From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from cuda.sgi.com (cuda3.sgi.com [192.48.176.15]) by oss.sgi.com (8.14.3/8.14.3/SuSE Linux 0.8) with ESMTP id p0L2nOZn196658 for ; Thu, 20 Jan 2011 20:49:24 -0600 Received: from ipmail06.adl2.internode.on.net (localhost [127.0.0.1]) by cuda.sgi.com (Spam Firewall) with ESMTP id 1D37719FAFAD for ; Thu, 20 Jan 2011 18:51:43 -0800 (PST) Received: from ipmail06.adl2.internode.on.net (ipmail06.adl2.internode.on.net [150.101.137.129]) by cuda.sgi.com with ESMTP id MJd6Xy2luF8hlaPv for ; Thu, 20 Jan 2011 18:51:43 -0800 (PST) Date: Fri, 21 Jan 2011 13:51:40 +1100 From: Dave Chinner Subject: Re: Issues with delalloc->real extent allocation Message-ID: <20110121025140.GY16267@dastard> References: <20110114002900.GF16267@dastard> <20110114214334.GN28274@sgi.com> <20110114235549.GI16267@dastard> <20110118204752.GB28791@infradead.org> <20110118231831.GZ28803@dastard> <20110119120321.GC12941@infradead.org> <20110119133147.GN16267@dastard> <20110119135548.GA11502@infradead.org> <20110120013346.GO16267@dastard> <20110120144503.GA7225@sgi.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20110120144503.GA7225@sgi.com> List-Id: XFS Filesystem from SGI List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: xfs-bounces@oss.sgi.com Errors-To: xfs-bounces@oss.sgi.com To: Geoffrey Wehrman Cc: Christoph Hellwig , bpm@sgi.com, xfs@oss.sgi.com T24gVGh1LCBKYW4gMjAsIDIwMTEgYXQgMDg6NDU6MDNBTSAtMDYwMCwgR2VvZmZyZXkgV2Vocm1h biB3cm90ZToKPiBPbiBUaHUsIEphbiAyMCwgMjAxMSBhdCAxMjozMzo0NlBNICsxMTAwLCBEYXZl IENoaW5uZXIgd3JvdGU6Cj4gfCBHaXZlbiB0aGF0IFhGUyBpcyBhaW1lZCB0b3dhcmRzIG9wdGlt aXNpbmcgZm9yIHRoZSBsYXJnZSBmaWxlL2xhcmdlCj4gfCBJTy9oaWdoIHRocm91Z2hwdXQgdHlw ZSBvZiBhcHBsaWNhdGlvbiwgSSdtIGNvbWZvcnRhYmxlIHdpdGggc2F5aW5nCj4gfCB0aGF0IGF2 b2lkaW5nIHN1Yi1wYWdlIHdyaXRlcyBmb3Igb3B0aW1hbCB0aHJvdWdocHV0IElPIGlzIGFuCj4g fCBhcHBsaWNhdGlvbiBwcm9ibGVtIGFuZCBnb2luZyBmcm9tIHRoZXJlLiBFc3BlY2lhbGx5IGNv bnNpZGVyaW5nCj4gfCB0aGF0IHN0dWZmIGxpa2UgcnN5bmMgYW5kIHVudGFycmluZyBrZXJuZWwg dGFyYmFsbHMgYXJlIGFsbAo+IHwgYXBwZW5kaW5nIHdyaXRlcyBzbyB3b24ndCB0YWtlIGFueSBw ZXJmb3JtYW5jZSBoaXQgYXQgYWxsLi4uCj4gCj4gSSBhZ3JlZS4gIEkgZG8gbm90IGV4cGVjdCBz eXN0ZW1zIHdpdGggNjRLIHBhZ2VzIHRvIGJlIHVzZWQgZm9yIHNpbmdsZQo+IGJpdCBtYW5pcHVs YXRpb25zLiAgSG93ZXZlciwgSSBkbyBzZWUgYSBjb3VwbGUgb2YgcG90ZW50aWFsIHByb2JsZW1z Lgo+IAo+IFRoZSBvbmUgcGxhY2Ugd2hlcmUgcGFnZSBzaXplIEkvTyBtYXkgbm90IHdvcmsgdGhv dWdoIGlzIGZvciBhbiBETUFQSS9IU00KPiAoRE1GKSBtYW5hZ2VkIGZpbGVzeXN0ZW0gd2hlcmUg c29tZSBibG9ja3MgYXJlIG1hbmFnZWQgb24gbmVhci1saW5lIG1lZGlhLgo+IFRoZSBETUFQSSBu ZWVkcyB0byBiZSBhYmxlIHRvIHJlbW92ZSBhbmQgcmVzdG9yZSBleHRlbnRzIG9uIGEgZmlsZXN5 c3RlbQo+IGJsb2NrIGJvdW5kYXJ5LCBub3QgYSBwYWdlIGJvdW5kYXJ5LgoKRE1BUEkgaXMgc3Rp bGwgZnJlZSB0byByZW1vdmUgZXh0ZW50cyBhdCB3aGF0ZXZlciBib3VuZGFyeSBpdCB3YW50cy4K VGhlIG9ubHkgZGlmZmVyZW5jZSBpcyB0aGF0IGl0IHdvdWxkIGJlIGFza2VkIHRvIHJlc3RvcmUg ZXh0ZW50cyB0bwp0aGUgcGFnZSBib3VuZGFyeSB0aGUgd3JpdGUgY292ZXJzIHJhdGhlciB0aGFu IGEgYmxvY2sgYm91bmRhcnkuIFRoZQphbGxvY2F0aW9uIGFuZCBkaXJlY3QgSU8gYm91bmRhcmll cyBkbyBub3QgY2hhbmdlLCBzbyB0aGUgb25seSB0aGluZwp0aGF0IG5lZWRzIHRvIGNoYW5nZSBp cyB0aGUgcmFuZ2UgdGhhdCBETUFQSSBpcyB0b2xkIHRoYXQgdGhlCnJlYWQvd3JpdGUgaXMgZ29p bmcgdG8gY292ZXIuLi4uCgo+IFRoZSBvdGhlciBkb3duc2lkZSBpcyB0aGF0IGZvciBzcGFyc2Ug ZmlsZXMsIHdlIGNvdWxkIGVuZCB1cCBhbGxvY2F0aW5nCj4gc3BhY2UgZm9yIHplcm8gZmlsbGVk IGJsb2Nrcy4gIFRoZXJlIG1heSBiZSBzb21lIHdvcmtsb2FkcyB3aGVyZQo+IHNpZ25pZmljYW50 IHF1YW50aXRpZXMgb2Ygc3BhY2UgYXJlIHdhc3RlZC4KClllcywgdGhhdCBpcyBwb3NzaWJsZSwg dGhvdWdoIG9uIHRoZSBvdGhlciBoYW5kIGlzIHdpbGwgcmVkdWNlIHdvcnN0CmNhc2UgZnJhZ21l bnRhdGlvbiBvZiBwYXRob2xvZ2ljYWwgc3BhcnNlIGZpbGUgZmlsbGluZyBhcHBsaWNhdGlvbnMu CmUuZy4gb3V0LW9mLWNvcmUgc29sdmVycyB0aGF0IGRvIHN0cmlkZWQgd3JpdGVzIGFjcm9zcyB0 aGUgZmlsZSB0bwp3cml0ZSB0aGUgZmlyc3QgY29sdW1uIGluIHRoZSByZXN1bHQgbWF0cml4IGFz IGl0IGlzIGNhbGN1bGF0ZWQsCnRoZW4gdGhlIHNlY29uZCBjb2x1bW4sIHRoZW4gdGhlIHRoaXJk IC4uLiAgdW50aWwgYWxsIGNvbHVtbnMgYXJlCndyaXR0ZW4uCgotLS0tCgpSZWFsaXN0aWNhbGx5 LCBmb3IgZXZlcnkgZGlzYWR2YW50YWdlIG9yIGFkdmFudGFnZSB3ZSBjYW4gZW51bWVyYXRlCmZv ciBzcGVjaWZpYyB3b3JrbG9hZHMsIEkgdGhpbmsgb25lIG9mIHVzIHdpbGwgYmUgYWJsZSB0byBj b21lIHVwCndpdGggYSBjb3VudGVyIGV4YW1wbGUgdGhhdCBzaG93cyB0aGUgb3Bwb3NpdGUgb2Yg dGhlIG9yaWdpbmFsCnBvaW50LiBJIGRvbid0IHRoaW5rIHRoaXMgc29ydCBvZiBhcmd1bWVudCBp cyBwYXJ0aWN1bGFybHkKcHJvZHVjdGl2ZS4gOi8KCkluc3RlYWQsIEkgbG9vayBhdCBpdCBmcm9t IHRoZSBwb2ludCBvZiB2aWV3IHRoYXQgYSA2NGsgSU8gaXMgbGl0dGxlCnNsb3dlciB0aGFuIGEg NGsgSU8gc28gc3VjaCBhIGNoYW5nZSB3b3VsZCBub3QgbWFrZSBtdWNoIGRpZmZlcmVuY2UKdG8g cGVyZm9ybWFuY2UuIEFuZCBnaXZlbiB0aGF0IHRlcmFieXRlcyBvZiBzdG9yYWdlIGNhcGFjaXR5 IGlzCl9jaGVhcF8gdGhlc2UgZGF5cyAoYW5kIGdldHRpbmcgY2hlYXBlciBhbGwgdGhlIHRpbWUp LCB0aGUgZXh0cmEKc3BhY2Ugb2YgdXNpbmcgNjRrIGluc3RlYWQgb2YgNGsgZm9yIHNwYXJzZSBi bG9ja3MgaXNuJ3QgYSBiaWcgZGVhbC4KCldoZW4gSSBjb21iaW5lIHRoYXQgd2l0aCBteSBleHBl cmllbmNlIGZyb20gU0dJIHdoZXJlIHdlIGFsd2F5cwpyZWNvbW1lbmRlZCB1c2luZyBmaWxlc3lz dGVtcyBibG9jayBzaXplID09IHBhZ2Ugc2l6ZSBmb3IgYmVzdCBJTwpwZXJmb3JtYW5jZSBvbiBI UEMgc2V0dXBzLCB0aGVyZSdzIGEgZmFpciBhcmd1bWVudCB0aGF0IHVzaW5nIHBhZ2UKc2l6ZSBl eHRlbnRzIGZvciBzbWFsbCBzcGFyc2Ugd3JpdGVzIGlzbid0IGEgcHJvYmxlbSB3ZSByZWFsbHkg bmVlZAp0byBjYXJlIGFib3V0LgoK0IYnZCBwcmVmZXIgdG8gZGVzaWduIGZvciB3aGVyZSB3ZSBl eHBlY3Qgc3RvcmFnZSB0byBiZSBpbiB0aGUgbmV4dApmZXcgeWVhcnMgZS5nLiAxMFRCIHNwaW5k bGVzLiBNaW5pbWlzaW5nIHNwYWNlIHVzYWdlIGlzIG5vdCBhIGJpZwpwcmlvcml0eSB3aGVuIHdl IGNvbnNpZGVyIHRoYXQgaW4gMi0zIHllYXJzIDEwMFRCIG9mIHN0b3JhZ2Ugd2lsbApjb3N0IGxl c3MgdGhhbiAkNTAwMCAoaXQncyBhYm91dCAkMTUtMjBrIHJpZ2h0IG5vdykuICBFdmVuIG9uCmRl c2t0b3BzIHdlJ3JlIGdvaW5nIHRvIGhhdmUgbW9yZSBjYXBhY2l0eSB0aGF0IHdlIGtub3cgd2hh dCB0byBkbwp3aXRoLCBzbyB0cmFkaW5nIG9mZiBzdG9yYWdlIHNwYWNlIGZvciBsb3dlciBtZW1v cnkgb3ZlcmhlYWQsIGxvd2VyCm1ldGFkYXRhIElPIG92ZXJoZWFkIGFuZCBsb3dlciBwb3RlbnRp YWwgZnJhZ21lbnRhdGlvbiBzZWVtcyBsaWtlCnRoZSByaWdodCB3YXkgdG8gbW92ZSBmb3J3YXJk IHRvIG1lLgoKRG9lcyB0aGF0IHNlZW0gbGlrZSBhIHJlYXNvbmFibGUgcG9zaXRpb24gdG8gdGFr ZSwgb3IgYXJlIHRoZXJlCm90aGVyIGZhY3RvcnMgdGhhdCB5b3UgdGhpbmsgSSBzaG91bGQgYmUg Y29uc2lkZXJpbmc/CgpDaGVlcnMsCgpEYXZlLgotLSAKRGF2ZSBDaGlubmVyCmRhdmlkQGZyb21v cmJpdC5jb20KCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f CnhmcyBtYWlsaW5nIGxpc3QKeGZzQG9zcy5zZ2kuY29tCmh0dHA6Ly9vc3Muc2dpLmNvbS9tYWls bWFuL2xpc3RpbmZvL3hmcwo=