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authorIngo Molnar <mingo@kernel.org>2018-01-03 14:14:18 +0100
committerIngo Molnar <mingo@kernel.org>2018-01-03 14:14:18 +0100
commit475c5ee193fd682c6383b5e418e65e46a477d176 (patch)
tree43f70a77d919e10237edbbbc3ca7ac8076d27410 /security
parent30a7acd573899fd8b8ac39236eff6468b195ac7d (diff)
parent1dfa55e01987288d847220b8c027204871440ed1 (diff)
downloadlinux-475c5ee193fd682c6383b5e418e65e46a477d176.tar.bz2
Merge branch 'for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu
Pull RCU updates from Paul E. McKenney: - Updates to use cond_resched() instead of cond_resched_rcu_qs() where feasible (currently everywhere except in kernel/rcu and in kernel/torture.c). Also a couple of fixes to avoid sending IPIs to offline CPUs. - Updates to simplify RCU's dyntick-idle handling. - Updates to remove almost all uses of smp_read_barrier_depends() and read_barrier_depends(). - Miscellaneous fixes. - Torture-test updates. Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'security')
-rw-r--r--security/keys/keyring.c7
1 files changed, 0 insertions, 7 deletions
diff --git a/security/keys/keyring.c b/security/keys/keyring.c
index d0bccebbd3b5..41bcf57e96f2 100644
--- a/security/keys/keyring.c
+++ b/security/keys/keyring.c
@@ -713,7 +713,6 @@ descend_to_keyring:
* doesn't contain any keyring pointers.
*/
shortcut = assoc_array_ptr_to_shortcut(ptr);
- smp_read_barrier_depends();
if ((shortcut->index_key[0] & ASSOC_ARRAY_FAN_MASK) != 0)
goto not_this_keyring;
@@ -723,8 +722,6 @@ descend_to_keyring:
}
node = assoc_array_ptr_to_node(ptr);
- smp_read_barrier_depends();
-
ptr = node->slots[0];
if (!assoc_array_ptr_is_meta(ptr))
goto begin_node;
@@ -736,7 +733,6 @@ descend_to_node:
kdebug("descend");
if (assoc_array_ptr_is_shortcut(ptr)) {
shortcut = assoc_array_ptr_to_shortcut(ptr);
- smp_read_barrier_depends();
ptr = READ_ONCE(shortcut->next_node);
BUG_ON(!assoc_array_ptr_is_node(ptr));
}
@@ -744,7 +740,6 @@ descend_to_node:
begin_node:
kdebug("begin_node");
- smp_read_barrier_depends();
slot = 0;
ascend_to_node:
/* Go through the slots in a node */
@@ -792,14 +787,12 @@ ascend_to_node:
if (ptr && assoc_array_ptr_is_shortcut(ptr)) {
shortcut = assoc_array_ptr_to_shortcut(ptr);
- smp_read_barrier_depends();
ptr = READ_ONCE(shortcut->back_pointer);
slot = shortcut->parent_slot;
}
if (!ptr)
goto not_this_keyring;
node = assoc_array_ptr_to_node(ptr);
- smp_read_barrier_depends();
slot++;
/* If we've ascended to the root (zero backpointer), we must have just