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Date: Thu, 12 Jul 2012 10:14:35 +0800 From: shan kang <kangshan0910@...il.com> To: linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org Subject: ARM: why smp_mb() is not needed in the "__mutex_fastpath_lock" and "__mutex_fastpath_unlock" functions Hello, I wonder why smp_mb() is not needed in the "__mutex_fastpath_lock" and "__mutex_fastpath_unlock" functions which are located in the "arch/arm/include/asm/mutex.h"? I think "dmb" instruction is necessary there. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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