diff --git a/[refs] b/[refs]
index 883cd91568a8..9071809ca1c4 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 3e5190380ebef77f2b015c9e7a4ca225a3d75021
+refs/heads/master: aecdcedaab49ca40620dc7dd70f67ee7269a66c9
diff --git a/trunk/fs/sysfs/dir.c b/trunk/fs/sysfs/dir.c
index 079122695675..e9fddcc59447 100644
--- a/trunk/fs/sysfs/dir.c
+++ b/trunk/fs/sysfs/dir.c
@@ -15,6 +15,7 @@
 
 DECLARE_RWSEM(sysfs_rename_sem);
 spinlock_t sysfs_lock = SPIN_LOCK_UNLOCKED;
+spinlock_t kobj_sysfs_assoc_lock = SPIN_LOCK_UNLOCKED;
 
 static spinlock_t sysfs_ino_lock = SPIN_LOCK_UNLOCKED;
 static DEFINE_IDA(sysfs_ino_ida);
@@ -426,8 +427,13 @@ static void __sysfs_remove_dir(struct dentry *dentry)
 
 void sysfs_remove_dir(struct kobject * kobj)
 {
-	__sysfs_remove_dir(kobj->dentry);
+	struct dentry *d = kobj->dentry;
+
+	spin_lock(&kobj_sysfs_assoc_lock);
 	kobj->dentry = NULL;
+	spin_unlock(&kobj_sysfs_assoc_lock);
+
+	__sysfs_remove_dir(d);
 }
 
 int sysfs_rename_dir(struct kobject * kobj, struct dentry *new_parent,
diff --git a/trunk/fs/sysfs/sysfs.h b/trunk/fs/sysfs/sysfs.h
index 39ab0481379c..718e2e123fae 100644
--- a/trunk/fs/sysfs/sysfs.h
+++ b/trunk/fs/sysfs/sysfs.h
@@ -62,6 +62,7 @@ extern void sysfs_drop_dentry(struct sysfs_dirent *sd, struct dentry *parent);
 extern int sysfs_setattr(struct dentry *dentry, struct iattr *iattr);
 
 extern spinlock_t sysfs_lock;
+extern spinlock_t kobj_sysfs_assoc_lock;
 extern struct rw_semaphore sysfs_rename_sem;
 extern struct super_block * sysfs_sb;
 extern const struct file_operations sysfs_dir_operations;