diff options
Diffstat (limited to 'include/linux/page-flags.h')
| -rw-r--r-- | include/linux/page-flags.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h index 6d53675c2b54..98ada58f9942 100644 --- a/include/linux/page-flags.h +++ b/include/linux/page-flags.h | |||
| @@ -329,7 +329,9 @@ static inline void set_page_writeback(struct page *page) | |||
| 329 | * System with lots of page flags available. This allows separate | 329 | * System with lots of page flags available. This allows separate |
| 330 | * flags for PageHead() and PageTail() checks of compound pages so that bit | 330 | * flags for PageHead() and PageTail() checks of compound pages so that bit |
| 331 | * tests can be used in performance sensitive paths. PageCompound is | 331 | * tests can be used in performance sensitive paths. PageCompound is |
| 332 | * generally not used in hot code paths. | 332 | * generally not used in hot code paths except arch/powerpc/mm/init_64.c |
| 333 | * and arch/powerpc/kvm/book3s_64_vio_hv.c which use it to detect huge pages | ||
| 334 | * and avoid handling those in real mode. | ||
| 333 | */ | 335 | */ |
| 334 | __PAGEFLAG(Head, head) CLEARPAGEFLAG(Head, head) | 336 | __PAGEFLAG(Head, head) CLEARPAGEFLAG(Head, head) |
| 335 | __PAGEFLAG(Tail, tail) | 337 | __PAGEFLAG(Tail, tail) |