iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

mm/rmap: Use a folio in page_mkclean_one()

Browse Source 
folio_mkclean() already passes down a head page, so convert it
back to a folio.

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Matthew Wilcox (Oracle) 2022-01-20 18:20:07 -05:00
parent 4aed23a2f8
commit e83c09a24e
1 changed files with 5 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
mm/rmap.c
View File

@ -930,13 +930,14 @@ int page_referenced(struct page *page,
static bool page_mkclean_one(struct page *page, struct vm_area_struct *vma,
unsigned long address, void *arg)
{
DEFINE_PAGE_VMA_WALK(pvmw, page, vma, address, PVMW_SYNC);
struct folio *folio = page_folio(page);
DEFINE_FOLIO_VMA_WALK(pvmw, folio, vma, address, PVMW_SYNC);
struct mmu_notifier_range range;
int *cleaned = arg;
/*
* We have to assume the worse case ie pmd for invalidation. Note that
* the page can not be free from this function.
* the folio can not be freed from this function.
*/
mmu_notifier_range_init(&range, MMU_NOTIFY_PROTECTION_PAGE,
0, vma, vma->vm_mm, address,
@ -968,14 +969,14 @@ static bool page_mkclean_one(struct page *page, struct vm_area_struct *vma,
if (!pmd_dirty(*pmd) && !pmd_write(*pmd))
continue;
flush_cache_page(vma, address, page_to_pfn(page));
flush_cache_page(vma, address, folio_pfn(folio));
entry = pmdp_invalidate(vma, address, pmd);
entry = pmd_wrprotect(entry);
entry = pmd_mkclean(entry);
set_pmd_at(vma->vm_mm, address, pmd, entry);
ret = 1;
#else
/* unexpected pmd-mapped page? */
/* unexpected pmd-mapped folio? */
WARN_ON_ONCE(1);
#endif
}