From: Jan Blunck <jblunck@xxxxxxx>
Break early when somebody tries to rehash an already hashed dentry.
Otherwise this leads to interesting corruptions in the dcache hash table
later on.
Signed-off-by: Jan Blunck <jblunck@xxxxxxx>
Signed-off-by: Valerie Aurora <vaurora@xxxxxxxxxx>
---
fs/dcache.c | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/fs/dcache.c b/fs/dcache.c
index 9e5cd3c..38bf982 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -1550,6 +1550,7 @@ void d_rehash(struct dentry * entry)
{
spin_lock(&dcache_lock);
spin_lock(&entry->d_lock);
+ BUG_ON(!d_unhashed(entry));
_d_rehash(entry);
spin_unlock(&entry->d_lock);
spin_unlock(&dcache_lock);
--
1.6.3.3
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