linux-kernel - Re: [PATCH] [ARM] force dcache flush if dcache

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Message-Id: <20091012.031628.98420072.davem@davemloft.net>
Date:	Mon, 12 Oct 2009 03:16:28 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	linux@....linux.org.uk
Cc:	ngupta@...are.org, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] [ARM] force dcache flush if dcache_dirty bit set

From: Russell King - ARM Linux <linux@....linux.org.uk>
Date: Mon, 12 Oct 2009 11:00:23 +0100

> The problem which has been identified is that when flush_dcache_page() is
> called, there is a mapping, and so the page is marked for lazy flushing.
> However, by the time update_mmu_cache() gets called, the mapping has gone
> and so update_mmu_cache() does nothing.

Now I understand, thanks.

Ok, I'll remove the mapping check from the sparc64 flush_dcache()
function, seems the right thing to do.

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