From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.5 required=3.0 tests=BAYES_00,DKIM_ADSP_CUSTOM_MED, DKIM_INVALID,DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 23CCFC433E0 for ; Fri, 5 Feb 2021 08:33:43 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id BFE6C64FBB for ; Fri, 5 Feb 2021 08:33:42 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org BFE6C64FBB Authentication-Results: mail.kernel.org; dmarc=fail (p=reject dis=none) header.from=google.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 0075A6EB10; Fri, 5 Feb 2021 08:33:35 +0000 (UTC) Received: from mail-wm1-x330.google.com (mail-wm1-x330.google.com [IPv6:2a00:1450:4864:20::330]) by gabe.freedesktop.org (Postfix) with ESMTPS id EC1796E15D for ; Fri, 5 Feb 2021 03:39:32 +0000 (UTC) Received: by mail-wm1-x330.google.com with SMTP id c127so4759551wmf.5 for ; Thu, 04 Feb 2021 19:39:32 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc:content-transfer-encoding; bh=EdjLgTFEfuQJGZBK+nXnyy4MdoUmVzeK7aTpj4p2cVs=; b=G0PEitJ+usd81lX6EDaRByi5sRj40yJPc5uhcY6QEK2X9Wq/MFm/0TXDN4RVz4ZQ6A ul/qH0mY8Lsr3XrIXuQOWFAtdI0BS6f2CpejnwFRIr29LWuWTbar+iE+BI3jzBNT/8pz bN4/D1zo8nWzktWb4bINMtYivhqcbzqgdnInQZ/8/0sEewECFyCYy640waGWJY0G1pqw Cm3UCGiNdKrJ6Z6enQVnga+JRIGdwAuAA2hDqGOY/AMehsv5k1ZgBGklnwlaTS/3abdO m/3btPqZdflTc78uLwP6rbg6URCpuKVpD+NEZtDZBBCapZrQXXYqV4CSKeCEy6/4DkV2 uZhA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc:content-transfer-encoding; bh=EdjLgTFEfuQJGZBK+nXnyy4MdoUmVzeK7aTpj4p2cVs=; b=mkjKFvOLVfiilmtq5AYHSK4XmbETIb/NVnyBMlKBlw1LUwpqmUGZTWCSpHMKyQC1hv DAo+ViuvreWRJvVRTfQjnfMSoddVb0MmwOmUe4Eigoj74nMpIw2Ek1jW22AJ3IXxLJ5I YOehhxBBn6TEnFXHNaaZpAhE9o6so9zk2mjj/vS6wgtorl5TX2iVHFuqEfaQaUG0skvw 12U6JJDo+KxSHf87brz9UTIVVkLFZDly27dzl3dosvndgvbI3Tp+3EovZGSa9WaW5L2M rToiy8VwutHdUVeoaPxsW7QDnu7xtSMX+JYyvVY5+GUJZJyZnT++1iWCzE+NYsK6U14A sUNw== X-Gm-Message-State: AOAM531iITuOrx17zsKgZTq8AdGRArXN5PDtDhtQ7LM6ifOV/x+awhXi FjhoPXSkJW1hgXqLAMcyCm0Zoq+xGV2nrc4Tb5TR5w== X-Google-Smtp-Source: ABdhPJwQJDGTRMEZ//zE5/HAppxy72r/wRamcStzdUixQgW9nAir2xq28+kgXZDBfrH14dhfKQY0nMy71MkA5Gx9FJg= X-Received: by 2002:a05:600c:4fcb:: with SMTP id o11mr1704797wmq.88.1612496371382; Thu, 04 Feb 2021 19:39:31 -0800 (PST) MIME-Version: 1.0 References: <20210203003134.2422308-1-surenb@google.com> <20210203015553.GX308988@casper.infradead.org> In-Reply-To: From: Suren Baghdasaryan Date: Thu, 4 Feb 2021 19:39:20 -0800 Message-ID: Subject: Re: [Linaro-mm-sig] [PATCH 1/2] mm: replace BUG_ON in vm_insert_page with a return of an error To: Alex Deucher X-Mailman-Approved-At: Fri, 05 Feb 2021 08:33:33 +0000 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: "moderated list:DMA BUFFER SHARING FRAMEWORK" , Android Kernel Team , Sandeep Patil , Liam Mark , Minchan Kim , Daniel Vetter , James Jones , Linux Kernel Mailing List , dri-devel , Christoph Hellwig , Linux MM , Matthew Wilcox , Chris Goldsworthy , Hridya Valsaraju , Andrew Morton , Robin Murphy , =?UTF-8?Q?Christian_K=C3=B6nig?= , "open list:DMA BUFFER SHARING FRAMEWORK" Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" T24gVGh1LCBGZWIgNCwgMjAyMSBhdCA3OjU1IEFNIEFsZXggRGV1Y2hlciA8YWxleGRldWNoZXJA Z21haWwuY29tPiB3cm90ZToKPgo+IE9uIFRodSwgRmViIDQsIDIwMjEgYXQgMzoxNiBBTSBDaHJp c3RpYW4gS8O2bmlnIDxjaHJpc3RpYW4ua29lbmlnQGFtZC5jb20+IHdyb3RlOgo+ID4KPiA+IEFt IDAzLjAyLjIxIHVtIDIyOjQxIHNjaHJpZWIgU3VyZW4gQmFnaGRhc2FyeWFuOgo+ID4gPiBbU05J UF0KPiA+ID4+PiBIb3cgbWFueSBzZW1pLXVucmVsYXRlZCBidWZmZXIgYWNjb3VudGluZyBzY2hl bWVzIGRvZXMgZ29vZ2xlIGNvbWUgdXAgd2l0aD8KPiA+ID4+Pgo+ID4gPj4+IFdlJ3JlIGF0IHRo cmVlIHdpdGggdGhpcyBvbmUuCj4gPiA+Pj4KPiA+ID4+PiBBbmQgYWxzbyB3ZSBfY2Fubm90XyBy ZXF1aXJlZCB0aGF0IGFsbCBkbWEtYnVmcyBhcmUgYmFja2VkIGJ5IHN0cnVjdAo+ID4gPj4+IHBh Z2UsIHNvIHJlcXVpcmluZyBzdHJ1Y3QgcGFnZSB0byBtYWtlIHRoaXMgd29yayBpcyBhIG5vLWdv Lgo+ID4gPj4+Cj4gPiA+Pj4gU2Vjb25kLCB3ZSBkbyBub3Qgd2FudCB0byBhbGwgZ2V0X3VzZXJf cGFnZXMgYW5kIGZyaWVuZHMgdG8gd29yayBvbgo+ID4gPj4+IGRtYS1idWYsIGl0IGNhdXNlcyBh bGwga2luZHMgb2YgcGFpbi4gWWVzIG9uIFNvQyB3aGVyZSBkbWEtYnVmIGFyZQo+ID4gPj4+IGV4 Y2x1c2l2ZWx5IGluIHN5c3RlbSBtZW1vcnkgeW91IGNhbiBtYXliZSBnZXQgYXdheSB3aXRoIHRo aXMsIGJ1dAo+ID4gPj4+IGRtYS1idWYgaXMgc3VwcG9zZWQgdG8gd29yayBpbiBtb3JlIHBsYWNl cyB0aGFuIGp1c3QgQW5kcm9pZCBTb0NzLgo+ID4gPj4gSSBqdXN0IHJlYWxpemVkIHRoYXQgdm1f aW5zZXJfcGFnZSBkb2Vzbid0IGV2ZW4gd29yayBmb3IgQ01BLCBpdCB3b3VsZAo+ID4gPj4gdXBz ZXQgZ2V0X3VzZXJfcGFnZXMgcHJldHR5IGJhZGx5IC0geW91J3JlIHRyeWluZyB0byBwaW4gYSBw YWdlIGluCj4gPiA+PiBaT05FX01PVkVBQkxFIGJ1dCB5b3UgY2FuJ3QgbW92ZSBpdCBiZWNhdXNl IGl0J3MgcmF0aGVyIHNwZWNpYWwuCj4gPiA+PiBWTV9TUEVDSUFMIGlzIGV4YWN0bHkgbWVhbnQg dG8gY2F0Y2ggdGhpcyBzdHVmZi4KPiA+ID4gVGhhbmtzIGZvciB0aGUgaW5wdXQsIERhbmllbCEg TGV0IG1lIHRoaW5rIGFib3V0IHRoZSBjYXNlcyB5b3UgcG9pbnRlZCBvdXQuCj4gPiA+Cj4gPiA+ IElNSE8sIHRoZSBpc3N1ZSB3aXRoIFBTUyBpcyB0aGUgZGlmZmljdWx0eSBvZiBjYWxjdWxhdGlu ZyB0aGlzIG1ldHJpYwo+ID4gPiB3aXRob3V0IHN0cnVjdCBwYWdlIHVzYWdlLiBJIGRvbid0IHRo aW5rIHRoYXQgcHJvYmxlbSBiZWNvbWVzIGVhc2llcgo+ID4gPiBpZiB3ZSB1c2UgY2dyb3VwcyBv ciBhbnkgb3RoZXIgQVBJLiBJIHdhbnRlZCB0byBlbmFibGUgZXhpc3RpbmcgUFNTCj4gPiA+IGNh bGN1bGF0aW9uIG1lY2hhbmlzbXMgZm9yIHRoZSBkbWFidWZzIGtub3duIHRvIGJlIGJhY2tlZCBi eSBzdHJ1Y3QKPiA+ID4gcGFnZXMgKHNpbmNlIHdlIGtub3cgaG93IHRoZSBoZWFwIGFsbG9jYXRl ZCB0aGF0IG1lbW9yeSksIGJ1dCBzb3VuZHMKPiA+ID4gbGlrZSB0aGlzIHdvdWxkIGxlYWQgdG8g cHJvYmxlbXMgdGhhdCBJIGRpZCBub3QgY29uc2lkZXIuCj4gPgo+ID4gWWVhaCwgdXNpbmcgc3Ry dWN0IHBhZ2UgaW5kZWVkIHdvbid0IHdvcmsuIFdlIGRpc2N1c3NlZCB0aGF0IG11bHRpcGxlCj4g PiB0aW1lcyBub3cgYW5kIERhbmllbCBldmVuIGhhcyBhIHBhdGNoIHRvIG1hbmdsZSB0aGUgc3Ry dWN0IHBhZ2UgcG9pbnRlcnMKPiA+IGluc2lkZSB0aGUgc2dfdGFibGUgb2JqZWN0IHRvIHByZXZl bnQgYWJ1c2UgaW4gdGhhdCBkaXJlY3Rpb24uCj4gPgo+ID4gT24gdGhlIG90aGVyIGhhbmQgSSB0 b3RhbGx5IGFncmVlIHRoYXQgd2UgbmVlZCB0byBkbyBzb21ldGhpbmcgb24gdGhpcwo+ID4gc2lk ZSB3aGljaCBnb2VzIGJleW9uZyB3aGF0IGNncm91cHMgcHJvdmlkZS4KPiA+Cj4gPiBBIGZldyB5 ZWFycyBhZ28gSSBjYW1lIHVwIHdpdGggcGF0Y2hlcyB0byBpbXByb3ZlIHRoZSBPT00ga2lsbGVy IHRvCj4gPiBpbmNsdWRlIHJlc291cmNlcyBib3VuZCB0byB0aGUgcHJvY2Vzc2VzIHRocm91Z2gg ZmlsZSBkZXNjcmlwdG9ycy4gSQo+ID4gdW5mb3J0dW5hdGVseSBjYW4ndCBmaW5kIHRoZW0gb2Yg aGFuZCBhbnkgbW9yZSBhbmQgSSdtIGN1cnJlbnRseSB0byBidXN5Cj4gPiB0byBkaWcgdGhlbSB1 cC4KPgo+IGh0dHBzOi8vbGlzdHMuZnJlZWRlc2t0b3Aub3JnL2FyY2hpdmVzL2RyaS1kZXZlbC8y MDE1LVNlcHRlbWJlci8wODk3NzguaHRtbAo+IEkgdGhpbmsgdGhlcmUgd2FzIGEgbW9yZSByZWNl bnQgZGlzY3Vzc2lvbiwgYnV0IEkgY2FuJ3Qgc2VlbSB0byBmaW5kIGl0LgoKVGhhbmtzIGZvciB0 aGUgcG9pbnRlciEKQXBwcmVjaWF0ZSB0aGUgdGltZSBldmVyeW9uZSB0b29rIHRvIGV4cGxhaW4g dGhlIGlzc3Vlcy4KVGhhbmtzLApTdXJlbi4KCj4KPiBBbGV4Cj4KPiA+Cj4gPiBJbiBnZW5lcmFs IEkgdGhpbmsgd2UgbmVlZCB0byBtYWtlIGl0IHBvc3NpYmxlIHRoYXQgYm90aCB0aGUgaW4ga2Vy bmVsCj4gPiBPT00ga2lsbGVyIGFzIHdlbGwgYXMgdXNlcnNwYWNlIHByb2Nlc3NlcyBhbmQgaGFu ZGxlcnMgaGF2ZSBhY2Nlc3MgdG8KPiA+IHRoYXQga2luZCBvZiBkYXRhLgo+ID4KPiA+IFRoZSBm ZGluZm8gYXBwcm9hY2ggYXMgc3VnZ2VzdGVkIGluIHRoZSBvdGhlciB0aHJlYWQgc291bmRzIGxp a2UgdGhlCj4gPiBlYXNpZXN0IHNvbHV0aW9uIHRvIG1lLgo+ID4KPiA+IFJlZ2FyZHMsCj4gPiBD aHJpc3RpYW4uCj4gPgo+ID4gPiBUaGFua3MsCj4gPiA+IFN1cmVuLgo+ID4gPgo+ID4gPgo+ID4K PiA+IF9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCj4gPiBk cmktZGV2ZWwgbWFpbGluZyBsaXN0Cj4gPiBkcmktZGV2ZWxAbGlzdHMuZnJlZWRlc2t0b3Aub3Jn Cj4gPiBodHRwczovL2xpc3RzLmZyZWVkZXNrdG9wLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2RyaS1k ZXZlbApfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpkcmkt ZGV2ZWwgbWFpbGluZyBsaXN0CmRyaS1kZXZlbEBsaXN0cy5mcmVlZGVza3RvcC5vcmcKaHR0cHM6 Ly9saXN0cy5mcmVlZGVza3RvcC5vcmcvbWFpbG1hbi9saXN0aW5mby9kcmktZGV2ZWwK