From: "Matthew Wilcox (Oracle)" <willy@infradead.org>
To: Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@redhat.com>, Will Deacon <will@kernel.org>,
Waiman Long <longman@redhat.com>
Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
Chandan Babu R <chandan.babu@oracle.com>,
"Darrick J . Wong" <djwong@kernel.org>,
linux-xfs@vger.kernel.org
Subject: [PATCH 2/5] mm: Use rwsem_is_write_locked in mmap_assert_write_locked
Date: Thu, 7 Sep 2023 18:47:02 +0100 [thread overview]
Message-ID: <20230907174705.2976191-3-willy@infradead.org> (raw)
In-Reply-To: <20230907174705.2976191-1-willy@infradead.org>
This slightly strengthens our checks when lockdep is disabled.
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
---
include/linux/mmap_lock.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/linux/mmap_lock.h b/include/linux/mmap_lock.h
index 8d38dcb6d044..0258b06668e8 100644
--- a/include/linux/mmap_lock.h
+++ b/include/linux/mmap_lock.h
@@ -69,7 +69,7 @@ static inline void mmap_assert_locked(struct mm_struct *mm)
static inline void mmap_assert_write_locked(struct mm_struct *mm)
{
lockdep_assert_held_write(&mm->mmap_lock);
- VM_BUG_ON_MM(!rwsem_is_locked(&mm->mmap_lock), mm);
+ VM_BUG_ON_MM(!rwsem_is_write_locked(&mm->mmap_lock), mm);
}
#ifdef CONFIG_PER_VMA_LOCK
--
2.40.1
next prev parent reply other threads:[~2023-09-07 17:47 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-09-07 17:47 [PATCH 0/5] Remove the XFS mrlock Matthew Wilcox (Oracle)
2023-09-07 17:47 ` [PATCH 1/5] locking: Add rwsem_is_write_locked() Matthew Wilcox (Oracle)
2023-09-07 18:05 ` Waiman Long
2023-09-07 19:33 ` Matthew Wilcox
2023-09-07 21:06 ` Waiman Long
2023-09-07 23:47 ` Waiman Long
2023-09-08 0:44 ` Dave Chinner
2023-09-07 19:08 ` Peter Zijlstra
2023-09-07 19:20 ` Matthew Wilcox
2023-09-07 19:38 ` Peter Zijlstra
2023-09-07 23:00 ` Dave Chinner
2023-09-08 10:44 ` Peter Zijlstra
2023-09-10 22:56 ` Dave Chinner
2023-09-10 23:17 ` Matthew Wilcox
2023-09-11 0:55 ` Dave Chinner
2023-09-11 2:15 ` Waiman Long
2023-09-11 22:29 ` Dave Chinner
2023-09-12 9:03 ` Peter Zijlstra
2023-09-12 12:28 ` Matthew Wilcox
2023-09-12 13:52 ` Peter Zijlstra
2023-09-12 13:58 ` Matthew Wilcox
2023-09-12 14:23 ` Peter Zijlstra
2023-09-12 15:27 ` Darrick J. Wong
2023-09-13 8:59 ` Peter Zijlstra
2023-09-12 14:02 ` Peter Zijlstra
2023-09-12 23:16 ` Dave Chinner
2023-09-08 0:01 ` Matthew Wilcox
2023-09-07 17:47 ` Matthew Wilcox (Oracle) [this message]
2023-09-07 17:47 ` [PATCH 3/5] xfs: Use rwsem_is_write_locked() Matthew Wilcox (Oracle)
2023-09-08 9:09 ` Christoph Hellwig
2023-09-08 9:10 ` Christoph Hellwig
2023-09-07 17:47 ` [PATCH 4/5] xfs: Remove mrlock wrapper Matthew Wilcox (Oracle)
2023-09-07 17:47 ` [PATCH 5/5] xfs: Stop using lockdep to assert that locks are held Matthew Wilcox (Oracle)
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