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| author | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2008-02-21 16:33:19 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2008-02-21 16:33:19 -0800 |
| commit | 20f8d2a49360980f1dc0afe2ea227e3ba887e575 (patch) | |
| tree | d2891d4604d3fd40da7a21650d07f83e73ae8d8e /arch/x86 | |
| parent | e6364cd3a1a3e7c3e9a80bad15698afe6cc7ee75 (diff) | |
| parent | 1f1519ef597ae4628dbd47244f0f68d700231523 (diff) | |
Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6: (26 commits)
PM: Make suspend_device() static
PCI ACPI: Fix comment describing acpi_pci_choose_state
Hibernation: Handle DEBUG_PAGEALLOC on x86
ACPI: fix build warning
ACPI: TSC breaks atkbd suspend
ACPI: remove is_processor_present prototype
acer-wmi: Add DMI match for mail LED on Acer TravelMate 4200 series
ACPI: sparse fix, replace macro with static function
ACPI: thinkpad-acpi: add tablet-mode reporting
ACPI: thinkpad-acpi: minor hotkey_radio_sw fixes
ACPI: thinkpad-acpi: improve thinkpad-acpi input device documentation
ACPI: thinkpad-acpi: issue input events for tablet swivel events
ACPI: thinkpad-acpi: make the video output feature optional
ACPI: thinkpad-acpi: synchronize input device switches
ACPI: thinkpad-acpi: always track input device open/close
ACPI: thinkpad-acpi: trivial fix to documentation
ACPI: thinkpad-acpi: trivial fix to module_desc typo
intel_menlo: extract return values using PTR_ERR
ACPI video: check for error from thermal_cooling_device_register
ACPI thermal: extract return values using PTR_ERR
...
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/mm/pageattr.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/arch/x86/mm/pageattr.c b/arch/x86/mm/pageattr.c index e2a74ea11a5..464d8fc21ce 100644 --- a/arch/x86/mm/pageattr.c +++ b/arch/x86/mm/pageattr.c @@ -899,7 +899,24 @@ void kernel_map_pages(struct page *page, int numpages, int enable) */ cpa_fill_pool(); } -#endif + +#ifdef CONFIG_HIBERNATION + +bool kernel_page_present(struct page *page) +{ + unsigned int level; + pte_t *pte; + + if (PageHighMem(page)) + return false; + + pte = lookup_address((unsigned long)page_address(page), &level); + return (pte_val(*pte) & _PAGE_PRESENT); +} + +#endif /* CONFIG_HIBERNATION */ + +#endif /* CONFIG_DEBUG_PAGEALLOC */ /* * The testcases use internal knowledge of the implementation that shouldn't |