new helper: daemonize_descriptors()

descriptor-related parts of daemonize, done right.  As the
result we simplify the locking rules for ->files - we
hold task_lock in *all* cases when we modify ->files.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 1 insertions, 3 deletions

diff --git a/kernel/exit.c b/kernel/exit.c
index 20dfc7617c2e..095113321318 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -457,9 +457,7 @@ void daemonize(const char *name, ...)
         /* Become as one with the init task */
 
         daemonize_fs_struct();
-        exit_files(current);
-        current->files = init_task.files;
-        atomic_inc(&current->files->count);
+        daemonize_descriptors();
 
         reparent_to_kthreadd();
 }