diff options
author | Kent Overstreet <kent.overstreet@linux.dev> | 2024-01-16 17:00:02 -0500 |
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committer | Kent Overstreet <kent.overstreet@linux.dev> | 2024-01-16 17:17:23 -0500 |
commit | b5fd066153c40a70a29caa1ea7987723ab687763 (patch) | |
tree | 6d43a8b0a90d549a54c65565ac96c92b3e84b594 /include/linux/page.h | |
parent | 06ff8b55b70fda44d91b31b5511fafd1680a8934 (diff) |
Move c_src dirs back to toplevel
We just wanted c sourcefiles out of the top level, not c source
directories.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Diffstat (limited to 'include/linux/page.h')
-rw-r--r-- | include/linux/page.h | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/include/linux/page.h b/include/linux/page.h new file mode 100644 index 00000000..111e5e68 --- /dev/null +++ b/include/linux/page.h @@ -0,0 +1,38 @@ +#ifndef _LINUX_PAGE_H +#define _LINUX_PAGE_H + +#include <sys/user.h> + +struct page; + +#ifndef PAGE_SIZE + +#define PAGE_SIZE 4096UL +#define PAGE_MASK (~(PAGE_SIZE - 1)) + +#endif + +#ifndef PAGE_SHIFT +#define PAGE_SHIFT 12 +#endif + + +#define virt_to_page(p) \ + ((struct page *) (((unsigned long) (p)) & PAGE_MASK)) +#define offset_in_page(p) ((unsigned long) (p) & ~PAGE_MASK) + +#define page_address(p) ((void *) (p)) + +#define kmap_atomic(page) page_address(page) +#define kunmap_atomic(addr) do {} while (0) + +#define kmap_local_page(page) page_address(page) +#define kunmap_local(addr) do {} while (0) + +#define PageHighMem(page) false + +static const char zero_page[PAGE_SIZE]; + +#define ZERO_PAGE(o) ((struct page *) &zero_page[0]) + +#endif /* _LINUX_PAGE_H */ |