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-rw-r--r--fs/dcache.c9
1 files changed, 8 insertions, 1 deletions
diff --git a/fs/dcache.c b/fs/dcache.c
index ea0485861d93..97e81a844a96 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -793,10 +793,17 @@ static inline bool fast_dput(struct dentry *dentry)
* a reference to the dentry and change that, but
* our work is done - we can leave the dentry
* around with a zero refcount.
+ *
+ * Nevertheless, there are two cases that we should kill
+ * the dentry anyway.
+ * 1. free disconnected dentries as soon as their refcount
+ * reached zero.
+ * 2. free dentries if they should not be cached.
*/
smp_rmb();
d_flags = READ_ONCE(dentry->d_flags);
- d_flags &= DCACHE_REFERENCED | DCACHE_LRU_LIST | DCACHE_DISCONNECTED;
+ d_flags &= DCACHE_REFERENCED | DCACHE_LRU_LIST |
+ DCACHE_DISCONNECTED | DCACHE_DONTCACHE;
/* Nothing to do? Dropping the reference was all we needed? */
if (d_flags == (DCACHE_REFERENCED | DCACHE_LRU_LIST) && !d_unhashed(dentry))