LIST_EMPTY_CAREFUL(9)                       Data Types                      LIST_EMPTY_CAREFUL(9)



NAME
       list_empty_careful - tests whether a list is empty and not being modified

SYNOPSIS
       int list_empty_careful(const struct list_head * head);

ARGUMENTS
       head
           the list to test

DESCRIPTION
       tests whether a list is empty _and_ checks that no other CPU might be in the process of
       modifying either member (next or prev)

NOTE
       using list_empty_careful without synchronization can only be safe if the only activity
       that can happen to the list entry is list_del_init. Eg. it cannot be used if another CPU
       could re-list_add it.

COPYRIGHT
Kernel Hackers Manual 4.8.                 January 2017                     LIST_EMPTY_CAREFUL(9)