diff options
| author | Roman Zippel <zippel@linux-m68k.org> | 2002-05-03 00:03:30 -0700 |
|---|---|---|
| committer | Russell King <rmk@arm.linux.org.uk> | 2002-05-03 00:03:30 -0700 |
| commit | 5528f050dc6302b7f3cf66b97c5426f25ecfc6cc (patch) | |
| tree | ec3dedf4b740349f246460fcbb5e2698da1741ae /mm/msync.c | |
| parent | 31efb48daafb03968411eb62e456df22796a8c9e (diff) | |
[PATCH] 2.5.13: remove VALID_PAGE
This patch removes VALID_PAGE(), as the test was always too late for
discontinous memory configuration. It is replaced with pfn_valid()/
virt_addr_valid(), which are used to test the original input value.
Other helper functions:
pte_pfn() - extract the page number from a pte
pfn_to_page()/page_to_pfn() - convert a page number to/from a page struct
Diffstat (limited to 'mm/msync.c')
| -rw-r--r-- | mm/msync.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/mm/msync.c b/mm/msync.c index f292e0d27a51..2a2b31de8957 100644 --- a/mm/msync.c +++ b/mm/msync.c @@ -26,10 +26,14 @@ static int filemap_sync_pte(pte_t *ptep, struct vm_area_struct *vma, pte_t pte = *ptep; if (pte_present(pte) && pte_dirty(pte)) { - struct page *page = pte_page(pte); - if (VALID_PAGE(page) && !PageReserved(page) && ptep_test_and_clear_dirty(ptep)) { - flush_tlb_page(vma, address); - set_page_dirty(page); + struct page *page; + unsigned long pfn = pte_pfn(pte); + if (pfn_valid(pfn)) { + page = pfn_to_page(pfn); + if (!PageReserved(page) && ptep_test_and_clear_dirty(ptep)) { + flush_tlb_page(vma, address); + set_page_dirty(page); + } } } return 0; |