3QgbGlzdF9oZWFkIHJ1bl9saXN0Ow0KKwl1bnNpZ25lZCBsb25nIHNsZWVw X3RpbWU7DQogDQogCXN0cnVjdCB0YXNrX3N0cnVjdCAqbmV4dF90YXNrLCAq cHJldl90YXNrOw0KIAlzdHJ1Y3QgbW1fc3RydWN0ICphY3RpdmVfbW07DQpA QCAtODE4LDYgKzgxOSw3IEBADQogc3RhdGljIGlubGluZSB2b2lkIGRlbF9m cm9tX3J1bnF1ZXVlKHN0cnVjdCB0YXNrX3N0cnVjdCAqIHApDQogew0KIAlu cl9ydW5uaW5nLS07DQorCXAtPnNsZWVwX3RpbWUgPSBqaWZmaWVzOw0KIAls aXN0X2RlbCgmcC0+cnVuX2xpc3QpOw0KIAlwLT5ydW5fbGlzdC5uZXh0ID0g TlVMTDsNCiB9DQo= --1443086817-781029003-969615251=:12532-- -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux.eu.org/Linux-MM/