From: John Hubbard Subject: [PATCH v6 03/24] mm/gup: move try_get_compound_head() to top, fix minor issues Date: Tue, 19 Nov 2019 00:16:22 -0800 Message-ID: <20191119081643.1866232-4-jhubbard@nvidia.com> References: <20191119081643.1866232-1-jhubbard@nvidia.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from hqemgate15.nvidia.com (hqemgate15.nvidia.com [216.228.121.64]) by gabe.freedesktop.org (Postfix) with ESMTPS id 4742F6EC80 for ; Tue, 19 Nov 2019 08:16:51 +0000 (UTC) In-Reply-To: <20191119081643.1866232-1-jhubbard@nvidia.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: Andrew Morton Cc: Michal Hocko , Jan Kara , kvm@vger.kernel.org, linux-doc@vger.kernel.org, David Airlie , Dave Chinner , dri-devel@lists.freedesktop.org, LKML , linux-mm@kvack.org, Paul Mackerras , linux-kselftest@vger.kernel.org, Ira Weiny , Jonathan Corbet , linux-rdma@vger.kernel.org, Michael Ellerman , Christoph Hellwig , Jason Gunthorpe , Vlastimil Babka , =?UTF-8?q?Bj=C3=B6rn=20T=C3=B6pel?= , linux-media@vger.kernel.org, Shuah Khan , John Hubbard , linux-block@vger.kernel.org, =?UTF-8?q?J=C3=A9r=C3=B4me=20Glisse?= , Al Viro , Dan Williams List-Id: dri-devel@lists.freedesktop.org QW4gdXBjb21pbmcgcGF0Y2ggdXNlcyB0cnlfZ2V0X2NvbXBvdW5kX2hlYWQoKSBtb3JlIHdpZGVs eSwKc28gbW92ZSBpdCB0byB0aGUgdG9wIG9mIGd1cC5jLgoKQWxzbyBmaXggYSB0aW55IHNwZWxs aW5nIGVycm9yIGFuZCBhIGNoZWNrcGF0Y2gucGwgd2FybmluZy4KClJldmlld2VkLWJ5OiBKYW4g S2FyYSA8amFja0BzdXNlLmN6PgpSZXZpZXdlZC1ieTogSXJhIFdlaW55IDxpcmEud2VpbnlAaW50 ZWwuY29tPgpTaWduZWQtb2ZmLWJ5OiBKb2huIEh1YmJhcmQgPGpodWJiYXJkQG52aWRpYS5jb20+ Ci0tLQogbW0vZ3VwLmMgfCAyOSArKysrKysrKysrKysrKystLS0tLS0tLS0tLS0tLQogMSBmaWxl IGNoYW5nZWQsIDE1IGluc2VydGlvbnMoKyksIDE0IGRlbGV0aW9ucygtKQoKZGlmZiAtLWdpdCBh L21tL2d1cC5jIGIvbW0vZ3VwLmMKaW5kZXggZjNjN2Q2NjI1ODE3Li4xNGZjZGM1MDIxNjYgMTAw NjQ0Ci0tLSBhL21tL2d1cC5jCisrKyBiL21tL2d1cC5jCkBAIC0yOSw2ICsyOSwyMSBAQCBzdHJ1 Y3QgZm9sbG93X3BhZ2VfY29udGV4dCB7CiAJdW5zaWduZWQgaW50IHBhZ2VfbWFzazsKIH07CiAK Ky8qCisgKiBSZXR1cm4gdGhlIGNvbXBvdW5kIGhlYWQgcGFnZSB3aXRoIHJlZiBhcHByb3ByaWF0 ZWx5IGluY3JlbWVudGVkLAorICogb3IgTlVMTCBpZiB0aGF0IGZhaWxlZC4KKyAqLworc3RhdGlj IGlubGluZSBzdHJ1Y3QgcGFnZSAqdHJ5X2dldF9jb21wb3VuZF9oZWFkKHN0cnVjdCBwYWdlICpw YWdlLCBpbnQgcmVmcykKK3sKKwlzdHJ1Y3QgcGFnZSAqaGVhZCA9IGNvbXBvdW5kX2hlYWQocGFn ZSk7CisKKwlpZiAoV0FSTl9PTl9PTkNFKHBhZ2VfcmVmX2NvdW50KGhlYWQpIDwgMCkpCisJCXJl dHVybiBOVUxMOworCWlmICh1bmxpa2VseSghcGFnZV9jYWNoZV9hZGRfc3BlY3VsYXRpdmUoaGVh ZCwgcmVmcykpKQorCQlyZXR1cm4gTlVMTDsKKwlyZXR1cm4gaGVhZDsKK30KKwogLyoqCiAgKiBw dXRfdXNlcl9wYWdlc19kaXJ0eV9sb2NrKCkgLSByZWxlYXNlIGFuZCBvcHRpb25hbGx5IGRpcnR5 IGd1cC1waW5uZWQgcGFnZXMKICAqIEBwYWdlczogIGFycmF5IG9mIHBhZ2VzIHRvIGJlIG1heWJl IG1hcmtlZCBkaXJ0eSwgYW5kIGRlZmluaXRlbHkgcmVsZWFzZWQuCkBAIC0xNzkzLDIwICsxODA4 LDYgQEAgc3RhdGljIHZvaWQgX19tYXliZV91bnVzZWQgdW5kb19kZXZfcGFnZW1hcChpbnQgKm5y LCBpbnQgbnJfc3RhcnQsCiAJfQogfQogCi0vKgotICogUmV0dXJuIHRoZSBjb21wdW5kIGhlYWQg cGFnZSB3aXRoIHJlZiBhcHByb3ByaWF0ZWx5IGluY3JlbWVudGVkLAotICogb3IgTlVMTCBpZiB0 aGF0IGZhaWxlZC4KLSAqLwotc3RhdGljIGlubGluZSBzdHJ1Y3QgcGFnZSAqdHJ5X2dldF9jb21w b3VuZF9oZWFkKHN0cnVjdCBwYWdlICpwYWdlLCBpbnQgcmVmcykKLXsKLQlzdHJ1Y3QgcGFnZSAq aGVhZCA9IGNvbXBvdW5kX2hlYWQocGFnZSk7Ci0JaWYgKFdBUk5fT05fT05DRShwYWdlX3JlZl9j b3VudChoZWFkKSA8IDApKQotCQlyZXR1cm4gTlVMTDsKLQlpZiAodW5saWtlbHkoIXBhZ2VfY2Fj aGVfYWRkX3NwZWN1bGF0aXZlKGhlYWQsIHJlZnMpKSkKLQkJcmV0dXJuIE5VTEw7Ci0JcmV0dXJu IGhlYWQ7Ci19Ci0KICNpZmRlZiBDT05GSUdfQVJDSF9IQVNfUFRFX1NQRUNJQUwKIHN0YXRpYyBp bnQgZ3VwX3B0ZV9yYW5nZShwbWRfdCBwbWQsIHVuc2lnbmVkIGxvbmcgYWRkciwgdW5zaWduZWQg bG9uZyBlbmQsCiAJCQkgdW5zaWduZWQgaW50IGZsYWdzLCBzdHJ1Y3QgcGFnZSAqKnBhZ2VzLCBp bnQgKm5yKQotLSAKMi4yNC4wCgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fXwpkcmktZGV2ZWwgbWFpbGluZyBsaXN0CmRyaS1kZXZlbEBsaXN0cy5mcmVlZGVz a3RvcC5vcmcKaHR0cHM6Ly9saXN0cy5mcmVlZGVza3RvcC5vcmcvbWFpbG1hbi9saXN0aW5mby9k cmktZGV2ZWw=