On Tue, 12 Aug 2008 11:14:21 +0800 Huang Ying <ying.huang at intel.com> wrote: > xchg(&kexec_lock, 0); kernel/kexec.c: In function 'kernel_kexec': kernel/kexec.c:1501: warning: value computed is not used Is there any reason why we cannot use the more conventional test_and_set_bit() etc, rather than this peculiarity? Or perhaps spin_trylock?
