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SubjectRe: [PATCH] swapin flush cache bug
David S. Miller wrote:
> The I/O completion must flush the cache, not the VM subsystem.
> You must implement cache flushing at the DMA tranfer end point
> to fix the problem you are describing.

Thanks a lot. I understand now.

Aha, that's the reason why we have __flush_dcache_range() in ide_insw
for Sparc64 implementation, isn't it? I'll follow it for SuperH.

I'll close the entry for MM bugzilla, it's not MM bug.
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