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-rw-r--r--mm/memory.c31
1 files changed, 31 insertions, 0 deletions
diff --git a/mm/memory.c b/mm/memory.c
index 673ebbf499c..d902d0e25ed 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -2754,3 +2754,34 @@ int access_process_vm(struct task_struct *tsk, unsigned long addr, void *buf, in
return buf - old_buf;
}
+
+/*
+ * Print the name of a VMA.
+ */
+void print_vma_addr(char *prefix, unsigned long ip)
+{
+ struct mm_struct *mm = current->mm;
+ struct vm_area_struct *vma;
+
+ down_read(&mm->mmap_sem);
+ vma = find_vma(mm, ip);
+ if (vma && vma->vm_file) {
+ struct file *f = vma->vm_file;
+ char *buf = (char *)__get_free_page(GFP_KERNEL);
+ if (buf) {
+ char *p, *s;
+
+ p = d_path(f->f_dentry, f->f_vfsmnt, buf, PAGE_SIZE);
+ if (IS_ERR(p))
+ p = "?";
+ s = strrchr(p, '/');
+ if (s)
+ p = s+1;
+ printk("%s%s[%lx+%lx]", prefix, p,
+ vma->vm_start,
+ vma->vm_end - vma->vm_start);
+ free_page((unsigned long)buf);
+ }
+ }
+ up_read(&current->mm->mmap_sem);
+}