VM: add "vm_brk()" helper function

[GitHub/mt8127/android_kernel_alcatel_ttab.git] / fs / binfmt_aout.c

diff --git a/fs/binfmt_aout.c b/fs/binfmt_aout.c
index 2eb12f13593db771987c9c4e7cd30c16515fcf11..88527492b917ad607c3a8640ddc5379627beb59c 100644 (file)
--- a/fs/binfmt_aout.c
+++ b/fs/binfmt_aout.c
@@ -50,9 +50,7 @@ static int set_brk(unsigned long start, unsigned long end)
        end = PAGE_ALIGN(end);
        if (end > start) {
                unsigned long addr;
-               down_write(&current->mm->mmap_sem);
-               addr = do_brk(start, end - start);
-               up_write(&current->mm->mmap_sem);
+               addr = vm_brk(start, end - start);
                if (BAD_ADDR(addr))
                        return addr;
        }
@@ -280,9 +278,7 @@ static int load_aout_binary(struct linux_binprm * bprm, struct pt_regs * regs)
                pos = 32;
                map_size = ex.a_text+ex.a_data;
 #endif
-               down_write(&current->mm->mmap_sem);
-               error = do_brk(text_addr & PAGE_MASK, map_size);
-               up_write(&current->mm->mmap_sem);
+               error = vm_brk(text_addr & PAGE_MASK, map_size);
                if (error != (text_addr & PAGE_MASK)) {
                        send_sig(SIGKILL, current, 0);
                        return error;
@@ -313,9 +309,7 @@ static int load_aout_binary(struct linux_binprm * bprm, struct pt_regs * regs)
 
                if (!bprm->file->f_op->mmap||((fd_offset & ~PAGE_MASK) != 0)) {
                        loff_t pos = fd_offset;
-                       down_write(&current->mm->mmap_sem);
-                       do_brk(N_TXTADDR(ex), ex.a_text+ex.a_data);
-                       up_write(&current->mm->mmap_sem);
+                       vm_brk(N_TXTADDR(ex), ex.a_text+ex.a_data);
                        bprm->file->f_op->read(bprm->file,
                                        (char __user *)N_TXTADDR(ex),
                                        ex.a_text+ex.a_data, &pos);
@@ -412,9 +406,7 @@ static int load_aout_library(struct file *file)
                               "N_TXTOFF is not page aligned. Please convert library: %s\n",
                               file->f_path.dentry->d_name.name);
                }
-               down_write(&current->mm->mmap_sem);
-               do_brk(start_addr, ex.a_text + ex.a_data + ex.a_bss);
-               up_write(&current->mm->mmap_sem);
+               vm_brk(start_addr, ex.a_text + ex.a_data + ex.a_bss);
                
                file->f_op->read(file, (char __user *)start_addr,
                        ex.a_text + ex.a_data, &pos);
@@ -438,9 +430,7 @@ static int load_aout_library(struct file *file)
        len = PAGE_ALIGN(ex.a_text + ex.a_data);
        bss = ex.a_text + ex.a_data + ex.a_bss;
        if (bss > len) {
-               down_write(&current->mm->mmap_sem);
-               error = do_brk(start_addr + len, bss - len);
-               up_write(&current->mm->mmap_sem);
+               error = vm_brk(start_addr + len, bss - len);
                retval = error;
                if (error != start_addr + len)
                        goto out;