Re: [PATCH -v3 1/7] kexec jump: clean up #ifdef and comments
From: Andrew Morton
Date: Tue Aug 12 2008 - 23:50:55 EST
On Tue, 12 Aug 2008 11:14:21 +0800 Huang Ying <ying.huang@xxxxxxxxx> 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?
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