4.9-stable review patch. If anyone has any objections, please let me know.
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[ Upstream commit 62461ac2e5b6520b6d65fc6d7d7b4b8df4b848d8 ]
The percpu member of this structure is declared as: struct ... ** __percpu member; So its type is: __percpu pointer to pointer to struct ...
But looking at how it's used, its type should be: pointer to __percpu pointer to struct ... and it should thus be declared as: struct ... * __percpu *member;
So fix the placement of '__percpu' in the definition of this structures.
This silents a few Sparse's warnings like: warning: incorrect type in initializer (different address spaces) expected void const [noderef] asn:3 *__vpp_verify got struct sched_domain **
Link: http://lkml.kernel.org/r/20190118144902.79065-1-luc.vanoostenryck@gmail.com Fixes: 017c59c042d01 ("relay: Use per CPU constructs for the relay channel buffer pointers") Signed-off-by: Luc Van Oostenryck luc.vanoostenryck@gmail.com Cc: Jens Axboe axboe@suse.de Cc: Thomas Gleixner tglx@linutronix.de Signed-off-by: Andrew Morton akpm@linux-foundation.org Signed-off-by: Linus Torvalds torvalds@linux-foundation.org Signed-off-by: Sasha Levin sashal@kernel.org --- include/linux/relay.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/linux/relay.h b/include/linux/relay.h index 68c1448e56bb..2560f8706408 100644 --- a/include/linux/relay.h +++ b/include/linux/relay.h @@ -65,7 +65,7 @@ struct rchan struct kref kref; /* channel refcount */ void *private_data; /* for user-defined data */ size_t last_toobig; /* tried to log event > subbuf size */ - struct rchan_buf ** __percpu buf; /* per-cpu channel buffers */ + struct rchan_buf * __percpu *buf; /* per-cpu channel buffers */ int is_global; /* One global buffer ? */ struct list_head list; /* for channel list */ struct dentry *parent; /* parent dentry passed to open */