#include <linux/syscalls.h>
#include <linux/mempolicy.h>
#include <linux/hugetlb.h>
+#include <linux/sched.h>
/*
* Any behaviour which results in changes to the vma->vm_flags needs to
struct vm_area_struct * vma, *prev;
int unmapped_error = 0;
int error = -EINVAL;
+ int write;
size_t len;
- if (madvise_need_mmap_write(behavior))
+ write = madvise_need_mmap_write(behavior);
+ if (write)
down_write(¤t->mm->mmap_sem);
else
down_read(¤t->mm->mmap_sem);
vma = find_vma(current->mm, start);
}
out:
- if (madvise_need_mmap_write(behavior))
+ if (write)
up_write(¤t->mm->mmap_sem);
else
up_read(¤t->mm->mmap_sem);