From mboxrd@z Thu Jan 1 00:00:00 1970 From: Daniel Vetter Subject: Re: [PATCH 10/14] vgem: separate errno from VM_FAULT_* values Date: Wed, 16 May 2018 11:53:03 +0200 Message-ID: <20180516095303.GH3438@phenom.ffwll.local> References: <20180516054348.15950-1-hch@lst.de> <20180516054348.15950-11-hch@lst.de> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Content-Disposition: inline In-Reply-To: <20180516054348.15950-11-hch@lst.de> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: Christoph Hellwig Cc: linux-arm-kernel@lists.infradead.org, linux-s390@vger.kernel.org, linux-btrfs@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, Matthew Wilcox , linux-mm@kvack.org, ocfs2-devel@oss.oracle.com, Souptick Joarder , linux-fsdevel@vger.kernel.org, linux-mtd@lists.infradead.org, ceph-devel@vger.kernel.org, linux-ext4@vger.kernel.org, devel@lists.orangefs.org, lustre-devel@lists.lustre.org List-Id: ceph-devel.vger.kernel.org T24gV2VkLCBNYXkgMTYsIDIwMTggYXQgMDc6NDM6NDRBTSArMDIwMCwgQ2hyaXN0b3BoIEhlbGx3 aWcgd3JvdGU6Cj4gQW5kIHN0cmVhbWxpbmUgdGhlIGNvZGUgaW4gdmdlbV9mYXVsdCB3aXRoIGVh cmx5IHJldHVybnMgc28gdGhhdCBpdCBpcwo+IGEgbGl0dGxlIGJpdCBtb3JlIHJlYWRhYmxlLgo+ IAo+IFNpZ25lZC1vZmYtYnk6IENocmlzdG9waCBIZWxsd2lnIDxoY2hAbHN0LmRlPgo+IC0tLQo+ ICBkcml2ZXJzL2dwdS9kcm0vdmdlbS92Z2VtX2Rydi5jIHwgNTEgKysrKysrKysrKysrKysrLS0t LS0tLS0tLS0tLS0tLS0tCj4gIDEgZmlsZSBjaGFuZ2VkLCAyMyBpbnNlcnRpb25zKCspLCAyOCBk ZWxldGlvbnMoLSkKPiAKPiBkaWZmIC0tZ2l0IGEvZHJpdmVycy9ncHUvZHJtL3ZnZW0vdmdlbV9k cnYuYyBiL2RyaXZlcnMvZ3B1L2RybS92Z2VtL3ZnZW1fZHJ2LmMKPiBpbmRleCAyNTI0ZmYxMTZm MDAuLmEyNjFlMGFhYjgzYSAxMDA2NDQKPiAtLS0gYS9kcml2ZXJzL2dwdS9kcm0vdmdlbS92Z2Vt X2Rydi5jCj4gKysrIGIvZHJpdmVycy9ncHUvZHJtL3ZnZW0vdmdlbV9kcnYuYwo+IEBAIC02MSwx MiArNjEsMTMgQEAgc3RhdGljIHZvaWQgdmdlbV9nZW1fZnJlZV9vYmplY3Qoc3RydWN0IGRybV9n ZW1fb2JqZWN0ICpvYmopCj4gIAlrZnJlZSh2Z2VtX29iaik7Cj4gIH0KPiAgCj4gLXN0YXRpYyBp bnQgdmdlbV9nZW1fZmF1bHQoc3RydWN0IHZtX2ZhdWx0ICp2bWYpCj4gK3N0YXRpYyB2bV9mYXVs dF90IHZnZW1fZ2VtX2ZhdWx0KHN0cnVjdCB2bV9mYXVsdCAqdm1mKQo+ICB7Cj4gIAlzdHJ1Y3Qg dm1fYXJlYV9zdHJ1Y3QgKnZtYSA9IHZtZi0+dm1hOwo+ICAJc3RydWN0IGRybV92Z2VtX2dlbV9v YmplY3QgKm9iaiA9IHZtYS0+dm1fcHJpdmF0ZV9kYXRhOwo+ICAJLyogV2UgZG9uJ3QgdXNlIHZt Zi0+cGdvZmYgc2luY2UgdGhhdCBoYXMgdGhlIGZha2Ugb2Zmc2V0ICovCj4gIAl1bnNpZ25lZCBs b25nIHZhZGRyID0gdm1mLT5hZGRyZXNzOwo+ICsJc3RydWN0IHBhZ2UgKnBhZ2U7Cj4gIAlpbnQg cmV0Owo+ICAJbG9mZl90IG51bV9wYWdlczsKPiAgCXBnb2ZmX3QgcGFnZV9vZmZzZXQ7Cj4gQEAg LTg1LDM1ICs4NiwyOSBAQCBzdGF0aWMgaW50IHZnZW1fZ2VtX2ZhdWx0KHN0cnVjdCB2bV9mYXVs dCAqdm1mKQo+ICAJCXJldCA9IDA7Cj4gIAl9Cj4gIAltdXRleF91bmxvY2soJm9iai0+cGFnZXNf bG9jayk7Cj4gLQlpZiAocmV0KSB7Cj4gLQkJc3RydWN0IHBhZ2UgKnBhZ2U7Cj4gLQo+IC0JCXBh Z2UgPSBzaG1lbV9yZWFkX21hcHBpbmdfcGFnZSgKPiAtCQkJCQlmaWxlX2lub2RlKG9iai0+YmFz ZS5maWxwKS0+aV9tYXBwaW5nLAo+IC0JCQkJCXBhZ2Vfb2Zmc2V0KTsKPiAtCQlpZiAoIUlTX0VS UihwYWdlKSkgewo+IC0JCQl2bWYtPnBhZ2UgPSBwYWdlOwo+IC0JCQlyZXQgPSAwOwo+IC0JCX0g ZWxzZSBzd2l0Y2ggKFBUUl9FUlIocGFnZSkpIHsKPiAtCQkJY2FzZSAtRU5PU1BDOgo+IC0JCQlj YXNlIC1FTk9NRU06Cj4gLQkJCQlyZXQgPSBWTV9GQVVMVF9PT007Cj4gLQkJCQlicmVhazsKPiAt CQkJY2FzZSAtRUJVU1k6Cj4gLQkJCQlyZXQgPSBWTV9GQVVMVF9SRVRSWTsKPiAtCQkJCWJyZWFr Owo+IC0JCQljYXNlIC1FRkFVTFQ6Cj4gLQkJCWNhc2UgLUVJTlZBTDoKPiAtCQkJCXJldCA9IFZN X0ZBVUxUX1NJR0JVUzsKPiAtCQkJCWJyZWFrOwo+IC0JCQlkZWZhdWx0Ogo+IC0JCQkJV0FSTl9P TihQVFJfRVJSKHBhZ2UpKTsKPiAtCQkJCXJldCA9IFZNX0ZBVUxUX1NJR0JVUzsKPiAtCQkJCWJy ZWFrOwo+IC0JCX0KPiArCWlmICghcmV0KQo+ICsJCXJldHVybiAwOwo+ICsKPiArCXBhZ2UgPSBz aG1lbV9yZWFkX21hcHBpbmdfcGFnZShmaWxlX2lub2RlKG9iai0+YmFzZS5maWxwKS0+aV9tYXBw aW5nLAo+ICsJCQlwYWdlX29mZnNldCk7Cj4gKwlpZiAoIUlTX0VSUihwYWdlKSkgewo+ICsJCXZt Zi0+cGFnZSA9IHBhZ2U7Cj4gKwkJcmV0dXJuIDA7Cj4gKwl9Cj4gIAo+ICsJc3dpdGNoIChQVFJf RVJSKHBhZ2UpKSB7Cj4gKwljYXNlIC1FTk9TUEM6Cj4gKwljYXNlIC1FTk9NRU06Cj4gKwkJcmV0 dXJuIFZNX0ZBVUxUX09PTTsKPiArCWNhc2UgLUVCVVNZOgo+ICsJCXJldHVybiBWTV9GQVVMVF9S RVRSWTsKPiArCWNhc2UgLUVGQVVMVDoKPiArCWNhc2UgLUVJTlZBTDoKPiArCQlyZXR1cm4gVk1f RkFVTFRfU0lHQlVTOwo+ICsJZGVmYXVsdDoKPiArCQlXQVJOX09OKFBUUl9FUlIocGFnZSkpOwo+ ICsJCXJldHVybiBWTV9GQVVMVF9TSUdCVVM7Cj4gIAl9Cj4gLQlyZXR1cm4gcmV0OwoKUmV2aWV3 ZWQtYnk6IERhbmllbCBWZXR0ZXIgPGRhbmllbC52ZXR0ZXJAZmZ3bGwuY2g+CgpXYW50IG1lIHRv IG1lcmdlIHRoaXMgdGhyb3VnaCBkcm0tbWlzYyBvciBwbGFuIHRvIHBpY2sgaXQgdXAgeW91cnNl bGY/Ci1EYW5pZWwKCj4gIH0KPiAgCj4gIHN0YXRpYyBjb25zdCBzdHJ1Y3Qgdm1fb3BlcmF0aW9u c19zdHJ1Y3QgdmdlbV9nZW1fdm1fb3BzID0gewo+IC0tIAo+IDIuMTcuMAo+IAoKLS0gCkRhbmll bCBWZXR0ZXIKU29mdHdhcmUgRW5naW5lZXIsIEludGVsIENvcnBvcmF0aW9uCmh0dHA6Ly9ibG9n LmZmd2xsLmNoCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f CmRyaS1kZXZlbCBtYWlsaW5nIGxpc3QKZHJpLWRldmVsQGxpc3RzLmZyZWVkZXNrdG9wLm9yZwpo dHRwczovL2xpc3RzLmZyZWVkZXNrdG9wLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2RyaS1kZXZlbAo=