diff options
Diffstat (limited to 'include/linux/mm_types.h')
| -rw-r--r-- | include/linux/mm_types.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h index 8d37e26a1007..0038ac7466fd 100644 --- a/include/linux/mm_types.h +++ b/include/linux/mm_types.h @@ -226,6 +226,24 @@ struct page_frag { #endif }; +#define PAGE_FRAG_CACHE_MAX_SIZE __ALIGN_MASK(32768, ~PAGE_MASK) +#define PAGE_FRAG_CACHE_MAX_ORDER get_order(PAGE_FRAG_CACHE_MAX_SIZE) + +struct page_frag_cache { + void * va; +#if (PAGE_SIZE < PAGE_FRAG_CACHE_MAX_SIZE) + __u16 offset; + __u16 size; +#else + __u32 offset; +#endif + /* we maintain a pagecount bias, so that we dont dirty cache line + * containing page->_count every time we allocate a fragment. + */ + unsigned int pagecnt_bias; + bool pfmemalloc; +}; + typedef unsigned long __nocast vm_flags_t; /* |