new helper: read_code()

[mirror_ubuntu-artful-kernel.git] / fs / exec.c

diff --git a/fs/exec.c b/fs/exec.c
index a96a4885bbbfa130750caa70b9b3f504ea10b244..77dc9096440fbd8ec7aefe695bcb0d763431e51e 100644 (file)
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -802,6 +802,15 @@ int kernel_read(struct file *file, loff_t offset,
 
 EXPORT_SYMBOL(kernel_read);
 
+ssize_t read_code(struct file *file, unsigned long addr, loff_t pos, size_t len)
+{
+       ssize_t res = file->f_op->read(file, (void __user *)addr, len, &pos);
+       if (res > 0)
+               flush_icache_range(addr, addr + len);
+       return res;
+}
+EXPORT_SYMBOL(read_code);
+
 static int exec_mmap(struct mm_struct *mm)
 {
        struct task_struct *tsk;