[RFC] arm/mm: add a protection when flushing anonymous pages

Jason Lin kernel.jason at gmail.com
Sun Sep 30 23:08:19 EDT 2012

Dear all:
When I do LTP direct I/O tests, it produced a cache coherence issue
caused by flush_pfn_alias() (arch/arm/mm/flush.c).
I think we should to disable preemption or lock before setting page
table and enable preemption or unlock after flushing pages

Any comments are appreciated.

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