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-rw-r--r--fs/ext4/mballoc.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index 4a45efabb20..2fcaf286f1d 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -2909,7 +2909,11 @@ int __init init_ext4_mballoc(void)
void exit_ext4_mballoc(void)
{
- /* XXX: synchronize_rcu(); */
+ /*
+ * Wait for completion of call_rcu()'s on ext4_pspace_cachep
+ * before destroying the slab cache.
+ */
+ rcu_barrier();
kmem_cache_destroy(ext4_pspace_cachep);
kmem_cache_destroy(ext4_ac_cachep);
kmem_cache_destroy(ext4_free_ext_cachep);