From mboxrd@z Thu Jan 1 00:00:00 1970 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Subject: dmaengine: avoid map_cnt overflow with CONFIG_DMA_ENGINE_RAID From: Vinod Koul Message-Id: <20180112165648.GP18649@localhost> Date: Fri, 12 Jan 2018 22:26:48 +0530 To: Zi Yan , Dan Williams Cc: dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org, Zi Yan List-ID: T24gTW9uLCBKYW4gMDgsIDIwMTggYXQgMTA6NTA6NTBBTSAtMDUwMCwgWmkgWWFuIHdyb3RlOgo+ IEZyb206IFppIFlhbiA8emkueWFuQGNzLnJ1dGdlcnMuZWR1Pgo+IAo+IFdoZW4gQ09ORklHX0RN QV9FTkdJTkVfUkFJRCBpcyBlbmFibGVkLCB1bm1hcCBwb29sIHNpemUgY2FuIHJlYWNoIHRvCj4g MjU2LiBCdXQgaW4gc3RydWN0IGRtYWVuZ2luZV91bm1hcF9kYXRhLCBtYXBfY250IGlzIG9ubHkg dTgsIHdyYXBwaW5nCj4gdG8gMCwgaWYgdGhlIHVubWFwIHBvb2wgaXMgbWF4aW1hbGx5IHVzZWQu IFRoaXMgdHJpZ2dlcnMgQlVHKCkgd2hlbgo+IHN0cnVjdCBkbWFlbmdpbmVfdW5tYXBfZGF0YSBp cyBmcmVlZC4gVXNlIHUxNiB0byBmaXggdGhlIHByb2JsZW0uCj4gCj4gU2lnbmVkLW9mZi1ieTog WmkgWWFuIDx6aS55YW5AY3MucnV0Z2Vycy5lZHU+Cj4gLS0tCj4gIGluY2x1ZGUvbGludXgvZG1h ZW5naW5lLmggfCA0ICsrKysKPiAgMSBmaWxlIGNoYW5nZWQsIDQgaW5zZXJ0aW9ucygrKQo+IAo+ IGRpZmYgLS1naXQgYS9pbmNsdWRlL2xpbnV4L2RtYWVuZ2luZS5oIGIvaW5jbHVkZS9saW51eC9k bWFlbmdpbmUuaAo+IGluZGV4IGY4Mzg3NjQ5OTNlYi4uODYxYmU1Y2FiMWRmIDEwMDY0NAo+IC0t LSBhL2luY2x1ZGUvbGludXgvZG1hZW5naW5lLmgKPiArKysgYi9pbmNsdWRlL2xpbnV4L2RtYWVu Z2luZS5oCj4gQEAgLTQ3MCw3ICs0NzAsMTEgQEAgdHlwZWRlZiB2b2lkICgqZG1hX2FzeW5jX3R4 X2NhbGxiYWNrX3Jlc3VsdCkodm9pZCAqZG1hX2FzeW5jX3BhcmFtLAo+ICAJCQkJY29uc3Qgc3Ry dWN0IGRtYWVuZ2luZV9yZXN1bHQgKnJlc3VsdCk7Cj4gIAo+ICBzdHJ1Y3QgZG1hZW5naW5lX3Vu bWFwX2RhdGEgewo+ICsjaWYgSVNfRU5BQkxFRChDT05GSUdfRE1BX0VOR0lORV9SQUlEKQo+ICsJ dTE2IG1hcF9jbnQ7Cj4gKyNlbHNlCj4gIAl1OCBtYXBfY250Owo+ICsjZW5kaWYKPiAgCXU4IHRv X2NudDsKPiAgCXU4IGZyb21fY250Owo+ICAJdTggYmlkaV9jbnQ7CgpXb3VsZCB0aGF0IGNhdXNl IGFkdmVyc2UgcGVyZm9ybWFuY2UsIHRoZSBkYXRhIHN0cnVjdHVyZSBpcyBub3QgYWxpZ25lZAph bnltb3JlLiBEYW4gd2FzIHRoYXQgYSBjb25zaWRlcmF0aW9uIHdoaWxlIGFkZGluZyB0aGlzPwo=