From mboxrd@z Thu Jan 1 00:00:00 1970 From: Wei Wang Subject: Re: [virtio-dev] Re: [PATCH v12 7/8] mm: export symbol of next_zone and first_online_pgdat Date: Thu, 13 Jul 2017 16:41:54 +0800 Message-ID: <59673252.7090203@intel.com> References: <1499863221-16206-1-git-send-email-wei.w.wang@intel.com> <1499863221-16206-8-git-send-email-wei.w.wang@intel.com> <20170713031526-mutt-send-email-mst@kernel.org> Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit Cc: linux-kernel@vger.kernel.org, qemu-devel@nongnu.org, virtualization@lists.linux-foundation.org, kvm@vger.kernel.org, linux-mm@kvack.org, david@redhat.com, cornelia.huck@de.ibm.com, akpm@linux-foundation.org, mgorman@techsingularity.net, aarcange@redhat.com, amit.shah@redhat.com, pbonzini@redhat.com, liliang.opensource@gmail.com, virtio-dev@lists.oasis-open.org, yang.zhang.wz@gmail.com, quan.xu@aliyun.com To: "Michael S. Tsirkin" Return-path: In-Reply-To: <20170713031526-mutt-send-email-mst@kernel.org> Sender: owner-linux-mm@kvack.org List-Id: kvm.vger.kernel.org On 07/13/2017 08:16 AM, Michael S. Tsirkin wrote: > On Wed, Jul 12, 2017 at 08:40:20PM +0800, Wei Wang wrote: >> This patch enables for_each_zone()/for_each_populated_zone() to be >> invoked by a kernel module. > ... for use by virtio balloon. With this patch, other kernel modules can also use the for_each_zone(). Would it be better to claim it broader? > >> Signed-off-by: Wei Wang > balloon seems to only use > + for_each_populated_zone(zone) > + for_each_migratetype_order(order, type) > Yes. using for_each_populated_zone() requires the following export. Best, Wei >> --- >> mm/mmzone.c | 2 ++ >> 1 file changed, 2 insertions(+) >> >> diff --git a/mm/mmzone.c b/mm/mmzone.c >> index a51c0a6..08a2a3a 100644 >> --- a/mm/mmzone.c >> +++ b/mm/mmzone.c >> @@ -13,6 +13,7 @@ struct pglist_data *first_online_pgdat(void) >> { >> return NODE_DATA(first_online_node); >> } >> +EXPORT_SYMBOL_GPL(first_online_pgdat); >> >> struct pglist_data *next_online_pgdat(struct pglist_data *pgdat) >> { >> @@ -41,6 +42,7 @@ struct zone *next_zone(struct zone *zone) >> } >> return zone; >> } >> +EXPORT_SYMBOL_GPL(next_zone); >> >> static inline int zref_in_nodemask(struct zoneref *zref, nodemask_t *nodes) >> { >> -- >> 2.7.4 > --------------------------------------------------------------------- > To unsubscribe, e-mail: virtio-dev-unsubscribe@lists.oasis-open.org > For additional commands, e-mail: virtio-dev-help@lists.oasis-open.org > -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org