From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Jan Beulich" <JBeulich@suse.com>
Subject: Re: [PATCH 5/5] mm: Don't hold heap lock in
 alloc_heap_pages() longer than necessary
Date: Wed, 30 Aug 2017 04:22:41 -0600
Message-ID: <59A6AE11020000780017576B@prv-mh.provo.novell.com>
References: <1504026557-11365-1-git-send-email-boris.ostrovsky@oracle.com>
 <1504026557-11365-6-git-send-email-boris.ostrovsky@oracle.com>
 <c13c6e40-5331-89a1-c9f4-d60bfc780c7d@citrix.com>
Mime-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: base64
Return-path: <xen-devel-bounces@lists.xen.org>
In-Reply-To: <c13c6e40-5331-89a1-c9f4-d60bfc780c7d@citrix.com>
Content-Disposition: inline
List-Unsubscribe: <https://lists.xen.org/cgi-bin/mailman/options/xen-devel>,
 <mailto:xen-devel-request@lists.xen.org?subject=unsubscribe>
List-Post: <mailto:xen-devel@lists.xen.org>
List-Help: <mailto:xen-devel-request@lists.xen.org?subject=help>
List-Subscribe: <https://lists.xen.org/cgi-bin/mailman/listinfo/xen-devel>,
 <mailto:xen-devel-request@lists.xen.org?subject=subscribe>
Errors-To: xen-devel-bounces@lists.xen.org
Sender: "Xen-devel" <xen-devel-bounces@lists.xen.org>
To: Andrew Cooper <andrew.cooper3@citrix.com>, Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: sstabellini@kernel.org, wei.liu2@citrix.com, George.Dunlap@eu.citrix.com, tim@xen.org, ian.jackson@eu.citrix.com, xen-devel@lists.xen.org
List-Id: xen-devel@lists.xenproject.org
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