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mm: convert copy_user_huge_page() to copy_user_large_folio()

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Replace copy_user_huge_page() with copy_user_large_folio(). 
copy_user_large_folio() does the same as copy_user_huge_page(), but takes
in folios instead of pages.  Remove pages_per_huge_page from
copy_user_large_folio(), because we can get that from folio_nr_pages(dst).

Convert copy_user_gigantic_page() to take in folios.

Link: https://lkml.kernel.org/r/20230410133932.32288-6-zhangpeng362@huawei.com
Signed-off-by: ZhangPeng <zhangpeng362@huawei.com>
Cc: Kefeng Wang <wangkefeng.wang@huawei.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Nanyong Sun <sunnanyong@huawei.com>
Cc: Sidhartha Kumar <sidhartha.kumar@oracle.com>
Cc: Vishal Moola (Oracle) <vishal.moola@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
ZhangPeng
2023-04-10 21:39:31 +08:00
committed by Andrew Morton
parent 0169fd518a
commit c0e8150e14
3 changed files with 22 additions and 24 deletions
Download Patch File Download Diff File Expand all files Collapse all files

28
mm/memory.c
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@@ -5815,21 +5815,21 @@ void clear_huge_page(struct page *page,
process_huge_page(addr_hint, pages_per_huge_page, clear_subpage, page);
}
static void copy_user_gigantic_page(struct page *dst, struct page *src,
unsigned long addr,
struct vm_area_struct *vma,
unsigned int pages_per_huge_page)
static void copy_user_gigantic_page(struct folio *dst, struct folio *src,
unsigned long addr,
struct vm_area_struct *vma,
unsigned int pages_per_huge_page)
{
int i;
struct page *dst_base = dst;
struct page *src_base = src;
struct page *dst_page;
struct page *src_page;
for (i = 0; i < pages_per_huge_page; i++) {
dst = nth_page(dst_base, i);
src = nth_page(src_base, i);
dst_page = folio_page(dst, i);
src_page = folio_page(src, i);
cond_resched();
copy_user_highpage(dst, src, addr + i*PAGE_SIZE, vma);
copy_user_highpage(dst_page, src_page, addr + i*PAGE_SIZE, vma);
}
}
@@ -5847,15 +5847,15 @@ static void copy_subpage(unsigned long addr, int idx, void *arg)
addr, copy_arg->vma);
}
void copy_user_huge_page(struct page *dst, struct page *src,
unsigned long addr_hint, struct vm_area_struct *vma,
unsigned int pages_per_huge_page)
void copy_user_large_folio(struct folio *dst, struct folio *src,
unsigned long addr_hint, struct vm_area_struct *vma)
{
unsigned int pages_per_huge_page = folio_nr_pages(dst);
unsigned long addr = addr_hint &
~(((unsigned long)pages_per_huge_page << PAGE_SHIFT) - 1);
struct copy_subpage_arg arg = {
.dst = dst,
.src = src,
.dst = &dst->page,
.src = &src->page,
.vma = vma,
};