提交 d88cfffa 编写于 作者: A Arnd Bergmann 提交者: Paul Mackerras

[PATCH] spufs: fix local store page refcounting

With the new rules for reserved pages, the spufs now
needs working page reference counting.

I should probably look into converting to vm_insert_page,
but for now this patch makes spufs work again.
Signed-off-by: NArnd Bergmann <arndb@de.ibm.com>
Signed-off-by: NPaul Mackerras <paulus@samba.org>
上级 39c73c33
......@@ -114,7 +114,7 @@ static void __init cell_spuprop_present(struct device_node *spe,
for (pfn = start_pfn; pfn < end_pfn; pfn++) {
struct page *page = pfn_to_page(pfn);
set_page_links(page, ZONE_DMA, node_id, pfn);
set_page_count(page, 0);
set_page_count(page, 1);
reset_page_mapcount(page);
SetPageReserved(page);
INIT_LIST_HEAD(&page->lru);
......
......@@ -23,6 +23,7 @@
#include <linux/fs.h>
#include <linux/ioctl.h>
#include <linux/module.h>
#include <linux/pagemap.h>
#include <linux/poll.h>
#include <asm/io.h>
......@@ -106,6 +107,7 @@ spufs_mem_mmap_nopage(struct vm_area_struct *vma,
if (type)
*type = VM_FAULT_MINOR;
page_cache_get(page);
return page;
}
......@@ -120,7 +122,6 @@ spufs_mem_mmap(struct file *file, struct vm_area_struct *vma)
return -EINVAL;
/* FIXME: */
vma->vm_flags |= VM_RESERVED;
vma->vm_page_prot = __pgprot(pgprot_val(vma->vm_page_prot)
| _PAGE_NO_CACHE);
......
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