diff options
| author | Peng Zhang <zhangpeng.00@bytedance.com> | 2023-10-27 06:38:37 +0300 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2023-12-11 03:51:31 +0300 |
| commit | b2472efe4316b2687c153919c1513a098bd82c17 (patch) | |
| tree | 294a25397bf9258c4452558a01b8665d5b80ac25 /tools/include | |
| parent | 4f2267b58a22d972be98edef8e6b3c7a67c9fb91 (diff) | |
| download | linux-b2472efe4316b2687c153919c1513a098bd82c17.tar.xz | |
maple_tree: introduce {mtree,mas}_lock_nested()
In some cases, nested locks may be needed, so {mtree,mas}_lock_nested is
introduced. For example, when duplicating maple tree, we need to hold the
locks of two trees, in which case nested locks are needed.
At the same time, add the definition of spin_lock_nested() in tools for
testing.
Link: https://lkml.kernel.org/r/20231027033845.90608-3-zhangpeng.00@bytedance.com
Signed-off-by: Peng Zhang <zhangpeng.00@bytedance.com>
Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Cc: Christian Brauner <brauner@kernel.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Mateusz Guzik <mjguzik@gmail.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Mike Christie <michael.christie@oracle.com>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Suren Baghdasaryan <surenb@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'tools/include')
| -rw-r--r-- | tools/include/linux/spinlock.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/include/linux/spinlock.h b/tools/include/linux/spinlock.h index 622266b197d0..a6cdf25b6b9d 100644 --- a/tools/include/linux/spinlock.h +++ b/tools/include/linux/spinlock.h @@ -11,6 +11,7 @@ #define spin_lock_init(x) pthread_mutex_init(x, NULL) #define spin_lock(x) pthread_mutex_lock(x) +#define spin_lock_nested(x, subclass) pthread_mutex_lock(x) #define spin_unlock(x) pthread_mutex_unlock(x) #define spin_lock_bh(x) pthread_mutex_lock(x) #define spin_unlock_bh(x) pthread_mutex_unlock(x) |