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Subject[PATCH 1/2] srcu: Prevent sdp->srcu_gp_seq_needed_exp counter wrap
Date
Signed-off-by: Ildar Ismagilov <devix84@gmail.com>
---
kernel/rcu/srcutree.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/kernel/rcu/srcutree.c b/kernel/rcu/srcutree.c
index 1798d1aa60fa..c54617280245 100644
--- a/kernel/rcu/srcutree.c
+++ b/kernel/rcu/srcutree.c
@@ -552,6 +552,9 @@ static void srcu_gp_end(struct srcu_struct *sp)
if (ULONG_CMP_GE(gpseq,
sdp->srcu_gp_seq_needed + 100))
sdp->srcu_gp_seq_needed = gpseq;
+ if (ULONG_CMP_GE(gpseq,
+ sdp->srcu_gp_seq_needed_exp + 100))
+ sdp->srcu_gp_seq_needed_exp = gpseq;
raw_spin_unlock_irqrestore_rcu_node(sdp, flags);
}
}
--
2.11.0
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