The libata parts here really need to be split out and the proper list
and maintainer need to be Cc'ed.
> diff --git a/drivers/ata/libata-sff.c b/drivers/ata/libata-sff.c
> index 051b6158d1b7..58af734be25d 100644
> --- a/drivers/ata/libata-sff.c
> +++ b/drivers/ata/libata-sff.c
> @@ -715,7 +715,7 @@ static void ata_pio_sector(struct ata_queued_cmd *qc)
>
> DPRINTK("data %s\n", qc->tf.flags & ATA_TFLAG_WRITE ? "write" : "read");
>
> - if (PageHighMem(page)) {
> + if (PageHighMem(page) || xpfo_page_is_unmapped(page)) {
> unsigned long flags;
>
> /* FIXME: use a bounce buffer */
> @@ -860,7 +860,7 @@ static int __atapi_pio_bytes(struct ata_queued_cmd *qc, unsigned int bytes)
>
> DPRINTK("data %s\n", qc->tf.flags & ATA_TFLAG_WRITE ? "write" : "read");
>
> - if (PageHighMem(page)) {
> + if (PageHighMem(page) || xpfo_page_is_unmapped(page)) {
> unsigned long flags;
>
> /* FIXME: use bounce buffer */
> diff --git a/include/linux/highmem.h b/include/linux/highmem.h
This is just piling one nasty hack on top of another. libata should
just use the highmem case unconditionally, as it is the correct thing
to do for all cases.
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