From mboxrd@z Thu Jan 1 00:00:00 1970 From: Hannes Reinecke Subject: Re: [PATCH 1/2] dm-multipath: push back requests instead of queueing Date: Mon, 20 Jan 2014 16:49:39 +0100 Message-ID: <52DD4593.7090106@suse.de> References: <1389955328-107148-1-git-send-email-hare@suse.de> <1389955328-107148-2-git-send-email-hare@suse.de> <11AF7C027C4C02408624617A4986078401024EB7@BPXM12GP.gisp.nec.co.jp> Reply-To: device-mapper development Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <11AF7C027C4C02408624617A4986078401024EB7@BPXM12GP.gisp.nec.co.jp> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: dm-devel-bounces@redhat.com Errors-To: dm-devel-bounces@redhat.com To: Junichi Nomura , device-mapper development Cc: Mike Snitzer , Alasdair Kergon List-Id: dm-devel.ids T24gMDEvMjAvMjAxNCAxMjo1NyBQTSwgSnVuaWNoaSBOb211cmEgd3JvdGU6Cj4gT24gMDEvMTcv MTQgMTk6NDIsIEhhbm5lcyBSZWluZWNrZSB3cm90ZToKPj4gQEAgLTEyNTYsNyArMTE4OCw4IEBA IHN0YXRpYyB2b2lkIHBnX2luaXRfZG9uZSh2b2lkICpkYXRhLCBpbnQgZXJyb3JzKQo+PiAgCQlt LT5xdWV1ZV9pbyA9IDA7Cj4+ICAKPj4gIAltLT5wZ19pbml0X2RlbGF5X3JldHJ5ID0gZGVsYXlf cmV0cnk7Cj4+IC0JcXVldWVfd29yayhrbXVsdGlwYXRoZCwgJm0tPnByb2Nlc3NfcXVldWVkX2lv cyk7Cj4+ICsJaWYgKCFtLT5xdWV1ZV9pbykKPj4gKwkJZG1fdGFibGVfcnVuX3F1ZXVlKG0tPnRp LT50YWJsZSk7Cj4+ICAKPj4gIAkvKgo+PiAgCSAqIFdha2UgdXAgYW55IHRocmVhZCB3YWl0aW5n IHRvIHN1c3BlbmQuCj4gCj4gRG9lcyBwZ19pbml0IHJldHJ5IHN0aWxsIHdvcmsgd2l0aCB0aGlz IGNoYW5nZT8KPiAKPiBJIHN1c3BlY3QgaXQgZG9lc24ndC4gV2hlbiBhIHJldHJ5IGlzIHJlcXVl c3RlZCBpbiBwZ19pbml0X2RvbmUoKSwKPiBtLT5xdWV1ZV9pbyBpcyBzdGlsbCAwIGFuZCBzb21l Ym9keSBoYXMgdG8ga2ljayBwZ19pbml0Lgo+IAo+IEluc3RlYWQgb2YgcmVwbGFjaW5nICJwcm9j ZXNzX3F1ZXVlZF9pb3MiIHdvcmsgY29tcGxldGVseSwKPiBob3cgYWJvdXQga2VlcGluZyBpdCBh cm91bmQgYW5kIGp1c3QgcmVwbGFjaW5nIGRpc3BhdGNoX3F1ZXVlZF9pb3MoKSBieQo+IGRtX3Rh YmxlX3J1bl9xdWV1ZSgpPwo+IApJJ2QgcmF0aGVyIHByZWZlciB0byBzY2hlZHVsZSB0aGUgYWN0 aXZhdGVfcGF0aCgpIHdvcmtxdWV1ZSBpdGVtCmRpcmVjdGx5OyBubyBuZWVkIHRvIGludm9sdmUg eWV0IGFub3RoZXIgd29ya3F1ZXVlIGhlcmUuCkFuZCB3ZSBhbHJlYWR5IGtub3cgd2hpY2ggcGF0 aCB0byBhY3RpdmF0ZS4KCkJ1dCB5ZWFoLCBpdCBsb29rcyBhcyBpZiB3ZSBuZWVkIHRvIHJlc2No ZWR1bGUgYWN0aXZhdGVfcGF0aCgpIGhlcmUuCgo+PiBAQCAtMTYwNiw3ICsxNTQwLDcgQEAgc3Rh dGljIGludCBtdWx0aXBhdGhfaW9jdGwoc3RydWN0IGRtX3RhcmdldCAqdGksIHVuc2lnbmVkIGlu dCBjbWQsCj4+ICAKPj4gIAlzcGluX2xvY2tfaXJxc2F2ZSgmbS0+bG9jaywgZmxhZ3MpOwo+PiAg Cj4+IC0JaWYgKCFtLT5jdXJyZW50X3BncGF0aCkKPj4gKwlpZiAoIW0tPmN1cnJlbnRfcGdwYXRo IHx8ICFtLT5xdWV1ZV9pbykKPj4gIAkJX19jaG9vc2VfcGdwYXRoKG0sIDApOwo+PiAgCj4+ICAJ cGdwYXRoID0gbS0+Y3VycmVudF9wZ3BhdGg7Cj4gCj4gV2h5IGlzICFtLT5xdWV1ZV9pbyBjaGVj ayBhZGRlZCBoZXJlPwo+IApZb3UgYXJlIHJpZ2h0LCB0aGlzIGlzIGEgZGlmZmVyZW50IHBhdGNo LgpJJ2xsIGJlIHNwbGl0dGluZyBpdCB1cC4KCj4+IGRpZmYgLS1naXQgYS9kcml2ZXJzL21kL2Rt LmMgYi9kcml2ZXJzL21kL2RtLmMKPj4gaW5kZXggMDcwNGM1Mi4uMjkxNDkxYiAxMDA2NDQKPj4g LS0tIGEvZHJpdmVycy9tZC9kbS5jCj4+ICsrKyBiL2RyaXZlcnMvbWQvZG0uYwo+PiBAQCAtMTkx Miw2ICsxOTEyLDE5IEBAIHN0YXRpYyBpbnQgZG1fYW55X2Nvbmdlc3RlZCh2b2lkICpjb25nZXN0 ZWRfZGF0YSwgaW50IGJkaV9iaXRzKQo+PiAgCXJldHVybiByOwo+PiAgfQo+PiAgCj4+ICt2b2lk IGRtX3RhYmxlX3J1bl9xdWV1ZShzdHJ1Y3QgZG1fdGFibGUgKnQpCj4+ICt7Cj4+ICsJc3RydWN0 IG1hcHBlZF9kZXZpY2UgKm1kID0gZG1fdGFibGVfZ2V0X21kKHQpOwo+PiArCXVuc2lnbmVkIGxv bmcgZmxhZ3M7Cj4+ICsKPj4gKwlpZiAobWQtPnF1ZXVlKSB7Cj4+ICsJCXNwaW5fbG9ja19pcnFz YXZlKG1kLT5xdWV1ZS0+cXVldWVfbG9jaywgZmxhZ3MpOwo+PiArCQlibGtfcnVuX3F1ZXVlX2Fz eW5jKG1kLT5xdWV1ZSk7Cj4+ICsJCXNwaW5fdW5sb2NrX2lycXJlc3RvcmUobWQtPnF1ZXVlLT5x dWV1ZV9sb2NrLCBmbGFncyk7Cj4+ICsJfQo+PiArfQo+PiArRVhQT1JUX1NZTUJPTF9HUEwoZG1f dGFibGVfcnVuX3F1ZXVlKTsKPj4gKwo+IAo+IEkgdGhpbmsgdGhpcyBmdW5jaW9uIGZpdHMgYmV0 dGVyIGluIGRtLXRhYmxlLmMuCj4gClNvIEkndmUgdGhvdWdodCwgYnV0IHN0cnVjdCBtYXBwZWRf ZGV2aWNlIGlzIGludGVybmFsIHRvIGRtLmMKQW5kIGhhdmluZyB5ZXQgYW5vdGhlciB3cmFwcGVy IGp1c3QgdG8gY2lyY3VtdmVudCB0aGUgbGF5ZXJpbmcKc2VlbWVkIGEgYml0IGV4Y2Vzc2l2ZS4K CkJ1dCBJIGRvIHdoYXRldmVyIGRlZW1lZCBuZWNlc3NhcnkgYnkgdGhlIHBvd2VycyB0aGF0IGJl IC4uCgpDaGVlcnMsCgpIYW5uZXMKLS0gCkRyLiBIYW5uZXMgUmVpbmVja2UJCSAgICAgIHpTZXJp ZXMgJiBTdG9yYWdlCmhhcmVAc3VzZS5kZQkJCSAgICAgICs0OSA5MTEgNzQwNTMgNjg4ClNVU0Ug TElOVVggUHJvZHVjdHMgR21iSCwgTWF4ZmVsZHN0ci4gNSwgOTA0MDkgTsO8cm5iZXJnCkdGOiBK LiBIYXduLCBKLiBHdWlsZCwgRi4gSW1lbmTDtnJmZmVyLCBIUkIgMTY3NDYgKEFHIE7DvHJuYmVy ZykKCi0tCmRtLWRldmVsIG1haWxpbmcgbGlzdApkbS1kZXZlbEByZWRoYXQuY29tCmh0dHBzOi8v d3d3LnJlZGhhdC5jb20vbWFpbG1hbi9saXN0aW5mby9kbS1kZXZlbA==