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From: Stephen Rothwell <sfr@canb.auug.org.au>
To: Matthew Wilcox <matthew.r.wilcox@intel.com>
Cc: linux-next@vger.kernel.org, linux-kernel@vger.kernel.org,
	Linus Torvalds <torvalds@linux-foundation.org>,
	Jens Axboe <axboe@kernel.dk>,
	Rusty Russell <rusty@rustcorp.com.au>
Subject: linux-next: build failure after merge of the origin tree
Date: Thu, 19 Jan 2012 10:31:36 +1100	[thread overview]
Message-ID: <20120119103136.e92b828eca9f2e903da0ea29@canb.auug.org.au> (raw)

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Hi Linus,

After merging the origin tree, today's linux-next build (x86_64
allmodconfig) failed like this:

ERROR: "xen_biovec_phys_mergeable" [drivers/block/nvme.ko] undefined!

This is weird, as CONFIG_BLOCK and CONFIG_XEN are both set in this build
and I started with an empty object directory.  And biomerge.o has been
built.

Ah ha!

drivers/xen/biomerge.c:14:1: warning: data definition has no type or storage class [enabled by default]
drivers/xen/biomerge.c:14:1: warning: type defaults to 'int' in declaration of 'EXPORT_SYMBOL' [-Wimplicit-int]
drivers/xen/biomerge.c:14:1: warning: parameter names (without types) in function declaration [enabled by default]

drivers/xen/biomerge.c does not include export.h.  It would be nice if
this produced an error, not just the warnings above.  Caused by commit
0b934ccd707f ("Xen: Export xen_biovec_phys_mergeable") (which was never
in linux-next :-().

I applied the following patch for today:

From: Stephen Rothwell <sfr@canb.auug.org.au>
Date: Thu, 19 Jan 2012 10:24:31 +1100
Subject: [PATCH] xen: using EXPORT_SYMBOL requires including export.h

Fixes these warnings:

drivers/xen/biomerge.c:14:1: warning: data definition has no type or storage class [enabled by default]
drivers/xen/biomerge.c:14:1: warning: type defaults to 'int' in declaration of 'EXPORT_SYMBOL' [-Wimplicit-int]
drivers/xen/biomerge.c:14:1: warning: parameter names (without types) in function declaration [enabled by default]

And this build error:

ERROR: "xen_biovec_phys_mergeable" [drivers/block/nvme.ko] undefined!

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
---
 drivers/xen/biomerge.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/drivers/xen/biomerge.c b/drivers/xen/biomerge.c
index 18c1bb6..0edb91c 100644
--- a/drivers/xen/biomerge.c
+++ b/drivers/xen/biomerge.c
@@ -1,5 +1,6 @@
 #include <linux/bio.h>
 #include <linux/io.h>
+#include <linux/export.h>
 #include <xen/page.h>
 
 bool xen_biovec_phys_mergeable(const struct bio_vec *vec1,
-- 
1.7.9.rc0.23.g7e521

-- 
Cheers,
Stephen Rothwell                    sfr@canb.auug.org.au

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             reply	other threads:[~2012-01-18 23:31 UTC|newest]

Thread overview: 60+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-01-18 23:31 Stephen Rothwell [this message]
2012-01-19  8:21 ` linux-next: build failure after merge of the origin tree Jens Axboe
2012-01-19  8:23   ` Jens Axboe
  -- strict thread matches above, loose matches on Subject: below --
2023-06-30  2:59 Stephen Rothwell
2023-06-30  3:43 ` Linus Torvalds
2021-09-19 23:42 Stephen Rothwell
2021-09-14  0:08 Stephen Rothwell
2021-09-14  0:19 ` Linus Torvalds
2021-09-14  0:24   ` Linus Torvalds
2021-09-14  0:58     ` Stephen Rothwell
2021-09-14  1:29       ` Linus Torvalds
2021-09-14  1:37         ` Linus Torvalds
2021-09-14  2:03           ` Linus Torvalds
2021-09-14  2:08         ` Stephen Rothwell
2021-09-14  2:12           ` Linus Torvalds
2021-09-14  2:50             ` Michael Ellerman
2021-09-14 12:21             ` Michael Ellerman
2021-09-14  2:39           ` Stephen Rothwell
2021-09-07 23:07 Stephen Rothwell
2021-09-07 23:09 ` Stephen Rothwell
2021-09-07 23:17   ` Marco Elver
2021-09-07 23:38     ` Miguel Ojeda
2020-07-30 22:58 Stephen Rothwell
2020-07-30 23:15 ` Stephen Rothwell
2020-07-29 23:08 Stephen Rothwell
2020-07-29 23:43 ` Linus Torvalds
2020-07-30  0:09   ` Linus Torvalds
2020-07-30  2:12     ` Linus Torvalds
2020-07-30  2:30       ` Willy Tarreau
2020-07-30  3:17   ` Kees Cook
2020-07-30  3:22     ` Willy Tarreau
2020-07-30  6:14       ` Willy Tarreau
2020-07-30  9:59         ` Marc Zyngier
2020-07-30 10:09           ` Catalin Marinas
2020-07-30 15:00             ` Will Deacon
2020-07-30 17:49         ` Kees Cook
2020-07-30 18:24     ` Linus Torvalds
2020-07-30 18:47       ` Kees Cook
2020-06-04 22:37 Stephen Rothwell
2020-06-05  0:04 ` Josh Poimboeuf
2020-06-05  9:48   ` Jessica Yu
2020-04-20 10:23 Stephen Rothwell
2020-01-31  4:12 Stephen Rothwell
2020-01-31  4:17 ` Randy Dunlap
2020-01-31  9:39   ` Daniel Lezcano
2012-10-09 23:21 Stephen Rothwell
2012-10-09 23:45 ` Andrew Morton
2012-10-09 23:52   ` Yasuaki Ishimatsu
2012-10-10  3:12     ` Stephen Rothwell
2012-10-10  0:07   ` Stephen Rothwell
2012-06-04  2:57 Stephen Rothwell
2012-06-04  7:39 ` Paul Mundt
2011-11-06 23:12 Stephen Rothwell
2011-11-07  1:52 ` David Miller
2011-11-07  2:47   ` Stephen Rothwell
2011-11-07  3:36     ` David Miller
2011-11-07  5:29       ` Kirsher, Jeffrey T
2011-11-07 16:46         ` Rose, Gregory V
2011-11-07 17:46           ` Rose, Gregory V
2011-07-25  1:16 Stephen Rothwell

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