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signal: Use lockdep_assert_held instead of assert_spin_locked
The distinction is that assert_spin_locked() checks if the lock is held *by*anyone* whereas lockdep_assert_held() asserts the current context holds the lock. Also, the check goes away if you build without lockdep. Suggested-by: Peter Zijlstra <peterz@infradead.org> Link: https://lkml.kernel.org/r/Ympr/+PX4XgT/UKU@hirez.programming.kicks-ass.net Tested-by: Kees Cook <keescook@chromium.org> Reviewed-by: Oleg Nesterov <oleg@redhat.com> Link: https://lkml.kernel.org/r/20220505182645.497868-6-ebiederm@xmission.com Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
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