take descriptor-related part of close() to file.c
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/drivers/staging/android/binder.c b/drivers/staging/android/binder.c
index 9e1a98a..f71d624 100644
--- a/drivers/staging/android/binder.c
+++ b/drivers/staging/android/binder.c
@@ -391,42 +391,16 @@
}
/*
- * copied from __put_unused_fd in open.c
- */
-static void __put_unused_fd(struct files_struct *files, unsigned int fd)
-{
- struct fdtable *fdt = files_fdtable(files);
- __clear_open_fd(fd, fdt);
- if (fd < files->next_fd)
- files->next_fd = fd;
-}
-
-/*
* copied from sys_close
*/
static long task_close_fd(struct binder_proc *proc, unsigned int fd)
{
- struct file *filp;
- struct files_struct *files = proc->files;
- struct fdtable *fdt;
int retval;
- if (files == NULL)
+ if (proc->files == NULL)
return -ESRCH;
- spin_lock(&files->file_lock);
- fdt = files_fdtable(files);
- if (fd >= fdt->max_fds)
- goto out_unlock;
- filp = fdt->fd[fd];
- if (!filp)
- goto out_unlock;
- rcu_assign_pointer(fdt->fd[fd], NULL);
- __clear_close_on_exec(fd, fdt);
- __put_unused_fd(files, fd);
- spin_unlock(&files->file_lock);
- retval = filp_close(filp, files);
-
+ retval = __close_fd(proc->files, fd);
/* can't restart close syscall because file table entry was cleared */
if (unlikely(retval == -ERESTARTSYS ||
retval == -ERESTARTNOINTR ||
@@ -435,10 +409,6 @@
retval = -EINTR;
return retval;
-
-out_unlock:
- spin_unlock(&files->file_lock);
- return -EBADF;
}
static void binder_set_nice(long nice)