VM: add "vm_mmap()" helper function
[~shefty/rdma-dev.git] / fs / binfmt_elf_fdpic.c
index 9bd5612..d390a0f 100644 (file)
@@ -390,21 +390,17 @@ static int load_elf_fdpic_binary(struct linux_binprm *bprm,
            (executable_stack == EXSTACK_DEFAULT && VM_STACK_FLAGS & VM_EXEC))
                stack_prot |= PROT_EXEC;
 
-       down_write(&current->mm->mmap_sem);
-       current->mm->start_brk = do_mmap(NULL, 0, stack_size, stack_prot,
+       current->mm->start_brk = vm_mmap(NULL, 0, stack_size, stack_prot,
                                         MAP_PRIVATE | MAP_ANONYMOUS |
                                         MAP_UNINITIALIZED | MAP_GROWSDOWN,
                                         0);
 
        if (IS_ERR_VALUE(current->mm->start_brk)) {
-               up_write(&current->mm->mmap_sem);
                retval = current->mm->start_brk;
                current->mm->start_brk = 0;
                goto error_kill;
        }
 
-       up_write(&current->mm->mmap_sem);
-
        current->mm->brk = current->mm->start_brk;
        current->mm->context.end_brk = current->mm->start_brk;
        current->mm->context.end_brk +=
@@ -955,10 +951,8 @@ static int elf_fdpic_map_file_constdisp_on_uclinux(
        if (params->flags & ELF_FDPIC_FLAG_EXECUTABLE)
                mflags |= MAP_EXECUTABLE;
 
-       down_write(&mm->mmap_sem);
-       maddr = do_mmap(NULL, load_addr, top - base,
+       maddr = vm_mmap(NULL, load_addr, top - base,
                        PROT_READ | PROT_WRITE | PROT_EXEC, mflags, 0);
-       up_write(&mm->mmap_sem);
        if (IS_ERR_VALUE(maddr))
                return (int) maddr;
 
@@ -1096,10 +1090,8 @@ static int elf_fdpic_map_file_by_direct_mmap(struct elf_fdpic_params *params,
 
                /* create the mapping */
                disp = phdr->p_vaddr & ~PAGE_MASK;
-               down_write(&mm->mmap_sem);
-               maddr = do_mmap(file, maddr, phdr->p_memsz + disp, prot, flags,
+               maddr = vm_mmap(file, maddr, phdr->p_memsz + disp, prot, flags,
                                phdr->p_offset - disp);
-               up_write(&mm->mmap_sem);
 
                kdebug("mmap[%d] <file> sz=%lx pr=%x fl=%x of=%lx --> %08lx",
                       loop, phdr->p_memsz + disp, prot, flags,
@@ -1143,10 +1135,8 @@ static int elf_fdpic_map_file_by_direct_mmap(struct elf_fdpic_params *params,
                        unsigned long xmaddr;
 
                        flags |= MAP_FIXED | MAP_ANONYMOUS;
-                       down_write(&mm->mmap_sem);
-                       xmaddr = do_mmap(NULL, xaddr, excess - excess1,
+                       xmaddr = vm_mmap(NULL, xaddr, excess - excess1,
                                         prot, flags, 0);
-                       up_write(&mm->mmap_sem);
 
                        kdebug("mmap[%d] <anon>"
                               " ad=%lx sz=%lx pr=%x fl=%x of=0 --> %08lx",