diff options
Diffstat (limited to 'include/linux/mm_types.h')
| -rw-r--r-- | include/linux/mm_types.h | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h index 199a03aab8dc..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; /* @@ -364,7 +382,9 @@ struct mm_struct { atomic_t mm_users; /* How many users with user space? */ atomic_t mm_count; /* How many references to "struct mm_struct" (users count as 1) */ atomic_long_t nr_ptes; /* PTE page table pages */ +#if CONFIG_PGTABLE_LEVELS > 2 atomic_long_t nr_pmds; /* PMD page table pages */ +#endif int map_count; /* number of VMAs */ spinlock_t page_table_lock; /* Protects page tables and some counters */ @@ -427,7 +447,7 @@ struct mm_struct { #endif /* store ref to file /proc/<pid>/exe symlink points to */ - struct file *exe_file; + struct file __rcu *exe_file; #ifdef CONFIG_MMU_NOTIFIER struct mmu_notifier_mm *mmu_notifier_mm; #endif |