diff options
| -rw-r--r-- | fs/dcache.c | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/fs/dcache.c b/fs/dcache.c index 916fd57b9d18..61819fb32e13 100644 --- a/fs/dcache.c +++ b/fs/dcache.c @@ -588,13 +588,9 @@ static void __dentry_kill(struct dentry *dentry) dentry_free(dentry); } -static inline struct dentry *lock_parent(struct dentry *dentry) +static struct dentry *__lock_parent(struct dentry *dentry) { - struct dentry *parent = dentry->d_parent; - if (IS_ROOT(dentry)) - return NULL; - if (likely(spin_trylock(&parent->d_lock))) - return parent; + struct dentry *parent; rcu_read_lock(); spin_unlock(&dentry->d_lock); again: @@ -620,6 +616,16 @@ again: return parent; } +static inline struct dentry *lock_parent(struct dentry *dentry) +{ + struct dentry *parent = dentry->d_parent; + if (IS_ROOT(dentry)) + return NULL; + if (likely(spin_trylock(&parent->d_lock))) + return parent; + return __lock_parent(dentry); +} + /* * Finish off a dentry we've decided to kill. * dentry->d_lock must be held, returns with it unlocked. |