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bcache: fix crash in bcache_btree_node_alloc_fail tracepoint

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'b' was NULL.

Change-Id: Icac0fd04afa2d23f213d96d51afd53374e6dd0c0
This commit is contained in:
Slava Pestov 2014-05-23 11:18:35 -07:00 committed by Kent Overstreet
parent 60ae81eee8
commit 913dc33fb2
2 changed files with 4 additions and 4 deletions
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2
drivers/md/bcache/btree.c
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@ -1096,7 +1096,7 @@ err_free:
err:
mutex_unlock(&c->bucket_lock);
trace_bcache_btree_node_alloc_fail(b);
trace_bcache_btree_node_alloc_fail(c);
return b;
}

6
include/trace/events/bcache.h
View File

@ -261,9 +261,9 @@ DEFINE_EVENT(btree_node, bcache_btree_node_alloc,
TP_ARGS(b)
);
DEFINE_EVENT(btree_node, bcache_btree_node_alloc_fail,
TP_PROTO(struct btree *b),
TP_ARGS(b)
DEFINE_EVENT(cache_set, bcache_btree_node_alloc_fail,
TP_PROTO(struct cache_set *c),
TP_ARGS(c)
);
DEFINE_EVENT(btree_node, bcache_btree_node_free,