diff options
Diffstat (limited to 'arch/sh/mm/mmap.c')
| -rw-r--r-- | arch/sh/mm/mmap.c | 35 |
1 files changed, 28 insertions, 7 deletions
diff --git a/arch/sh/mm/mmap.c b/arch/sh/mm/mmap.c index 6777177807c2..c442734d9b0c 100644 --- a/arch/sh/mm/mmap.c +++ b/arch/sh/mm/mmap.c @@ -9,6 +9,7 @@ */ #include <linux/io.h> #include <linux/mm.h> +#include <linux/sched/mm.h> #include <linux/mman.h> #include <linux/module.h> #include <asm/page.h> @@ -18,6 +19,26 @@ unsigned long shm_align_mask = PAGE_SIZE - 1; /* Sane caches */ EXPORT_SYMBOL(shm_align_mask); #ifdef CONFIG_MMU +static const pgprot_t protection_map[16] = { + [VM_NONE] = PAGE_NONE, + [VM_READ] = PAGE_READONLY, + [VM_WRITE] = PAGE_COPY, + [VM_WRITE | VM_READ] = PAGE_COPY, + [VM_EXEC] = PAGE_EXECREAD, + [VM_EXEC | VM_READ] = PAGE_EXECREAD, + [VM_EXEC | VM_WRITE] = PAGE_COPY, + [VM_EXEC | VM_WRITE | VM_READ] = PAGE_COPY, + [VM_SHARED] = PAGE_NONE, + [VM_SHARED | VM_READ] = PAGE_READONLY, + [VM_SHARED | VM_WRITE] = PAGE_WRITEONLY, + [VM_SHARED | VM_WRITE | VM_READ] = PAGE_SHARED, + [VM_SHARED | VM_EXEC] = PAGE_EXECREAD, + [VM_SHARED | VM_EXEC | VM_READ] = PAGE_EXECREAD, + [VM_SHARED | VM_EXEC | VM_WRITE] = PAGE_RWX, + [VM_SHARED | VM_EXEC | VM_WRITE | VM_READ] = PAGE_RWX +}; +DECLARE_VM_GET_PAGE_PROT + /* * To avoid cache aliases, we map the shared page with same color. */ @@ -31,12 +52,13 @@ static inline unsigned long COLOUR_ALIGN(unsigned long addr, } unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, - unsigned long len, unsigned long pgoff, unsigned long flags) + unsigned long len, unsigned long pgoff, unsigned long flags, + vm_flags_t vm_flags) { struct mm_struct *mm = current->mm; struct vm_area_struct *vma; int do_colour_align; - struct vm_unmapped_area_info info; + struct vm_unmapped_area_info info = {}; if (flags & MAP_FIXED) { /* We do not accept a shared mapping if it would violate @@ -63,11 +85,10 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, vma = find_vma(mm, addr); if (TASK_SIZE - len >= addr && - (!vma || addr + len <= vma->vm_start)) + (!vma || addr + len <= vm_start_gap(vma))) return addr; } - info.flags = 0; info.length = len; info.low_limit = TASK_UNMAPPED_BASE; info.high_limit = TASK_SIZE; @@ -79,13 +100,13 @@ unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsigned long arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0, const unsigned long len, const unsigned long pgoff, - const unsigned long flags) + const unsigned long flags, vm_flags_t vm_flags) { struct vm_area_struct *vma; struct mm_struct *mm = current->mm; unsigned long addr = addr0; int do_colour_align; - struct vm_unmapped_area_info info; + struct vm_unmapped_area_info info = {}; if (flags & MAP_FIXED) { /* We do not accept a shared mapping if it would violate @@ -113,7 +134,7 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0, vma = find_vma(mm, addr); if (TASK_SIZE - len >= addr && - (!vma || addr + len <= vma->vm_start)) + (!vma || addr + len <= vm_start_gap(vma))) return addr; } |