gfs2: fix to detect failure of register_shrinker
register_shrinker can fail after commit 1d3d4437eae1 ("vmscan: per-node
deferred work"), we should detect the failure of it, otherwise we may
fail to register shrinker after gfs2 module was been inited successfully.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
diff --git a/fs/gfs2/glock.c b/fs/gfs2/glock.c
index c8e2e7f..14cbf60 100644
--- a/fs/gfs2/glock.c
+++ b/fs/gfs2/glock.c
@@ -1781,7 +1781,13 @@
return -ENOMEM;
}
- register_shrinker(&glock_shrinker);
+ ret = register_shrinker(&glock_shrinker);
+ if (ret) {
+ destroy_workqueue(gfs2_delete_workqueue);
+ destroy_workqueue(glock_workqueue);
+ rhashtable_destroy(&gl_hash_table);
+ return ret;
+ }
return 0;
}