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| author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2015-10-12 16:56:42 -0700 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2015-12-04 12:34:33 -0800 |
| commit | 2f073848c3cc8aff2655ab7c46d8c0de90cf4e50 (patch) | |
| tree | a30a9e1b6f0edd5d1837c214cbf26c762fdb0a54 /kernel/rcu | |
| parent | 7d86dccf28a3ae2f790f399fc82d4c82521fd078 (diff) | |
| download | linux-0-day-2f073848c3cc8aff2655ab7c46d8c0de90cf4e50.tar.gz linux-0-day-2f073848c3cc8aff2655ab7c46d8c0de90cf4e50.tar.xz | |
list: Use WRITE_ONCE() when initializing list_head structures
Code that does lockless emptiness testing of non-RCU lists is relying
on INIT_LIST_HEAD() to write the list head's ->next pointer atomically,
particularly when INIT_LIST_HEAD() is invoked from list_del_init().
This commit therefore adds WRITE_ONCE() to this function's pointer stores
that could affect the head's ->next pointer.
Reported-by: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'kernel/rcu')
0 files changed, 0 insertions, 0 deletions