linux-kernel - Re: linux-next: build failure after merge of the v9fs tree

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Message-ID: <4D635618.3@linux.vnet.ibm.com>
Date:	Mon, 21 Feb 2011 22:22:16 -0800
From:	"Venkateswararao Jujjuri (JV)" <jvrao@...ux.vnet.ibm.com>
To:	Stephen Rothwell <sfr@...b.auug.org.au>
CC:	Eric Van Hensbergen <ericvh@...il.com>, linux-next@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: linux-next: build failure after merge of the v9fs tree

On 2/21/2011 9:30 PM, Stephen Rothwell wrote:
> Hi,
> 
> On Mon, 21 Feb 2011 21:20:31 -0800 "Venkateswararao Jujjuri (JV)" <jvrao@...ux.vnet.ibm.com> wrote:
>>
>> On 2/21/2011 4:53 PM, Stephen Rothwell wrote:
>>>
>>> After merging the v9fs tree, today's linux-next build (x86_64
>>> allmodconfig) failed like this:
>>>
>>> ERROR: "p9_payload_gup" [net/9p/9pnet_virtio.ko] undefined!
>>> ERROR: "p9_nr_pages" [net/9p/9pnet_virtio.ko] undefined!
>>> ERROR: "p9_release_req_pages" [net/9p/9pnet_virtio.ko] undefined!
>>
>> These functions are defined by commit 249951bf66816128a7698caa826425e299494c82
>> ([net/9p] Preparation and helper functions for zero copy)
> 
> Yes, they are - but they are not exported to modules.

Thanks; Can you please check if this patch fixes your issue?

diff --git a/net/9p/trans_common.c b/net/9p/trans_common.c
index ca705f1..da7c2cd 100644
--- a/net/9p/trans_common.c
+++ b/net/9p/trans_common.c
@@ -13,6 +13,7 @@
  */

 #include <linux/slab.h>
+ #include <linux/module.h>
 #include <net/9p/9p.h>
 #include <net/9p/client.h>
 #include <linux/scatterlist.h>
@@ -32,6 +33,7 @@ p9_release_req_pages(struct trans_rpage_info *rpinfo)
                i++;
        }
 }
+EXPORT_SYMBOL(p9_release_req_pages);

 /**
  * p9_nr_pages - Return number of pages needed to accomodate the payload.
@@ -45,6 +47,7 @@ p9_nr_pages(struct p9_req_t *req)
                        PAGE_SIZE - 1) >> PAGE_SHIFT;
        return end_page - start_page;
 }
+EXPORT_SYMBOL(p9_nr_pages);

 /**
  * payload_gup - Translates user buffer into kernel pages and
@@ -91,3 +94,4 @@ p9_payload_gup(struct p9_req_t *req, size_t *pdata_off, int *p
        }
        return 0;
 }
+EXPORT_SYMBOL(p9_payload_gup);



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