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| author | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2011-05-23 12:24:39 +0400 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2011-05-23 12:24:31 +0400 |
| commit | 2d42552d1c1659b014851cf449ad2fe458509128 (patch) | |
| tree | b9ef22867ce52e23b5249a7ad38637eec40363b8 /include/asm-generic/pgtable.h | |
| parent | c26001d4e9133fe45e47eee18cfd826219e71fb9 (diff) | |
| download | linux-2d42552d1c1659b014851cf449ad2fe458509128.tar.xz | |
[S390] merge page_test_dirty and page_clear_dirty
The page_clear_dirty primitive always sets the default storage key
which resets the access control bits and the fetch protection bit.
That will surprise a KVM guest that sets non-zero access control
bits or the fetch protection bit. Merge page_test_dirty and
page_clear_dirty back to a single function and only clear the
dirty bit from the storage key.
In addition move the function page_test_and_clear_dirty and
page_test_and_clear_young to page.h where they belong. This
requires to change the parameter from a struct page * to a page
frame number.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'include/asm-generic/pgtable.h')
| -rw-r--r-- | include/asm-generic/pgtable.h | 12 |
1 files changed, 4 insertions, 8 deletions
diff --git a/include/asm-generic/pgtable.h b/include/asm-generic/pgtable.h index b4bfe338ea0e..e9b8e5926bef 100644 --- a/include/asm-generic/pgtable.h +++ b/include/asm-generic/pgtable.h @@ -184,22 +184,18 @@ static inline int pmd_same(pmd_t pmd_a, pmd_t pmd_b) #endif /* CONFIG_TRANSPARENT_HUGEPAGE */ #endif -#ifndef __HAVE_ARCH_PAGE_TEST_DIRTY -#define page_test_dirty(page) (0) +#ifndef __HAVE_ARCH_PAGE_TEST_AND_CLEAR_DIRTY +#define page_test_and_clear_dirty(pfn, mapped) (0) #endif -#ifndef __HAVE_ARCH_PAGE_CLEAR_DIRTY -#define page_clear_dirty(page, mapped) do { } while (0) -#endif - -#ifndef __HAVE_ARCH_PAGE_TEST_DIRTY +#ifndef __HAVE_ARCH_PAGE_TEST_AND_CLEAR_DIRTY #define pte_maybe_dirty(pte) pte_dirty(pte) #else #define pte_maybe_dirty(pte) (1) #endif #ifndef __HAVE_ARCH_PAGE_TEST_AND_CLEAR_YOUNG -#define page_test_and_clear_young(page) (0) +#define page_test_and_clear_young(pfn) (0) #endif #ifndef __HAVE_ARCH_PGD_OFFSET_GATE |