From: Dave Chinner Subject: Re: [PATCH 0/6][RFC] Introduce FALLOC_FL_ZERO_RANGE flag for fallocate Date: Tue, 18 Feb 2014 20:41:42 +1100 Message-ID: <20140218094142.GC28666@dastard> References: <1392649703-10772-1-git-send-email-lczerner@redhat.com> <20140218010138.GE13997@dastard> <20140218083324.GB28666@dastard> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Cc: linux-fsdevel@vger.kernel.org, linux-ext4@vger.kernel.org, tytso@mit.edu, xfs@oss.sgi.com To: =?utf-8?B?THVrw6HFoQ==?= Czerner Return-path: Content-Disposition: inline In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: xfs-bounces@oss.sgi.com Sender: xfs-bounces@oss.sgi.com List-Id: linux-ext4.vger.kernel.org T24gVHVlLCBGZWIgMTgsIDIwMTQgYXQgMTA6MDk6NDhBTSArMDEwMCwgTHVrw6HFoSBDemVybmVy IHdyb3RlOgo+IE9uIFR1ZSwgMTggRmViIDIwMTQsIERhdmUgQ2hpbm5lciB3cm90ZToKPiAKPiA+ IERhdGU6IFR1ZSwgMTggRmViIDIwMTQgMTk6MzM6MjQgKzExMDAKPiA+IEZyb206IERhdmUgQ2hp bm5lciA8ZGF2aWRAZnJvbW9yYml0LmNvbT4KPiA+IFRvOiBMdWthcyBDemVybmVyIDxsY3plcm5l ckByZWRoYXQuY29tPgo+ID4gQ2M6IGxpbnV4LWV4dDRAdmdlci5rZXJuZWwub3JnLCB0eXRzb0Bt aXQuZWR1LCBsaW51eC1mc2RldmVsQHZnZXIua2VybmVsLm9yZywKPiA+ICAgICB4ZnNAb3NzLnNn aS5jb20KPiA+IFN1YmplY3Q6IFJlOiBbUEFUQ0ggMC82XVtSRkNdIEludHJvZHVjZSBGQUxMT0Nf RkxfWkVST19SQU5HRSBmbGFnIGZvcgo+ID4gICAgIGZhbGxvY2F0ZQo+ID4gCj4gPiBPbiBUdWUs IEZlYiAxOCwgMjAxNCBhdCAxMjowMTozOFBNICsxMTAwLCBEYXZlIENoaW5uZXIgd3JvdGU6Cj4g PiA+IE9uIE1vbiwgRmViIDE3LCAyMDE0IGF0IDA0OjA4OjE3UE0gKzAxMDAsIEx1a2FzIEN6ZXJu ZXIgd3JvdGU6Cj4gPiA+ID4gSW50cm9kdWNlIG5ldyBGQUxMT0NfRkxfWkVST19SQU5HRSBmbGFn IGZvciBmYWxsb2NhdGUuIFRoaXMgaGFzIHRoZSBzYW1lCj4gPiA+ID4gZnVuY3Rpb25hbGl0eSBh cyB4ZnMgaW9jdGwgWEZTX0lPQ19aRVJPX1JBTkdFLgo+ID4gPiA+IAo+ID4gPiA+IEl0IGNhbiBi ZSB1c2VkIHRvIGNvbnZlcnQgYSByYW5nZSBvZiBmaWxlIHRvIHplcm9zIHByZWZlcmFibHkgd2l0 aG91dAo+ID4gPiA+IGlzc3VpbmcgZGF0YSBJTy4gQmxvY2tzIHNob3VsZCBiZSBwcmVhbGxvY2F0 ZWQgZm9yIHRoZSByZWdpb25zIHRoYXQgc3Bhbgo+ID4gPiA+IGhvbGVzIGluIHRoZSBmaWxlLCBh bmQgdGhlIGVudGlyZSByYW5nZSBpcyBwcmVmZXJhYmxlIGNvbnZlcnRlZCB0bwo+ID4gPiA+IHVu d3JpdHRlbiBleHRlbnRzIC0gZXZlbiB0aG91Z2ggZmlsZSBzeXN0ZW0gbWF5IGNob29zZSB0byB6 ZXJvIG91dCB0aGUKPiA+ID4gPiBleHRlbnQgb3IgZG8gd2hhdGV2ZXIgd2hpY2ggd2lsbCByZXN1 bHQgaW4gcmVhZGluZyB6ZXJvcyBmcm9tIHRoZSByYW5nZQo+ID4gPiA+IHdoaWxlIHRoZSByYW5n ZSByZW1haW5zIGFsbG9jYXRlZCBmb3IgdGhlIGZpbGUuCj4gPiA+ID4gCj4gPiA+ID4gVGhpcyBj YW4gYmUgYWxzbyB1c2VkIHRvIHByZWFsbG9jYXRlIGJsb2NrcyBwYXN0IEVPRiBpbiB0aGUgc2Ft ZSB3YXkgYXMKPiA+ID4gPiB3aXRoIGZhbGxvY2F0ZS4gRmxhZyBGQUxMT0NfRkxfS0VFUF9TSVpF IHdoaWNoIHNob3VsZCBjYXVzZSB0aGUgaW5vZGUKPiA+ID4gPiBzaXplIHRvIHJlbWFpbiB0aGUg c2FtZS4KPiA+ID4gPiAKPiA+ID4gPiBZb3UgY2FuIHRlc3QgdGhpcyBmZWF0dXJlIHlvdXJzZWxm IHVzaW5nIHhmc3Rlc3RzLCBvZiBmYWxsb2NhdGUoMSkgaG93ZXZlcgo+ID4gPiA+IHlvdSdsbCBu ZWVkIHBhdGNoZXMgZm9yIHV0aWxfbGludXgsIHhmc3Byb2dzIGFuZCB4ZnN0ZXN0cyB3aGljaCB5 b3UKPiA+ID4gPiBjYW4gZmluZCBoZXJlOgo+ID4gPiA+IAo+ID4gPiA+IGh0dHA6Ly9wZW9wbGUu cmVkaGF0LmNvbS9sY3plcm5lci96ZXJvX3JhbmdlLwo+ID4gPiA+IAo+ID4gPiA+IEknbGwgcG9z dCB0aGUgcGF0Y2hlcyBhZnRlciB3ZSBhZ3JlZSBhbmQgbWVyZ2UgdGhlIGtlcm5lbCBmdW5jdGlv bmFsaXR5Lgo+ID4gPiA+IAo+ID4gPiA+IEkgdGVzdGVkIHRoaXMgbW9zdGx5IHdpdGggYSBzdWJz ZXQgb2YgeGZzdGVzdHMgdXNpbmcgZnN4IGFuZCBmc3N0cmVzcyBhbmQKPiA+ID4gPiBldmVuIHdp dGggbmV3IGdlbmVyaWMvMjkwIHdoaWNoIGlzIGp1c3QgYSBjb3B5IG9mIHhmcy8yOTAgdXNpbnog Znplcm8KPiA+ID4gPiBjb21tYW5kIGZvciB4ZnNfaW8gaW5zdGVhZCBvZiB6ZXJvICh3aGljaCB1 c2VzIGlvY3RsKS4gSSB3YXMgdGVzdGluZyBvbgo+ID4gPiA+IHg4Nl82NCBhbmQgcHBjNjQgd2l0 aCBibG9jayBzaXplcyBvZiAxMDI0LCAyMDQ4IGFuZCA0MDk2Lgo+ID4gPiAKPiA+ID4gWW91IGFs c28gd2FudCB0byBjb252ZXJ0IHhmcy8yNDIgdG8gYmUgYSBnZW5lcmljIHRlc3QgLSBpdCB1c2Vz IHRoZQo+ID4gPiBfZ2VuZXJpY190ZXN0X3B1bmNoIGhlbHBlciB0byB0ZXN0IGFsbCB0aGUgY29y bmVyIGNhc2VzIGFjcm9zcwo+ID4gPiBkaWZmZXJlbnQgZXh0ZW50IHR5cGUgdHJhbnNpdGlvbnMu Cj4gCj4gVGhhdCB3YXMgdGhlIHBsYW4gb3JpZ2luYWxseSwgaG93ZXZlciBpdCB1c2VzIHhmcyBi bWFwIHdoaWNoIGlzIG5vdAo+IHN1cHBvcnRlZCBmb3Igb3RoZXIgZmlsZSBzeXN0ZW1zLiBCdXQg SSBjYW4gdGFrZSBhIGJldHRlciBsb29rIGFuZAo+IHBvc3NpYmx5IHBvcnQgaXQgdG8gZ2VuZXJp YyBhcyB3ZWxsLgoKU2ltcGx5IHBhc3MgZmllbWFwIHJhdGhlciB0aGFuICJibWFwIC12IiBsaWtl IGFsbCB0aGUgb3RoZXIgZmFsbG9jCnRlc3RzIGRvLiBUaGUgb3V0cHV0IG9mIHRoZSB4ZnNfaW8g ZmllbWFwIGFuZCBibWFwIGNvbW1hbmRzIGlzCnByZXR0eSBtdWNoIGlkZW50aWNhbCBzbyB0aGlz IHNob3VsZG4ndCBiZSBhbiBpc3N1ZS4KCj4gPiA+ID4gLi9jaGVjayBnZW5lcmljLzA3NiBnZW5l cmljLzIzMiBnZW5lcmljLzAxMyBnZW5lcmljLzA3MCBnZW5lcmljLzI2OSBnZW5lcmljLzA4MyBn ZW5lcmljLzExNyBnZW5lcmljLzA2OCBnZW5lcmljLzIzMSBnZW5lcmljLzEyNyBnZW5lcmljLzA5 MSBnZW5lcmljLzA3NSBnZW5lcmljLzExMiBnZW5lcmljLzI2MyBnZW5lcmljLzA5MSBnZW5lcmlj LzA3NSBnZW5lcmljLzI1NiBnZW5lcmljLzI1NSBnZW5lcmljLzMxNiBnZW5lcmljLzMwMCBnZW5l cmljLzI5MDsKPiA+IAo+ID4gRldJVy4gaWYgdGhhdCdzIGEgZ3JvdXAgb2YgdGVzdHMgeW91IGNv bnNpZGVyIGdvb2QgZm9yIHRlc3RpbmcKPiA+IGV4dGVudCB0cmVlIG1vZGlmaWNhdGlvbnMsIHRo ZW4gY2FuIHlvdSBjcmVhdGUgYSB0ZXN0IGdyb3VwIGZvcgo+ID4gdGhlc2UgYnkgYWRkaW5nICJl eHRlbnQiIHRvIGVhY2ggb2YgdGhlIHRlc3RzIGluIHRoZSBncm91cCBmaWxlPwo+IAo+IEkndmUg bWFkZSBwYXRjaGVzIGFkZGluZyBzdXBwb3J0IGZvciBGQUxMT0NfRkxfWkVST19SQU5HRSBpbnRv IGZzeAo+IGFuZCBmc3N0cmVzcyBzbyB0aG9zZSB0ZXN0cyBhcmUgbW9zdGx5IHRlc3RzIHdoaWNo IGFyZSB1c2luZyBmc3ggYW5kCj4gZnNzdHJlc3MuCgpPaywgc28gaXQncyBhICJmYWxsb2NhdGUi IHRlc3QgZ3JvdXAsIHRoZW4/CgpDaGVlcnMsCgpEYXZlLgotLSAKRGF2ZSBDaGlubmVyCmRhdmlk QGZyb21vcmJpdC5jb20KCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fCnhmcyBtYWlsaW5nIGxpc3QKeGZzQG9zcy5zZ2kuY29tCmh0dHA6Ly9vc3Muc2dpLmNv bS9tYWlsbWFuL2xpc3RpbmZvL3hmcwo=