Vincent Chen aaaaba5750 nds32: Disable local irq before calling cpu_dcache_wb_page in copy_user_highpage ...

In order to ensure that all data in source page has been written back
to memory before copy_page, the local irq shall be disabled before
calling cpu_dcache_wb_page(). In addition, removing unneeded page
invalidation for 'to' page.

Signed-off-by: Vincent Chen <vincentc@andestech.com>
Reviewed-by: Greentime Hu <greentime@andestech.com>
Signed-off-by: Greentime Hu <greentime@andestech.com>

2018-05-23 13:26:22 +08:00

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