rcu: Mark __rcu_access_pointer() as context_unsafe()

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A simple comparison of a pointer returned by rcu_access_pointer() results
in a context-analysis warning for lockless inspection of the RCU-protected
(also known as __rcu-protected) pointer.  This can be suppressed by
placing context_unsafe() calls around calls rcu_access_pointer(),
but this is messy and distracting.  This commit therefore wraps the
underlying __rcu_access_pointer() macro with a call to context_unsafe(),
thereby informing the context-analysis code that rcu_access_pointer()
may safely be invoked outside of an RCU read-side critical section.

Reported-by: Christoph Hellwig <hch@lst.de>
Suggested-by: Marco Elver <elver@google.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Tested-by: Nilay Shroff <nilay@linux.ibm.com>
Reviewed-by: Marco Elver <elver@google.com>

...

This commit is contained in:

Paul E. McKenney 2026-06-28 09:00:01 -07:00

parent 1384ea908e

commit 573d76f7db

1 changed files with 2 additions and 2 deletions

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include/linux/rcupdate.h

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