linux-kernel - [PATCH 2.6.22-rc6-mm1] compile error when CONFIG_DM

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Date:	Thu, 28 Jun 2007 09:49:17 -0500
From:	Dave Kleikamp <shaggy@...ux.vnet.ibm.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	linux-kernel@...r.kernel.org, Mike Anderson <andmike@...ibm.com>,
	Alasdair G Kergon <agk@...hat.com>
Subject: [PATCH 2.6.22-rc6-mm1] compile error when CONFIG_DM_NETLINK is not
	defined

On Thu, 2007-06-28 at 03:43 -0700, Andrew Morton wrote:
> -agk-dm-dm-use-singlethread-workqueues.patch
> +agk-dm-dm-use-singlethread-workqueues.patch
> +agk-dm-dm-snapshot-fix-invalidation-deadlock.patch
> +agk-dm-dm-snapshot-permit-invalid-activation.patch
> +agk-dm-dm-raid1-clear-region-outside-spinlock.patch
> +agk-dm-dm-netlink.patch
> +agk-dm-dm-netlink-add-to-core.patch
> +agk-dm-dm-netlink-mpath.patch
> +agk-dm-dm-mpath-rdac.patch
> 
>  device mapper tree updates 

I got this compile error:

  LD      drivers/md/built-in.o
drivers/md/dm-multipath.o: In function `dm_path_event':
drivers/md/dm-netlink.h:56: multiple definition of `dm_path_event'
drivers/md/dm-mod.o:drivers/md/dm-netlink.h:56: first defined here
drivers/md/dm-multipath.o: In function `dm_netlink_send_events':
drivers/md/dm-netlink.h:51: multiple definition of `dm_netlink_send_events'
drivers/md/dm-mod.o:drivers/md/dm-netlink.h:51: first defined here
make[2]: *** [drivers/md/built-in.o] Error 1

I was able to fix it by making the dummy inline functions static.

Signed-off-by: Dave Kleikamp <shaggy@...ux.vnet.ibm.com>

diff -Nurp linux-2.6.22-rc6-mm1/drivers/md/dm-netlink.h linux/drivers/md/dm-netlink.h
--- linux-2.6.22-rc6-mm1/drivers/md/dm-netlink.h	2007-06-28 05:50:38.000000000 -0500
+++ linux/drivers/md/dm-netlink.h	2007-06-28 09:10:15.000000000 -0500
@@ -47,10 +47,10 @@ static inline int __init dm_netlink_init
 static inline void dm_netlink_exit(void)
 {
 }
-void inline dm_netlink_send_events(struct list_head *events)
+static void inline dm_netlink_send_events(struct list_head *events)
 {
 }
-void inline dm_path_event(enum dm_netlink_event_type evt_type,
+static void inline dm_path_event(enum dm_netlink_event_type evt_type,
 			  struct dm_table *t, const char *path,
 			  int nr_valid_paths)
 {

-- 
David Kleikamp
IBM Linux Technology Center

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