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| author | venkatesh.pallipadi@intel.com <venkatesh.pallipadi@intel.com> | 2008-12-18 11:41:28 -0800 |
|---|---|---|
| committer | H. Peter Anvin <hpa@zytor.com> | 2008-12-18 13:30:15 -0800 |
| commit | e121e418441525b5636321fe03d16f0193ad218e (patch) | |
| tree | d9f54fef9c4f137c2e8327edbf3ba8110dfb968d /include/linux/mm.h | |
| parent | 3c8bb73ace6249bd089b70c941440441940e3365 (diff) | |
| download | blackbird-op-linux-e121e418441525b5636321fe03d16f0193ad218e.tar.gz blackbird-op-linux-e121e418441525b5636321fe03d16f0193ad218e.zip | |
x86: PAT: add follow_pfnmp_pte routine to help tracking pfnmap pages - v3
Impact: New currently unused interface.
Add a generic interface to follow pfn in a pfnmap vma range. This is used by
one of the subsequent x86 PAT related patch to keep track of memory types
for vma regions across vma copy and free.
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'include/linux/mm.h')
| -rw-r--r-- | include/linux/mm.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h index 2be8d9b5e46f..a25024ff9c11 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1223,6 +1223,9 @@ struct page *follow_page(struct vm_area_struct *, unsigned long address, #define FOLL_GET 0x04 /* do get_page on page */ #define FOLL_ANON 0x08 /* give ZERO_PAGE if no pgtable */ +int follow_pfnmap_pte(struct vm_area_struct *vma, + unsigned long address, pte_t *ret_ptep); + typedef int (*pte_fn_t)(pte_t *pte, pgtable_t token, unsigned long addr, void *data); extern int apply_to_page_range(struct mm_struct *mm, unsigned long address, |
