diff options
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/mm.h | 34 |
1 files changed, 21 insertions, 13 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h index 75d1632d347..9c039f84b63 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -70,6 +70,8 @@ extern unsigned int kobjsize(const void *objp); /* * vm_flags in vm_area_struct, see mm_types.h. */ +#define VM_NONE 0x00000000 + #define VM_READ 0x00000001 /* currently active flags */ #define VM_WRITE 0x00000002 #define VM_EXEC 0x00000004 @@ -82,12 +84,6 @@ extern unsigned int kobjsize(const void *objp); #define VM_MAYSHARE 0x00000080 #define VM_GROWSDOWN 0x00000100 /* general info on the segment */ -#if defined(CONFIG_STACK_GROWSUP) || defined(CONFIG_IA64) -#define VM_GROWSUP 0x00000200 -#else -#define VM_GROWSUP 0x00000000 -#define VM_NOHUGEPAGE 0x00000200 /* MADV_NOHUGEPAGE marked this vma */ -#endif #define VM_PFNMAP 0x00000400 /* Page-ranges managed without "struct page", just pure PFN */ #define VM_DENYWRITE 0x00000800 /* ETXTBSY on write attempts.. */ @@ -106,20 +102,32 @@ extern unsigned int kobjsize(const void *objp); #define VM_NORESERVE 0x00200000 /* should the VM suppress accounting */ #define VM_HUGETLB 0x00400000 /* Huge TLB Page VM */ #define VM_NONLINEAR 0x00800000 /* Is non-linear (remap_file_pages) */ -#ifndef CONFIG_TRANSPARENT_HUGEPAGE -#define VM_MAPPED_COPY 0x01000000 /* T if mapped copy of data (nommu mmap) */ -#else -#define VM_HUGEPAGE 0x01000000 /* MADV_HUGEPAGE marked this vma */ -#endif +#define VM_ARCH_1 0x01000000 /* Architecture-specific flag */ #define VM_INSERTPAGE 0x02000000 /* The vma has had "vm_insert_page()" done on it */ #define VM_NODUMP 0x04000000 /* Do not include in the core dump */ #define VM_CAN_NONLINEAR 0x08000000 /* Has ->fault & does nonlinear pages */ #define VM_MIXEDMAP 0x10000000 /* Can contain "struct page" and pure PFN pages */ -#define VM_SAO 0x20000000 /* Strong Access Ordering (powerpc) */ -#define VM_PAT 0x40000000 /* PAT reserves whole VMA at once (x86) */ +#define VM_HUGEPAGE 0x20000000 /* MADV_HUGEPAGE marked this vma */ +#define VM_NOHUGEPAGE 0x40000000 /* MADV_NOHUGEPAGE marked this vma */ #define VM_MERGEABLE 0x80000000 /* KSM may merge identical pages */ +#if defined(CONFIG_X86) +# define VM_PAT VM_ARCH_1 /* PAT reserves whole VMA at once (x86) */ +#elif defined(CONFIG_PPC) +# define VM_SAO VM_ARCH_1 /* Strong Access Ordering (powerpc) */ +#elif defined(CONFIG_PARISC) +# define VM_GROWSUP VM_ARCH_1 +#elif defined(CONFIG_IA64) +# define VM_GROWSUP VM_ARCH_1 +#elif !defined(CONFIG_MMU) +# define VM_MAPPED_COPY VM_ARCH_1 /* T if mapped copy of data (nommu mmap) */ +#endif + +#ifndef VM_GROWSUP +# define VM_GROWSUP VM_NONE +#endif + /* Bits set in the VMA until the stack is in its final location */ #define VM_STACK_INCOMPLETE_SETUP (VM_RAND_READ | VM_SEQ_READ) |