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-rw-r--r--include/linux/rcupdate_wait.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/rcupdate_wait.h b/include/linux/rcupdate_wait.h
index 699b938358bf..5e0f74f2f8ca 100644
--- a/include/linux/rcupdate_wait.h
+++ b/include/linux/rcupdate_wait.h
@@ -42,6 +42,11 @@ do { \
* call_srcu() function, with this wrapper supplying the pointer to the
* corresponding srcu_struct.
*
+ * Note that call_rcu_hurry() should be used instead of call_rcu()
+ * because in kernels built with CONFIG_RCU_LAZY=y the delay between the
+ * invocation of call_rcu() and that of the corresponding RCU callback
+ * can be multiple seconds.
+ *
* The first argument tells Tiny RCU's _wait_rcu_gp() not to
* bother waiting for RCU. The reason for this is because anywhere
* synchronize_rcu_mult() can be called is automatically already a full