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 p5271iBM180537 for ; Thu, 2 Jun 2011 02:01:44 -0500 Received: from ipmail06.adl2.internode.on.net (localhost [127.0.0.1]) by cuda.sgi.com (Spam Firewall) with ESMTP id 808A11ED18EE for ; Thu, 2 Jun 2011 00:01:42 -0700 (PDT) Received: from ipmail06.adl2.internode.on.net (ipmail06.adl2.internode.on.net [150.101.137.129]) by cuda.sgi.com with ESMTP id BVnfx74hwhde5ET5 for ; Thu, 02 Jun 2011 00:01:42 -0700 (PDT) From: Dave Chinner Subject: [PATCH 03/12] vmscan: reduce wind up shrinker->nr when shrinker can't do work Date: Thu, 2 Jun 2011 17:00:58 +1000 Message-Id: <1306998067-27659-4-git-send-email-david@fromorbit.com> In-Reply-To: <1306998067-27659-1-git-send-email-david@fromorbit.com> References: <1306998067-27659-1-git-send-email-david@fromorbit.com> MIME-Version: 1.0 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: linux-fsdevel@vger.kernel.org Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, xfs@oss.sgi.com RnJvbTogRGF2ZSBDaGlubmVyIDxkY2hpbm5lckByZWRoYXQuY29tPgoKV2hlbiBhIHNocmlua2Vy IHJldHVybnMgLTEgdG8gc2hyaW5rX3NsYWIoKSB0byBpbmRpY2F0ZSBpdCBjYW5ub3QgZG8KYW55 IHdvcmsgZ2l2ZW4gdGhlIGN1cnJlbnQgbWVtb3J5IHJlY2xhaW0gcmVxdWlyZW1lbnRzLCBpdCBh ZGRzIHRoZQplbnRpcmUgdG90YWxfc2NhbiBjb3VudCB0byBzaHJpbmtlci0+bnIuIFRoZSBpZGVh IGVoaW5kIHRoaXMgaXMgdGhhdAp3aGVudGVoIHNocmlua2VyIGlzIG5leHQgY2FsbGVkIGFuZCBj YW4gZG8gd29yaywgaXQgd2lsbCBkbyB0aGUgd29yawpvZiB0aGUgcHJldmlvdXNseSBhYm9ydGVk IHNocmlua2VyIGNhbGwgYXMgd2VsbC4KCkhvd2V2ZXIsIGlmIGEgZmlsZXN5c3RlbSBpcyBkb2lu ZyBsb3RzIG9mIGFsbG9jYXRpb24gd2l0aCBHRlBfTk9GUwpzZXQsIHRoZW4gd2UgZ2V0IG1hbnks IG1hbnkgbW9yZSBhYm9ydHMgZnJvbSB0aGUgc2hyaW5rZXJzIHRoYW4gd2UKZG8gc3VjY2Vzc2Z1 bCBjYWxscy4gVGhlIHJlc3VsdCBpcyB0aGF0IHNocmlua2VyLT5uciB3aW5kcyB1cCB0bwppdCdz IG1heGltdW0gcGVybWlzc2libGUgdmFsdWUgKHR3aWNlIHRoZSBjdXJyZW50IGNhY2hlIHNpemUp IGFuZAp0aGVuIHdoZW4gdGhlIG5leHQgc2hyaW5rZXIgY2FsbCB0aGF0IGNhbiBkbyB3b3JrIGlz IGlzc3VlZCwgaXQKaGFzIGVub3VnaCBzY2FuIGNvdW50IGJ1aWx0IHVwIHRvIGZyZWUgdGhlIGVu dGlyZSBjYWNoZSB0d2ljZSBvdmVyLgoKVGhpcyBtYW5pZmVzdHMgaXRzZWxmIGluIHRoZSBjYWNo ZSBnb2luZyBmcm9tIGZ1bGwgdG8gZW1wdHkgaW4gYQptYXR0ZXIgb2Ygc2Vjb25kcywgZXZlbiB3 aGVuIG9ubHkgYSBzbWFsbCBwYXJ0IG9mIHRoZSBjYWNoZSBpcwpuZWVkZWQgdG8gYmUgZW1wdGll ZCB0byBmcmVlIHN1ZmZpY2llbnQgbWVtb3J5LgoKVW5kZXIgbWV0YWRhdGEgaW50ZW5zaXZlIHdv cmtsb2FkcyBvbiBleHQ0IGFuZCBYRlMsIEknbSBzZWVpbmcgdGhlClZGUyBjYWNoZXMgaW5jcmVh c2UgbWVtb3J5IGNvbnN1bXB0aW9uIHVwIHRvIDc1JSBvZiBtZW1vcnkgKG5vIHBhZ2UKY2FjaGUg cHJlc3N1cmUpIG92ZXIgYSBwZXJpb2Qgb2YgMzAtNjBzLCBhbmQgdGhlbiB0aGUgc2hyaW5rZXIK ZW1wdGllcyB0aGVtIGRvd24gdG8gemVybyBpbiB0aGUgc3BhY2Ugb2YgMi0zcy4gVGhpcyBjeWNs ZSByZXBlYXRzCm92ZXIgYW5kIG92ZXIgYWdhaW4sIHdpdGggdGhlIHNocmlua2VyIGNvbXBsZXRl bHkgdHJhc2hpbmcgdGhlINGWbm9kZQphbmQgZGVudHJ5IGNhY2hlcyBldmVyeSBtaW51dGUgb3Ig c28gdGhlIHdvcmtsb2FkIGNvbnRpbnVlcy4KClRoaXMgYmVoYXZpb3VyIHdhcyBtYWRlIG9idmlv dXMgYnkgdGhlIHNocmlua19zbGFiIHRyYWNlcG9pbnRzIGFkZGVkCmVhcmxpZXIgaW4gdGhlIHNl cmllcywgYW5kIG1hZGUgd29yc2UgYnkgdGhlIHBhdGNoIHRoYXQgY29ycmVjdGVkCnRoZSBjb25j dXJyZW50IGFjY291bnRpbmcgb2Ygc2hyaW5rZXItPm5yLgoKVG8gYXZvaWQgdGhpcyBwcm9ibGVt LCBzdG9wIHJlcGVhdGVkIHNtYWxsIGluY3JlbWVudHMgb2YgdGhlIHRvdGFsCnNjYW4gdmFsdWUg ZnJvbSB3aW5kaW5nIHNocmlua2VyLT5uciB1cCB0byBhIHZhbHVlIHRoYXQgY2FuIGNhdXNlCnRo ZSBlbnRpcmUgY2FjaGUgdG8gYmUgZnJlZWQuIFdlIHN0aWxsIG5lZWQgdG8gYWxsb3cgaXQgdG8g d2luZCB1cCwKc28gdXNlIHRoZSBkZWx0YSBhcyB0aGUgImxhcmdlIHNjYW4iIHRocmVzaG9sZCBj aGVjayAtIGlmIHRoZSBkZWx0YQppcyBtb3JlIHRoYW4gYSBxdWFydGVyIG9mIHRoZSBlbnRpcmUg Y2FjaGUgc2l6ZSwgdGhlbiBpdCBpcyBhIGxhcmdlCnNjYW4gYW5kIGFsbG93ZWQgdG8gY2F1c2Ug bG90cyBvZiB3aW5kdXAgYmVjYXVzZSB3ZSBhcmUgY2xlYXJseQpuZWVkaW5nIHRvIGZyZWUgbG90 cyBvZiBtZW1vcnkuCgpJZiBpdCBpc24ndCBhIGxhcmdlIHNjYW4gdGhlbiBsaW1pdCB0aGUgdG90 YWwgc2NhbiB0byBoYWxmIHRoZSBzaXplCm9mIHRoZSBjYWNoZSBzbyB0aGF0IHdpbmR1cCBuZXZl ciBpbmNyZWFzZXMgdG8gY29uc3VtZSB0aGUgd2hvbGUKY2FjaGUuIFJlZHVjaW5nIHRoZSB0b3Rh bCBzY2FuIGxpbWl0IGZ1cnRoZXIgZG9lcyBub3QgYWxsb3cgZW5vdWdoCndpbmQtdXAgdG8gbWFp bnRhaW4gdGhlIGN1cnJlbnQgbGV2ZWxzIG9mIHBlcmZvcm1hbmNlLCB3aGlsc3QgYQpoaWdoZXIg dGhyZXNob2xkIGRvZXMgbm90IHByZXZlbnQgdGhlIHdpbmR1cCBmcm9tIGZyZWVpbmcgdGhlIGVu dGlyZQpjYWNoZSB1bmRlciBzdXN0YWluZWQgd29ya2xvYWRzLgoKU2lnbmVkLW9mZi1ieTogRGF2 ZSBDaGlubmVyIDxkY2hpbm5lckByZWRoYXQuY29tPgotLS0KIG1tL3Ztc2Nhbi5jIHwgICAxNCAr KysrKysrKysrKysrKwogMSBmaWxlcyBjaGFuZ2VkLCAxNCBpbnNlcnRpb25zKCspLCAwIGRlbGV0 aW9ucygtKQoKZGlmZiAtLWdpdCBhL21tL3Ztc2Nhbi5jIGIvbW0vdm1zY2FuLmMKaW5kZXggZGNl Mjc2Ny4uMzY4OGY0NyAxMDA2NDQKLS0tIGEvbW0vdm1zY2FuLmMKKysrIGIvbW0vdm1zY2FuLmMK QEAgLTI3Nyw2ICsyNzcsMjAgQEAgdW5zaWduZWQgbG9uZyBzaHJpbmtfc2xhYihzdHJ1Y3Qgc2hy aW5rX2NvbnRyb2wgKnNocmluaywKIAkJfQogCiAJCS8qCisJCSAqIEF2b2lkIGV4Y2Vzc2l2ZSB3 aW5kdXAgb24gZmllbHN5c3RlbSBzaHJpbmtlcnMgZHVlIHRvIGxhcmdlCisJCSAqIG51bWJlcnMg b2YgR0ZQX05PRlMgYWxsb2NhdGlvbnMgY2F1c2luZyB0aGUgc2hyaW5rZXJzIHRvCisJCSAqIHJl dHVybiAtMSBhbGwgdGhlIHRpbWUuIFRoaXMgcmVzdWx0cyBpbiBhIGxhcmdlIG5yIGJlaW5nCisJ CSAqIGJ1aWx0IHVwIHNvIHdoZW4gYSBzaHJpbmsgdGhhdCBjYW4gZG8gc29tZSB3b3JrIGNvbWVz IGFsb25nCisJCSAqIGl0IGVtcHRpZXMgdGhlIGVudGlyZSBjYWNoZSBkdWUgdG8gbnIgPj4+IG1h eF9wYXNzLiAgVGhpcyBpcworCQkgKiBiYWQgZm9yIHN1c3RhaW5pbmcgYSB3b3JraW5nIHNldCBp biBtZW1vcnkuCisJCSAqCisJCSAqIEhlbmNlIG9ubHkgYWxsb3cgbnIgdG8gZ28gbGFyZ2Ugd2hl biBhIGxhcmdlIGRlbHRhIGlzCisJCSAqIGNhbGN1bGF0ZWQuCisJCSAqLworCQlpZiAoZGVsdGEg PCBtYXhfcGFzcyAvIDQpCisJCQl0b3RhbF9zY2FuID0gbWluKHRvdGFsX3NjYW4sIG1heF9wYXNz IC8gMik7CisKKwkJLyoKIAkJICogQXZvaWQgcmlza2luZyBsb29waW5nIGZvcmV2ZXIgZHVlIHRv IHRvbyBsYXJnZSBuciB2YWx1ZToKIAkJICogbmV2ZXIgdHJ5IHRvIGZyZWUgbW9yZSB0aGFuIHR3 aWNlIHRoZSBlc3RpbWF0ZSBudW1iZXIgb2YKIAkJICogZnJlZWFibGUgZW50cmllcy4KLS0gCjEu Ny41LjEKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCnhm cyBtYWlsaW5nIGxpc3QKeGZzQG9zcy5zZ2kuY29tCmh0dHA6Ly9vc3Muc2dpLmNvbS9tYWlsbWFu L2xpc3RpbmZvL3hmcwo=