diff options
| author | Matthew Wilcox (Oracle) <[email protected]> | 2020-08-14 17:30:43 -0700 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2020-08-14 19:56:56 -0700 |
| commit | ee6c400f5c05459b8c5f2884a176a1287ce2f68f (patch) | |
| tree | 1c6b77eeb0209995bf012dcbe90bcd1ef76a1fcc | |
| parent | 2be1d71841b7ecfb01ce4c59f6e1d082c3c18a8a (diff) | |
mm: introduce offset_in_thp
Mirroring offset_in_page(), this gives you the offset within this
particular page, no matter what size page it is. It optimises down to
offset_in_page() if CONFIG_TRANSPARENT_HUGEPAGE is not set.
Signed-off-by: Matthew Wilcox (Oracle) <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Reviewed-by: David Hildenbrand <[email protected]>
Reviewed-by: William Kucharski <[email protected]>
Reviewed-by: Zi Yan <[email protected]>
Cc: Mike Kravetz <[email protected]>
Cc: "Kirill A. Shutemov" <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Linus Torvalds <[email protected]>
| -rw-r--r-- | include/linux/mm.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h index fd0cd4e93029..2e7ec3ee34cf 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -1594,6 +1594,7 @@ static inline void clear_page_pfmemalloc(struct page *page) extern void pagefault_out_of_memory(void); #define offset_in_page(p) ((unsigned long)(p) & ~PAGE_MASK) +#define offset_in_thp(page, p) ((unsigned long)(p) & (thp_size(page) - 1)) /* * Flags passed to show_mem() and show_free_areas() to suppress output in |