From: Daeho Jeong Subject: Question about ext4_free_blocks() Behavior for Per-File Data Journaling Mode Date: Wed, 14 Oct 2015 04:39:06 +0000 (GMT) Message-ID: <260827543.974111444797545780.JavaMail.weblogic@epmlwas03a> Reply-To: daeho.jeong@samsung.com Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: base64 Cc: "linux-ext4@vger.kernel.org" To: "tytso@mit.edu" Return-path: Received: from mailout4.samsung.com ([203.254.224.34]:56122 "EHLO mailout4.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750724AbbJNEko (ORCPT ); Wed, 14 Oct 2015 00:40:44 -0400 Received: from epcpsbgr2.samsung.com (u142.gpu120.samsung.co.kr [203.254.230.142]) by mailout4.samsung.com (Oracle Communications Messaging Server 7.0.5.31.0 64bit (built May 5 2014)) with ESMTP id <0NW702Q3G0ZHGU00@mailout4.samsung.com> for linux-ext4@vger.kernel.org; Wed, 14 Oct 2015 13:40:29 +0900 (KST) MIME-version: 1.0 Sender: linux-ext4-owner@vger.kernel.org List-ID: SGkuIEkgaGF2ZSBhIHF1ZXN0aW9uIGFib3V0IGV4dDRfZnJlZV9ibG9ja3MoKSBiZWhhdmlvciBm b3IgcGVyLWZpbGUgZGF0YSBqb3VybmFsaW5nDQptb2RlLiBBRkFJVUksIGluIGV4dDRfZnJlZV9i bG9ja3MoKSwgaXQgZG9lc24ndCBpbnZva2UgZXh0NF9mb3JnZXQoKSBmdW5jdGlvbiBmb3INCmRh dGEgYmxvY2tzIG9mIGEgcGVyLWZpbGUgZGF0YSBqb3VybmFsaW5nIGVuYWJsZWQgZmlsZSwgYmVj YXVzZSBhbGwgdGhlIGRhdGEgYmxvY2tzDQpvZiB0aGUgZmlsZSBhcmUgbm90IGxpbmtlZCB0byB0 aGUgYmxvY2sgZGV2aWNlJ3MgYWRkcmVzcyBzcGFjZSBvZiB0aGUgZmlsZSwgYnV0IHRoZQ0KYWRk cmVzcyBzcGFjZSBvZiB0aGUgaW5vZGUgb2YgdGhlIGZpbGUsIHNvIGFueSBkYXRhIGJsb2NrcyBv ZiB0aGUgZmlsZSBjYW5ub3QgYmUNCmZvdW5kIGJ5IHNiX2ZpbmRfZ2V0X2Jsb2NrKCkgZnVuY3Rp b24uIEl0IHNlZW1zIGEgYnVnLCBidXQgSSBhbSBub3Qgc3VyZS4NCklzIHRoaXMgYSBwcm9ibGVt Pw0KDQpJIHRoaW5rIHRoYXQsIGluIGV4dDRfZnJlZV9ibG9ja3MoKSwgd2UgaGF2ZSB0byBmaW5k IGJ1ZmZlciBoZWFkcyBvZiB0aGUgZmlsZSdzIGRhdGENCix3aGljaCBhcmUgam91cm5hbGVkLCBh bmQgdHJhbnNmZXIgdGhlIGZvdW5kIGJ1ZmZlciBoZWFkcyB0byBleHQ0X2ZvcmdldCgpIGluDQpv cmRlciB0byBmb3JnZXQgYW5kIHJldm9rZSB0aGUgYnVmZmVyIGhlYWQgcmVsYXRlZCBqb3VybmFs IHJlY29yZC4gRm9yIHRoYXQsIA0Kd2UgbWlnaHQgbmVlZCB0byB0cmFuc2ZlciB0aGUgbG9naWNh bCBibG9jayBudW1iZXJzIG9mIHRoZSBidWZmZXIgaGVhZHMgb2YgDQpmaWxlcycgZGF0YSBibG9j a3MgdG8gZXh0NF9mcmVlX2Jsb2NrcygpLiBEbyB5b3UgaGF2ZSBhIGJldHRlciBpZGVhIHRvIHJl c29sdmUNCnRoaXMgcHJvYmxlbT8=