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authorThomas Graf <tgraf@suug.ch>2015-02-05 02:03:33 +0100
committerDavid S. Miller <davem@davemloft.net>2015-02-07 00:18:34 +0100
commit2af4b52988fd4f7ae525fcada29d4db8680033d6 (patch)
tree79e380d3877cc9d72cfcc3122916bac0af4c2056 /lib
parentrhashtable: Use a single bucket lock for sibling buckets (diff)
downloadlinux-2af4b52988fd4f7ae525fcada29d4db8680033d6.tar.xz
linux-2af4b52988fd4f7ae525fcada29d4db8680033d6.zip
rhashtable: Wait for RCU readers after final unzip work
We need to wait for all RCU readers to complete after the last bit of unzipping has been completed. Otherwise the old table is freed up prematurely. Fixes: 7e1e77636e36 ("lib: Resizable, Scalable, Concurrent Hash Table") Signed-off-by: Thomas Graf <tgraf@suug.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'lib')
-rw-r--r--lib/rhashtable.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/lib/rhashtable.c b/lib/rhashtable.c
index cea4244e032b..fd1033d518c6 100644
--- a/lib/rhashtable.c
+++ b/lib/rhashtable.c
@@ -392,6 +392,8 @@ int rhashtable_expand(struct rhashtable *ht)
}
}
+ synchronize_rcu();
+
bucket_table_free(old_tbl);
return 0;
}