From mboxrd@z Thu Jan 1 00:00:00 1970 From: majianpeng Subject: Re: Re: question about striped_read Date: Wed, 31 Jul 2013 15:32:08 +0800 Message-ID: <201307311532055128853@gmail.com> References: <201307250852310158703@gmail.com> <201307260848241340451@gmail.com> <201307260922285205344@gmail.com> <201307260938095935695@gmail.com> <201307261007003577701@gmail.com> <201307291100080913443@gmail.com> <201307301707312612641@gmail.com> <201307301941552785741@gmail.com> <201307310827296030660@gmail.com> <201307310844488455702@gmail.com> <201307310933358798964@gmail.com> <2013073113222469570311@gmail.com>, Reply-To: majianpeng Mime-Version: 1.0 Content-Type: text/plain; charset="gb2312" Content-Transfer-Encoding: base64 Return-path: Received: from mail-pd0-f174.google.com ([209.85.192.174]:59394 "EHLO mail-pd0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754795Ab3GaHcN (ORCPT ); Wed, 31 Jul 2013 03:32:13 -0400 Received: by mail-pd0-f174.google.com with SMTP id 10so432610pdc.33 for ; Wed, 31 Jul 2013 00:32:12 -0700 (PDT) Sender: ceph-devel-owner@vger.kernel.org List-ID: To: =?gb2312?B?WWFuLCBaaGVuZw==?= Cc: sage , ceph-devel IFtzbmlwXQ0KVGVzdCBjYXNlDQpBOiB0b3VjaCBmaWxlDQogICAgZGQgaWY9ZmlsZSBvZj0vZGV2 L251bGwgYnM9NU0gY291bnQ9MSBpZmxhZz1kaXJlY3QNCkI6IFtkYXRhKDJNKXxob2xlKDJtKV1b ZGF0YSgyTSldDQogICBkZCBpZj1maWxlIG9mPS9kZXYvbnVsbCBicz04TSBjb3VudD0xIGlmbGFn PWRpcmVjdA0KQzogW2RhdGEoNE0pW2hvbGUoNE0pXVtob2xlKDRNKV1bZGF0YSgyTSldDQogIGRk IGlmPWZpbGUgb2Y9L2Rldi9udWxsIGJzPTE2TSBjb3VudD0xIGlmbGFnPWRpcmVjdA0KRDogdG91 Y2ggZmlsZTt0cnVuY2F0ZSAtcyA1TSBmaWxlDQogIGRkIGlmPWZpbGUgb2Y9L2Rldi9udWxsIGJz PThNIGNvdW50PTEgaWZsYWc9ZGlyZWN0DQoNClRob3NlIGNhc2VzIGNhbiB3b3JrLg0KTm93IGkg bWFrZSBkaWZmZXJlbnQgcHJvY2Vzc2luZyAgZm9yIHNob3J0LXJlYWQgYmV0d2VlbiAncmV0ID4g MCcgYW5kICJyZXQgPTAiLg0KRm9yIHRoZSBzaG9ydC1yZWFkIHdoaWNoIHJldCA+IDAsIGl0IGRv bid0IGRvIHJlYWQtcGFnZSByYXRoZXIgdGhhbiB6ZXJvIHRoZSBsZWZ0IGFyZWEuDQpUaGlzIG1l YW5zIHJlZHVjZSBvbmUgbWVhbmluZ2xlc3MgcmVhZCBvcGVyYXRpb24uDQoNCmRpZmYgLS1naXQg YS9mcy9jZXBoL2ZpbGUuYyBiL2ZzL2NlcGgvZmlsZS5jDQppbmRleCAyZGRmMDYxLi5mNjQzZWM4 IDEwMDY0NA0KLS0tIGEvZnMvY2VwaC9maWxlLmMNCisrKyBiL2ZzL2NlcGgvZmlsZS5jDQpAQCAt MzUwLDEzICszNTAsMTcgQEAgbW9yZToNCiAgICAgICAgICAgICByZXQsIGhpdF9zdHJpcGUgPyAi IEhJVFNUUklQRSIgOiAiIiwgd2FzX3Nob3J0ID8gIiBTSE9SVCIgOiAiIik7DQogDQogICAgICAg IGlmIChyZXQgPiAwKSB7DQotICAgICAgICAgICAgICAgaW50IGRpZHBhZ2VzID0gKHBhZ2VfYWxp Z24gKyByZXQpID4+IFBBR0VfQ0FDSEVfU0hJRlQ7DQotDQotICAgICAgICAgICAgICAgaWYgKHJl YWQgPCBwb3MgLSBvZmYpIHsNCmRpZmYgLS1naXQgYS9mcy9jZXBoL2ZpbGUuYyBiL2ZzL2NlcGgv ZmlsZS5jDQppbmRleCAyZGRmMDYxLi5mNjQzZWM4IDEwMDY0NA0KLS0tIGEvZnMvY2VwaC9maWxl LmMNCisrKyBiL2ZzL2NlcGgvZmlsZS5jDQpAQCAtMzUwLDEzICszNTAsMTcgQEAgbW9yZToNCiAg ICAgICAgICAgICByZXQsIGhpdF9zdHJpcGUgPyAiIEhJVFNUUklQRSIgOiAiIiwgd2FzX3Nob3J0 ID8gIiBTSE9SVCIgOiAiIik7DQogDQogICAgICAgIGlmIChyZXQgPiAwKSB7DQotICAgICAgICAg ICAgICAgaW50IGRpZHBhZ2VzID0gKHBhZ2VfYWxpZ24gKyByZXQpID4+IFBBR0VfQ0FDSEVfU0hJ RlQ7DQotDQotICAgICAgICAgICAgICAgaWYgKHJlYWQgPCBwb3MgLSBvZmYpIHsNCi0gICAgICAg ICAgICAgICAgICAgICAgIGRvdXQoIiB6ZXJvIGdhcCAlbGx1IHRvICVsbHVcbiIsIG9mZiArIHJl YWQsIHBvcyk7DQotICAgICAgICAgICAgICAgICAgICAgICBjZXBoX3plcm9fcGFnZV92ZWN0b3Jf cmFuZ2UocGFnZV9hbGlnbiArIHJlYWQsDQotICAgICAgICAgICAgICAgICAgICAgICAgICAgICAg ICAgICAgICAgICAgICAgICAgICAgcG9zIC0gb2ZmIC0gcmVhZCwgcGFnZXMpOw0KKyAgICAgICAg ICAgICAgIGludCAgZGlkcGFnZXM7DQorDQorICAgICAgICAgICAgICAgaWYgKHdhc19zaG9ydCAm JiBwb3MgKyByZXQgPCBpbm9kZS0+aV9zaXplKSB7DQorICAgICAgICAgICAgICAgICAgICAgICAg dTY0IHRtcCA9IG1pbih0aGlzX2xlbiAtIHJldCwgDQorICAgICAgICAgICAgICAgICAgICAgICAg ICAgICAgICAgICAgICAgIAlpbm9kZS0+aV9zaXplIC0gcG9zIC0gcmV0KTsNCisgICAgICAgICAg ICAgICAgICAgICAgICBkb3V0KCIgemVybyBnYXAgJWxsdSB0byAlbGx1XG4iLCBwb3MgKyByZXQs IHBvcyArIHJldCArIHRtcCk7DQorICAgICAgICAgICAgICAgICAgICAgICAgY2VwaF96ZXJvX3Bh Z2VfdmVjdG9yX3JhbmdlKHBhZ2VfYWxpZ24gKyByZWFkICsgcmV0LA0KKyAgICAgICAgICAgICAg ICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICB0bXAsIHBhZ2VzKTsNCisg ICAgICAgICAgICAgICAgICAgICAgICByZXQgKz0gdG1wOw0KICAgICAgICAgICAgICAgIH0NCisg ICAgICAgICAgICAgICBkaWRwYWdlcyA9IChwYWdlX2FsaWduICsgcmV0KSA+PiBQQUdFX0NBQ0hF X1NISUZUOw0KICAgICAgICAgICAgICAgIHBvcyArPSByZXQ7DQogICAgICAgICAgICAgICAgcmVh ZCA9IHBvcyAtIG9mZjsNCiAgICAgICAgICAgICAgICBsZWZ0IC09IHJldDsNCkBAIC0zNzUsMTMg KzM3OSwyNSBAQCBtb3JlOg0KIA0KICAgICAgICAgICAgICAgIC8qIHplcm8gdHJhaWxpbmcgYnl0 ZXMgKGluc2lkZSBpX3NpemUpICovDQogICAgICAgICAgICAgICAgaWYgKGxlZnQgPiAwICYmIHBv cyA8IGlub2RlLT5pX3NpemUpIHsNCisgICAgICAgICAgICAgICAgICAgICAgIGludCBkaWRwYWdl czsNCiAgICAgICAgICAgICAgICAgICAgICAgIGlmIChwb3MgKyBsZWZ0ID4gaW5vZGUtPmlfc2l6 ZSkNCiAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgbGVmdCA9IGlub2RlLT5pX3NpemUg LSBwb3M7DQogDQotICAgICAgICAgICAgICAgICAgICAgICBkb3V0KCJ6ZXJvIHRhaWwgJWRcbiIs IGxlZnQpOw0KLSAgICAgICAgICAgICAgICAgICAgICAgY2VwaF96ZXJvX3BhZ2VfdmVjdG9yX3Jh bmdlKHBhZ2VfYWxpZ24gKyByZWFkLCBsZWZ0LA0KKyAgICAgICAgICAgICAgICAgICAgICAgcmV0 ID0gbWluKGxlZnQsIHRoaXNfbGVuKTsNCisgICAgICAgICAgICAgICAgICAgICAgIGRvdXQoInpl cm8gdGFpbCAlZFxuIiwgcmV0KTsNCisgICAgICAgICAgICAgICAgICAgICAgIGNlcGhfemVyb19w YWdlX3ZlY3Rvcl9yYW5nZShwYWdlX2FsaWduICsgcmVhZCwgcmV0LA0KICAgICAgICAgICAgICAg ICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgIHBhZ2VzKTsNCi0gICAgICAgICAg ICAgICAgICAgICAgIHJlYWQgKz0gbGVmdDsNCisgICAgICAgICAgICAgICAgICAgICAgIGRpZHBh Z2VzID0gKHBhZ2VfYWxpZ24gKyByZXQpID4+IFBBR0VfQ0FDSEVfU0hJRlQ7DQorDQorICAgICAg ICAgICAgICAgICAgICAgICBwb3MgKz0gcmV0Ow0KKyAgICAgICAgICAgICAgICAgICAgICAgcmVh ZCA9IHBvcyAtIG9mZjsNCisgICAgICAgICAgICAgICAgICAgICAgIGxlZnQgLT0gcmV0Ow0KKyAg ICAgICAgICAgICAgICAgICAgICAgcGFnZV9wb3MgKz0gZGlkcGFnZXM7DQorICAgICAgICAgICAg ICAgICAgICAgICBwYWdlc19sZWZ0IC09IGRpZHBhZ2VzOw0KKw0KKyAgICAgICAgICAgICAgICAg ICAgICAgLyogaGl0IHN0cmlwZT8gKi8NCisgICAgICAgICAgICAgICAgICAgICAgIGlmIChsZWZ0 ICYmIGhpdF9zdHJpcGUpDQorICAgICAgICAgICAgICAgICAgICAgICAgICAgICAgIGdvdG8gbW9y ZTsNCiAgICAgICAgICAgICAgICB9DQogICAgICAgIH0NCiA=