From: Stephen Rothwell <sfr@canb.auug.org.au>
To: Jason Gunthorpe <jgg@mellanox.com>,
Thomas Gleixner <tglx@linutronix.de>, Ingo Molnar <mingo@elte.hu>,
"H. Peter Anvin" <hpa@zytor.com>,
Peter Zijlstra <peterz@infradead.org>
Cc: Linux Next Mailing List <linux-next@vger.kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Nikolay Borisov <nborisov@suse.com>
Subject: linux-next: build failure after merge of the hmm tree
Date: Mon, 1 Jul 2019 21:08:53 +1000 [thread overview]
Message-ID: <20190701210853.0c72240b@canb.auug.org.au> (raw)
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Hi all,
After merging the hmm tree, today's linux-next build (x86_64 allmodconfig)
failed like this:
mm/hmm.c: In function 'hmm_get_or_create':
mm/hmm.c:50:2: error: implicit declaration of function 'lockdep_assert_held_exclusive'; did you mean 'lockdep_assert_held_once'? [-Werror=implicit-function-declaration]
lockdep_assert_held_exclusive(&mm->mmap_sem);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
lockdep_assert_held_once
Caused by commit
8a9320b7ec5d ("mm/hmm: Simplify hmm_get_or_create and make it reliable")
interacting with commit
9ffbe8ac05db ("locking/lockdep: Rename lockdep_assert_held_exclusive() -> lockdep_assert_held_write()")
from the tip tree.
I have added the following merge fix.
From: Stephen Rothwell <sfr@canb.auug.org.au>
Date: Mon, 1 Jul 2019 21:05:59 +1000
Subject: [PATCH] mm/hmm: fixup for "locking/lockdep: Rename
lockdep_assert_held_exclusive() -> lockdep_assert_held_write()"
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
---
mm/hmm.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/mm/hmm.c b/mm/hmm.c
index c1bdcef403ee..2ddbd589b207 100644
--- a/mm/hmm.c
+++ b/mm/hmm.c
@@ -47,7 +47,7 @@ static struct hmm *hmm_get_or_create(struct mm_struct *mm)
{
struct hmm *hmm;
- lockdep_assert_held_exclusive(&mm->mmap_sem);
+ lockdep_assert_held_write(&mm->mmap_sem);
/* Abuse the page_table_lock to also protect mm->hmm. */
spin_lock(&mm->page_table_lock);
@@ -248,7 +248,7 @@ static const struct mmu_notifier_ops hmm_mmu_notifier_ops = {
*/
int hmm_mirror_register(struct hmm_mirror *mirror, struct mm_struct *mm)
{
- lockdep_assert_held_exclusive(&mm->mmap_sem);
+ lockdep_assert_held_write(&mm->mmap_sem);
/* Sanity check */
if (!mm || !mirror || !mirror->ops)
--
2.20.1
--
Cheers,
Stephen Rothwell
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next reply other threads:[~2019-07-01 11:09 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-01 11:08 Stephen Rothwell [this message]
2019-07-09 0:21 ` linux-next: build failure after merge of the hmm tree Stephen Rothwell
2019-07-09 12:32 ` Jason Gunthorpe
2019-07-01 11:33 Stephen Rothwell
2019-07-01 23:10 ` Jason Gunthorpe
2019-07-03 1:28 ` Alex Deucher
2019-09-02 10:50 Stephen Rothwell
2019-09-02 10:51 ` Jason Gunthorpe
2019-09-02 23:45 ` Stephen Rothwell
2019-09-03 5:31 ` Dan Williams
2019-09-03 5:42 ` Stephen Rothwell
2019-09-03 23:11 ` Dan Williams
2019-11-14 5:34 Stephen Rothwell
2019-11-14 12:58 ` Jason Gunthorpe
2020-10-06 9:35 Stephen Rothwell
2020-10-06 16:41 ` Jason Gunthorpe
2020-10-12 4:19 ` Stephen Rothwell
2020-10-15 21:11 ` Stephen Rothwell
2021-08-23 7:50 Stephen Rothwell
2021-08-23 17:33 ` Jason Gunthorpe
2021-09-01 22:01 ` Stephen Rothwell
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