staging: ion: remove order from struct page_info
ION system heap uses an internal data structure, struct page_info, for tracking down the meta information of the pages allocated from the pool. Now that the pool returns compound pages, we don't need to store page order in struct page_info. Signed-off-by: Heesub Shin <heesub.shin@samsung.com> Reviewed-by: Mitchel Humpherys <mitchelh@codeaurora.org> Tested-by: John Stultz <john.stultz@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -54,7 +54,6 @@ struct ion_system_heap {
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struct page_info {
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struct page *page;
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unsigned int order;
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struct list_head list;
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};
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@ -123,7 +122,6 @@ static struct page_info *alloc_largest_available(struct ion_system_heap *heap,
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continue;
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info->page = page;
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info->order = orders[i];
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return info;
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}
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kfree(info);
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@ -160,8 +158,8 @@ static int ion_system_heap_allocate(struct ion_heap *heap,
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if (!info)
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goto free_pages;
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list_add_tail(&info->list, &pages);
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size_remaining -= PAGE_SIZE << info->order;
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max_order = info->order;
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size_remaining -= PAGE_SIZE << compound_order(info->page);
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max_order = compound_order(info->page);
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i++;
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}
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table = kmalloc(sizeof(struct sg_table), GFP_KERNEL);
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@ -174,7 +172,7 @@ static int ion_system_heap_allocate(struct ion_heap *heap,
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sg = table->sgl;
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list_for_each_entry_safe(info, tmp_info, &pages, list) {
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struct page *page = info->page;
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sg_set_page(sg, page, PAGE_SIZE << info->order, 0);
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sg_set_page(sg, page, PAGE_SIZE << compound_order(page), 0);
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sg = sg_next(sg);
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list_del(&info->list);
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kfree(info);
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@ -187,7 +185,8 @@ free_table:
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kfree(table);
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free_pages:
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list_for_each_entry_safe(info, tmp_info, &pages, list) {
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free_buffer_page(sys_heap, buffer, info->page, info->order);
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free_buffer_page(sys_heap, buffer, info->page,
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compound_order(info->page));
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kfree(info);
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}
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return -ENOMEM;
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