| 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¶
| May 2024 | Kernel Hackers Manual 2.6. |