diff options
Diffstat (limited to 'old/xenolinux-2.4.16-sparse/arch/xeno/mm/get_unmapped_area.c')
| -rw-r--r-- | old/xenolinux-2.4.16-sparse/arch/xeno/mm/get_unmapped_area.c | 137 |
1 files changed, 0 insertions, 137 deletions
diff --git a/old/xenolinux-2.4.16-sparse/arch/xeno/mm/get_unmapped_area.c b/old/xenolinux-2.4.16-sparse/arch/xeno/mm/get_unmapped_area.c deleted file mode 100644 index a7b4447589..0000000000 --- a/old/xenolinux-2.4.16-sparse/arch/xeno/mm/get_unmapped_area.c +++ /dev/null @@ -1,137 +0,0 @@ - -#include <linux/slab.h> -#include <linux/shm.h> -#include <linux/mman.h> -#include <linux/pagemap.h> -#include <linux/swap.h> -#include <linux/swapctl.h> -#include <linux/smp_lock.h> -#include <linux/init.h> -#include <linux/file.h> -#include <linux/fs.h> -#include <linux/personality.h> - -#include <asm/uaccess.h> -#include <asm/pgalloc.h> - -/* -static int direct_mapped(unsigned long addr) -{ - direct_mmap_node_t * node; - struct list_head * curr; - struct list_head * direct_list = ¤t->mm->context.direct_list; - - curr = direct_list->next; - while(curr != direct_list){ - node = list_entry(curr, direct_mmap_node_t, list); - if(node->addr == addr) - break; - curr = curr->next; - } - - if(curr == direct_list) - return 0; - - return 1; -} -*/ -/* -unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr, unsigned long len, unsigned long pgoff, unsigned long flags) -{ - struct vm_area_struct *vma; - - if (len > TASK_SIZE) - return -ENOMEM; - - if (addr) { - addr = PAGE_ALIGN(addr); - vma = find_vma(current->mm, addr); - if (TASK_SIZE - len >= addr && - (!vma || addr + len <= vma->vm_start)) - return addr; - } - addr = PAGE_ALIGN(TASK_UNMAPPED_BASE); - - for (vma = find_vma(current->mm, addr); ; vma = vma->vm_next) { - if (TASK_SIZE - len < addr) - return -ENOMEM; - - if ((!vma || addr + len <= vma->vm_start) && !direct_mapped(addr)) - return addr; - - addr = vma->vm_end; - } -} -*/ -struct list_head *find_direct(struct list_head *list, unsigned long addr) -{ - struct list_head * curr; - struct list_head * direct_list = ¤t->mm->context.direct_list; - direct_mmap_node_t * node; - - for ( curr = direct_list->next; curr != direct_list; curr = curr->next ) - { - node = list_entry(curr, direct_mmap_node_t, list); - if ( node->vm_start >= addr ) break; - } - - return curr; -} - -unsigned long arch_get_unmapped_area(struct file *filp, unsigned long -addr, unsigned long len, unsigned long pgoff, unsigned long flags) -{ - struct vm_area_struct *vma; - direct_mmap_node_t * node; - struct list_head * curr; - struct list_head * direct_list = ¤t->mm->context.direct_list; - - if (len > TASK_SIZE) - return -ENOMEM; - - if ( addr ) - { - addr = PAGE_ALIGN(addr); - vma = find_vma(current->mm, addr); - curr = find_direct(direct_list, addr); - node = list_entry(curr, direct_mmap_node_t, list); - if ( (TASK_SIZE - len >= addr) && - (!vma || addr + len <= vma->vm_start) && - ((curr == direct_list) || addr + len <= node->vm_start) ) - return addr; - } - - addr = PAGE_ALIGN(TASK_UNMAPPED_BASE); - - - /* Find first VMA and direct_map nodes with vm_start > addr */ - vma = find_vma(current->mm, addr); - curr = find_direct(direct_list, addr); - node = list_entry(curr, direct_mmap_node_t, list); - - for ( ; ; ) - { - if ( TASK_SIZE - len < addr ) return -ENOMEM; - - if ( vma && ((curr == direct_list) || (vma->vm_start < node->vm_start))) - { - /* Do we fit before VMA node? */ - if ( addr + len <= vma->vm_start ) return addr; - addr = vma->vm_end; - vma = vma->vm_next; - } - else if ( curr != direct_list ) - { - /* Do we fit before direct_map node? */ - if ( addr + len <= node->vm_start) return addr; - addr = node->vm_end; - curr = curr->next; - node = list_entry(curr, direct_mmap_node_t, list); - } - else - { - /* !vma && curr == direct_list */ - return addr; - } - } -} |