Hi Andrew,
Today's linux-next merge of the akpm-current tree got a conflict in:
arch/arc/mm/cache.c
between commit:
336e2136e135 ("ARC: mm: preps ahead of HIGHMEM support")
from the arc tree and commit:
c386768017da ("mm: differentiate page_mapped() from page_mapcount() for compound pages")
from the akpm-current tree.
I fixed it up (see below) and can carry the fix as necessary (no action
is required).
--
Cheers,
Stephen Rothwell sfr@xxxxxxxxxxxxxxxx
diff --cc arch/arc/mm/cache.c
index ff7ff6cbb811,875ac2e918c5..000000000000
--- a/arch/arc/mm/cache.c
+++ b/arch/arc/mm/cache.c
@@@ -617,10 -582,10 +617,10 @@@ void flush_dcache_page(struct page *pag
*/
if (!mapping_mapped(mapping)) {
clear_bit(PG_dc_clean, &page->flags);
- } else if (page_mapped(page)) {
+ } else if (page_mapcount(page)) {
/* kernel reading from page with U-mapping */
- unsigned long paddr = (unsigned long)page_address(page);
+ phys_addr_t paddr = (unsigned long)page_address(page);
unsigned long vaddr = page->index << PAGE_CACHE_SHIFT;
if (addr_not_cache_congruent(paddr, vaddr))
@@@ -853,12 -818,9 +853,12 @@@ void copy_user_highpage(struct page *to
*
* Note that while @u_vaddr refers to DST page's userspace vaddr, it is
* equally valid for SRC page as well
+ *
+ * For !VIPT cache, all of this gets compiled out as
+ * addr_not_cache_congruent() is 0
*/
- if (page_mapped(from) && addr_not_cache_congruent(kfrom, u_vaddr)) {
+ if (page_mapcount(from) && addr_not_cache_congruent(kfrom, u_vaddr)) {
- __flush_dcache_page(kfrom, u_vaddr);
+ __flush_dcache_page((unsigned long)kfrom, u_vaddr);
clean_src_k_mappings = 1;
}
--
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