Christoph Hellwig wrote:
On Sun, Jun 04, 2006 at 12:41:20PM +0900, Tejun Heo wrote:
local_irq_save(flags);
buf = kmap_atomic(sg->page, KM_IRQ0) + sg->offset;
memcpy(buf, tw_dev->generic_buffer_virt[request_id], sg->length);
+ flush_kernel_dcache_page(kmap_atomic_to_page(buf - sg->offset));
kunmap_atomic(buf - sg->offset, KM_IRQ0);
local_irq_restore(flags);
all these should switch to scsi_kmap_atomic_sg which should do the
flush_kernel_dcache_page call for you.
This is not specific to scsi or block. This is a common problem for all
kmap users. As I wrote in the other mail, I think this should be
mandated at the kmap/kunmap() interface.
--
tejun
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