mm: rcu-protected get_mm_exe_file()

[cascardo/linux.git] / fs / file.c

diff --git a/fs/file.c b/fs/file.c
index ee738ea..93c5f89 100644 (file)
--- a/fs/file.c
+++ b/fs/file.c
@@ -638,8 +638,7 @@ static struct file *__fget(unsigned int fd, fmode_t mask)
        file = fcheck_files(files, fd);
        if (file) {
                /* File object ref couldn't be taken */
-               if ((file->f_mode & mask) ||
-                   !atomic_long_inc_not_zero(&file->f_count))
+               if ((file->f_mode & mask) || !get_file_rcu(file))
                        file = NULL;
        }
        rcu_read_unlock();