diff options
author | Jeff Garzik <jeff@garzik.org> | 2006-09-26 13:13:19 -0400 |
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committer | Jeff Garzik <jeff@garzik.org> | 2006-09-26 13:13:19 -0400 |
commit | c226951b93f7cd7c3a10b17384535b617bd43fd0 (patch) | |
tree | 07b8796a5c99fbbf587b8d0dbcbc173cfe5e381e /include/linux/rmap.h | |
parent | b0df3bd1e553e901ec7297267611a5db88240b38 (diff) | |
parent | e8216dee838c09776680a6f1a2e54d81f3cdfa14 (diff) |
Merge branch 'master' into upstream
Diffstat (limited to 'include/linux/rmap.h')
-rw-r--r-- | include/linux/rmap.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/include/linux/rmap.h b/include/linux/rmap.h index bf97b090001..db2c1df4fef 100644 --- a/include/linux/rmap.h +++ b/include/linux/rmap.h @@ -103,6 +103,14 @@ pte_t *page_check_address(struct page *, struct mm_struct *, */ unsigned long page_address_in_vma(struct page *, struct vm_area_struct *); +/* + * Cleans the PTEs of shared mappings. + * (and since clean PTEs should also be readonly, write protects them too) + * + * returns the number of cleaned PTEs. + */ +int page_mkclean(struct page *); + #else /* !CONFIG_MMU */ #define anon_vma_init() do {} while (0) @@ -112,6 +120,12 @@ unsigned long page_address_in_vma(struct page *, struct vm_area_struct *); #define page_referenced(page,l) TestClearPageReferenced(page) #define try_to_unmap(page, refs) SWAP_FAIL +static inline int page_mkclean(struct page *page) +{ + return 0; +} + + #endif /* CONFIG_MMU */ /* |