[PATCH v2] locking/mutex: Remove repeated declaration

* [PATCH v2] locking/mutex: Remove repeated declaration
@ 2021-03-24  5:40 Shaokun Zhang
  2021-03-24  7:22 ` [tip: locking/core] " tip-bot2 for Shaokun Zhang
                   ` (2 more replies)
  0 siblings, 3 replies; 4+ messages in thread
From: Shaokun Zhang @ 2021-03-24  5:40 UTC (permalink / raw)
  To: linux-kernel
  Cc: Shaokun Zhang, Peter Zijlstra, Ingo Molnar, Will Deacon,
	Waiman Long, Boqun Feng

Commit 0cd39f4600ed ("locking/seqlock, headers: Untangle the spaghetti monster")
introduces 'struct ww_acquire_ctx' again, remove the repeated declaration and move
the pre-declarations to the top.

Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Will Deacon <will@kernel.org>
Cc: Waiman Long <longman@redhat.com>
Cc: Boqun Feng <boqun.feng@gmail.com>
Acked-by: Waiman Long <longman@redhat.com>
Signed-off-by: Shaokun Zhang <zhangshaokun@hisilicon.com>
---
 include/linux/mutex.h | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/include/linux/mutex.h b/include/linux/mutex.h
index 0cd631a19727..e7a126796937 100644
--- a/include/linux/mutex.h
+++ b/include/linux/mutex.h
@@ -20,6 +20,7 @@
 #include <linux/osq_lock.h>
 #include <linux/debug_locks.h>
 
+struct ww_class;
 struct ww_acquire_ctx;
 
 /*
@@ -65,9 +66,6 @@ struct mutex {
 #endif
 };
 
-struct ww_class;
-struct ww_acquire_ctx;
-
 struct ww_mutex {
 	struct mutex base;
 	struct ww_acquire_ctx *ctx;
-- 
2.7.4


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